High-temperature and low-temperature alkali liquor heat exchanger

Abstract

The utility model discloses a high and low temperature alkali liquor heat exchanger, which relates to the field of heat exchangers, and comprises a heat exchanger body, a heat preservation pad and a fixing device, the heat preservation pad is used for wrapping the outer surface of the heat exchanger body; the fixing device is used for fixing the heat preservation pad to the outer surface of the heat exchanger body. Wherein a pressing assembly is arranged on the fixing device, the fixing device is used for locking the pressing assembly on the heat exchanger body, the pressing assembly comprises an annular pressing plate and a plurality of elastic pieces, a plurality of mounting holes are formed in the fixing device, and one elastic piece is arranged in each mounting hole. One end of the elastic piece is connected with the end face of the mounting hole, and the other end is connected with the annular pressing plate; the utility model aims to solve the problem that the use of the heat exchanger is influenced due to the fact that the interior of a pipeline is solidified when the heat exchanger in the prior art is used in a cold environment in winter.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a high and low temperature alkaline solution heat exchanger. Background Technology

[0002] An alkali heat exchanger is a device used for heat exchange of alkali solutions, commonly found in chemical, petrochemical, and metallurgical industries. It transfers and utilizes heat by exchanging heat between high-temperature and low-temperature alkali solutions, thereby improving energy efficiency. It's a device that transfers some of the heat from a hot fluid to a cold fluid, also known as a heat exchanger. As a heat transfer device, heat exchangers are also widely used in boiler heating and ventilation systems. With the rapid development of energy-saving technologies, the types of heat exchangers are increasing. In the alkali evaporation process of the chlor-alkali industry, there is a step involving heat exchange between high-temperature and low-temperature alkali solutions. The high-temperature alkali solution has a temperature of 165℃, and plate heat exchangers are generally used in the chlor-alkali industry to complete this heat exchange process.

[0003] Utility model patent application number CN202323163586.7 and publication number CN221505741 U (hereinafter referred to as "Prior Art 1") discloses an alkaline heat exchanger, including a housing, inside which a heat exchange mechanism is fixedly installed. This utility model, by installing a heat exchange mechanism, delivers cold alkaline solution into the housing during use. A baffle plate guides the flow direction of the cold alkaline solution, increasing its velocity and heat exchange efficiency within the tube bundle. Hot alkaline solution is then delivered to the top of the first housing, transported through a delivery pipe from the top of the housing to the second housing, and then through another delivery pipe from the bottom of the housing to the bottom of the first housing. This process allows the hot and cold alkaline solutions to exchange heat, achieving heat transfer and utilization.

[0004] The specification of prior art 1 discloses an alkaline solution heat exchanger. In use, the alkaline solution is transported through a delivery pipe from the top of the casing to the inside of the second body, and then through a delivery pipe from the bottom of the casing to the bottom of the first body, so that hot alkaline solution can exchange heat with cold alkaline solution. However, in actual applications, in cold environments, when exchanging heat with alkaline solution, most heat exchangers are likely to experience pipe solidification, which can cause fluid blockage in the pipes and lead to a series of problems, affecting the normal use of the heat exchanger. Summary of the Invention

[0005] This invention provides a high and low temperature alkaline solution heat exchanger, which aims to solve the problem that the heat exchanger in the prior art will solidify inside the pipes when used in cold winter environments, thus affecting the use of the heat exchanger.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A high and low temperature alkaline solution heat exchanger includes a heat exchanger body, an insulation pad, and a fixing device. The insulation pad is used to cover the outer surface of the heat exchanger body, and the fixing device is used to fix the insulation pad to the outer surface of the heat exchanger body.

[0008] The fixing device is equipped with a clamping assembly, which is used to lock the clamping assembly onto the heat exchanger body. The clamping assembly includes an annular pressure plate and several elastic elements. The fixing device is provided with several mounting holes, and each mounting hole contains one of the elastic elements. One end of the elastic element is connected to the end face of the mounting hole, and the other end is connected to the annular pressure plate.

[0009] Furthermore, the fixing device includes a first locking ring and a second locking ring, which are hinged to each other and locked by a locking assembly. Both the first locking ring and the second locking ring are provided with a plurality of mounting holes.

[0010] Furthermore, both the first and second locking rings are provided with annular grooves that cooperate with the annular pressure plate, and the annular pressure plate is used to slide inside the annular groove.

[0011] Furthermore, the locking assembly includes a first extension plate and a second extension plate, which are respectively disposed on the first locking ring and the second locking ring, and the first extension plate and the second extension plate are used to install a locking rod.

[0012] Furthermore, the locking rod is hinged to the second extension plate, and the locking rod is used to lock the first locking ring and the second locking ring by rotating and cooperating with the first extension plate.

[0013] Furthermore, both the first extension plate and the second extension plate are provided with waist-shaped grooves. One end of the waist-shaped groove is open, and one end of the locking rod is hinged to the inside of the waist-shaped groove on the second extension plate. The other end is used to connect the locking block. The bottom diameter R1 of the locking block is greater than the waist length D1 of the waist-shaped groove.

[0014] Furthermore, the locking lever is hinged to the waist-shaped groove on the second extension plate via a rotating shaft.

[0015] Furthermore, the second locking ring is provided with a hinge recess, and the first locking ring is provided with a hinge protrusion. The hinge protrusion is used to be inserted into the hinge recess and to be hinged with the hinge recess.

[0016] Furthermore, the insulation pad includes a heat insulation layer and a heat insulation layer. The heat insulation layer is used to cover the heat exchanger body, and the heat insulation layer is used to cover the heat insulation layer.

[0017] Furthermore, the first extension plate is inclined, and the opening on the first extension plate is located at a high position and is used to tilt towards the direction of the first locking ring.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model mainly includes a heat exchanger body, an insulation pad, and a fixing device. During actual use, staff discovered that in cold weather, due to low temperatures, some pipes inside the heat exchanger body would solidify inside the pipes when transporting cold alkali, causing blockages. To solve this problem, staff wrapped the insulation pad around the heat exchanger body to insulate its interior. The fixing device then secured the insulation pad to the heat exchanger body. During the locking process, the heat exchanger body and the insulation pad press against an annular pressure plate, with an elastic element providing cushioning. After the fixing device is locked, the reaction force of the elastic element presses against the annular pressure plate, causing the insulation pad to tightly cover the heat exchanger body. Under the effect of the insulation pad, the internal temperature of the heat exchanger body is reduced by external interference, thus solving the problem of solidification and blockage in the pipes inside the heat exchanger body. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram showing the fit between the mounting hole and the elastic element in this utility model.

[0023] Figure 3 This is a front view of the fixing device in this utility model.

[0024] Figure 4 This is a schematic diagram showing the fit between the annular groove and the annular pressure plate in this utility model.

[0025] In the figure, 101-heat exchanger body, 102-insulation pad, 103-elastic element, 104-mounting hole, 105-annular pressure plate, 106-first locking ring, 107-second locking ring, 108-annular groove, 109-first extension plate, 110-second extension plate, 111-locking rod, 112-waist-shaped groove, 113-opening, 114-locking block, 115-rotating shaft, 116-rotating hole, 117-hinge recess, 118-hinge protrusion, 119-insulation layer, 120-insulation layer. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of the present invention.

[0027] Please see Figures 1-4 As shown, this embodiment discloses a high and low temperature alkaline solution heat exchanger, including a heat exchanger body 101, a heat insulation pad 102, and a fixing device. The heat insulation pad 102 is used to cover the outer surface of the heat exchanger body 101; the fixing device is used to fix the heat insulation pad 102 to the outer surface of the heat exchanger body 101.

[0028] The fixing device is equipped with a clamping assembly, which is used to lock the clamping assembly onto the heat exchanger body 101. The clamping assembly includes an annular pressure plate 105 and several elastic elements 103. The fixing device is provided with several mounting holes 104, and each mounting hole 104 is provided with an elastic element 103. One end of the elastic element 103 is connected to the end face of the mounting hole 104, and the other end is connected to the annular pressure plate 105.

[0029] This utility model mainly includes a heat exchanger body 101, an insulation pad 102, and a fixing device. During actual use, staff discovered that in cold weather, due to low temperatures, some pipes inside the heat exchanger body 101 experienced alkali solidification inside the pipes when transporting cold alkali, leading to blockage. To solve this problem, staff wrapped the insulation pad 102 around the heat exchanger body 101 to insulate the interior of the heat exchanger body 101, and used the fixing device to secure the insulation pad 102 to the heat exchanger body. During the locking process of the fixing device, the heat exchanger body 101 and the insulation pad 102 press against the annular pressure plate 105. The elastic element 103 buffers the annular pressure plate 105. After the fixing device is locked, the reaction force of the elastic element 103 presses against the annular pressure plate 105, thereby causing the insulation pad 102 to tightly cover the heat exchanger body 101. Under the action of the insulation pad 102, the internal temperature of the heat exchanger body 101 is reduced by external interference, thereby solving the problem of solidification and blockage of the pipes inside the heat exchanger body 101.

[0030] Please see Figure 2 As shown, as an optional implementation, in this embodiment, the elastic element 103 is a spring, one end of which is fixedly connected to the end face of the mounting hole 104, and the other end is fixedly connected to the annular pressure plate 105.

[0031] It should be noted that in this embodiment, the heat exchanger body 101 is a floating head heat exchanger in the prior art. This embodiment does not involve any improvement to the structure of the floating head heat exchanger, and will not be described in detail here.

[0032] Please see Figures 2-4 As shown, in some embodiments, the fixing device includes a first locking ring 106 and a second locking ring 107, which are hinged to each other and locked by a locking assembly. Both the first locking ring 106 and the second locking ring 107 are provided with a plurality of mounting holes 104.

[0033] In actual use, when installing the fixing device, first hold the second locking ring 107 and place it close to the lower part of the heat exchanger body 101, with the annular pressure plate 105 on the second locking ring 107 in contact with the insulation pad 102. Then rotate the first locking ring 106 until the annular pressure plate 105 on the first locking ring 106 contacts the insulation pad 102 above the heat exchanger body 101. Then, lock the first locking ring 106 and the second locking ring 107 using the locking assembly. The second locking ring 107 is always located below the heat exchanger body 101 and remains fixed. After rotating the first locking ring 106, the springs on the first locking ring 106 and the second locking ring 107 are slowly compressed. The reaction force of the springs acts on the annular pressure plate 105. When the first locking ring 106 and the second locking ring 107 are locked by the locking assembly, the first locking ring 106 and the second locking ring 107 are fixed on the heat exchanger body 101 and the middle insulation pad 102 is pressed tightly against the outer wall of the heat exchanger body 101.

[0034] Please see Figure 4 As shown, in some embodiments, both the first locking ring 106 and the second locking ring 107 are provided with annular grooves 108 that cooperate with the annular pressure plate 105, and the annular pressure plate 105 is used to slide inside the annular groove 108.

[0035] In actual use, the purpose of setting the annular groove 108 is to facilitate the installation of the annular pressure plate 105 and to limit the sliding stroke of the annular pressure plate 105, and the mounting hole 104 is set on the annular end face of the annular groove 108.

[0036] Please see Figures 2-4 As shown, in some embodiments, the locking assembly includes a first extension plate 109 and a second extension plate 110, which are respectively disposed on the first locking ring 106 and the second locking ring 107. The first extension plate 109 and the second extension plate 110 are used to install the locking rod 111.

[0037] In actual use, the purpose of setting the locking lever 111 is to facilitate locking the first locking ring 106 and the second locking ring 107 using the locking lever 111;

[0038] As an optional implementation, in this embodiment, both the first extension plate 109 and the second extension plate 110 are provided with threaded holes. The threaded holes are used to connect screws. After the screws are threadedly engaged with the threaded holes, the first locking ring 106 and the second locking ring 107 are locked.

[0039] During actual use, the staff found that due to the large size of the equipment, it was difficult to turn the bolts. Therefore, an alternative implementation method was provided, which uses the locking rod 111 to lock the first locking ring 106 and the second locking ring 107.

[0040] Please see Figures 2-4 As shown, in some different embodiments, the locking rod 111 is hinged to the second extension plate 110. The locking rod 111 is used to rotate and cooperate with the first extension plate 109 to lock the first locking ring 106 and the second locking ring 107.

[0041] In actual use, when the first locking ring 106 and the second locking ring 107 are engaged, the first extension plate 109 approaches the second extension plate 110. After rotating the locking rod 111, the locking rod 111 is inserted into the second extension plate 110 to lock the first locking ring 106 and the second locking ring 107.

[0042] Please see Figure 2 As shown, in some embodiments, both the first extension plate 109 and the second extension plate 110 are provided with waist-shaped grooves 112. One end of the waist-shaped groove 112 is open 113. One end of the locking rod 111 is hinged to the inside of the waist-shaped groove 112 on the second extension plate 110, and the other end is used to connect to the locking block 114. The bottom diameter R1 of the locking block 114 is greater than the waist length D1 of the waist-shaped groove 112.

[0043] In actual use, when it is necessary to lock the first locking ring 106 and the second locking ring 107, the operator needs to rotate the locking rod 111 inside the waist-shaped groove 112 on the second extension plate 110. Therefore, when the locking rod 111 rotates into the waist-shaped groove 112 on the first locking ring 106, the upper end face of the first extension plate 109 engages with the bottom face of the locking block 114. Since the bottom diameter R1 of the locking block 114 is greater than the waist length D1 of the waist-shaped groove 112, the locking rod 111 is stuck on the first locking ring 106, thereby achieving the locking of the first locking ring 106 and the second locking ring 107.

[0044] Please see Figure 2 As shown, in some embodiments, the locking lever 111 is hinged to the waist-shaped groove 112 on the second extension plate 110 via a rotating shaft 115.

[0045] In actual use, the locking rod 111 is provided with the rotating shaft 115 on both sides, and the second extension plate 110 is provided with a rotating hole 116. The rotating shaft 115 is used to rotate inside the rotating hole 116.

[0046] Please see Figure 4 As shown, in some embodiments, the second locking ring 107 is provided with a hinge recess 117, and the first locking ring 106 is provided with a hinge protrusion 118. The hinge protrusion 118 is used to be inserted into the hinge recess 117 and to be hinged with the hinge recess 117.

[0047] In actual use, when the first locking ring 106 and the second locking ring 107 rotate relative to each other, the hinge protrusion 118 rotates inside the hinge recess 117, thereby realizing the hinge between the first locking ring 106 and the second locking ring 107.

[0048] Please see Figure 1 As shown, in some embodiments, the heat insulation pad 102 includes a heat insulation layer 119 and a heat insulation layer 120. The heat insulation layer 120 is used to cover the heat exchanger body 101, and the heat insulation layer 119 is used to cover the heat insulation layer 120.

[0049] In actual use, the insulation pad 102 has a double-layer structure. The first layer is an insulation layer 120, which is made of insulation material and is used to cover the outer wall of the heat exchanger body 101. The second layer is a heat insulation layer 119, which is made of heat insulation material and can ensure that the temperature inside the insulation layer 120 is minimized. The two layers are fixedly connected to each other, and the first locking ring 106 and the second locking ring 107 are both used to contact the outer wall of the heat insulation layer 119.

[0050] In some embodiments, please refer to Figure 3 As shown, the first extension plate 109 is inclined, and the opening 113 on the first extension plate 109 is located at a high position and is used to tilt towards the first locking ring 106.

[0051] In actual use, the reason for tilting the first extension plate 109 is that when the locking rod 111 is rotated and placed into the waist-shaped groove 112 above the first extension plate 109, since the first extension plate 109 is tilted, the locking rod 111 also tilts after it is in contact with the waist-shaped groove 112. In this way, the locking rod 111 does not need to be fixed by other means. The locking rod 111 rests against the inner wall of the waist-shaped groove 112 under gravity. The locking block 114 can also lock the first locking ring 106 and the second locking ring 107, making the structure of the locking rod 111 simpler and the locking effect better.

[0052] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-low temperature alkaline solution heat exchanger, comprising a heat exchanger body, characterized in that, Also includes: Insulating pad, the insulating pad being used to cover the outer surface of the heat exchanger body; A fixing device for fixing the insulation pad to the outer surface of the heat exchanger body; The fixing device is equipped with a clamping assembly, which is used to lock the clamping assembly onto the heat exchanger body. The clamping assembly includes an annular pressure plate and several elastic elements. The fixing device is provided with several mounting holes, and each mounting hole contains one of the elastic elements. One end of the elastic element is connected to the end face of the mounting hole, and the other end is connected to the annular pressure plate.

2. The high and low temperature alkaline solution heat exchanger according to claim 1, characterized in that: The fixing device includes a first locking ring and a second locking ring, which are hinged to each other and locked by a locking assembly. Both the first locking ring and the second locking ring are provided with a plurality of mounting holes.

3. A high and low temperature alkaline solution heat exchanger according to claim 2, characterized in that: Both the first and second locking rings are provided with annular grooves that cooperate with the annular pressure plate, and the annular pressure plate is used to slide inside the annular groove.

4. A high and low temperature alkaline solution heat exchanger according to claim 2, characterized in that: The locking assembly includes a first extension plate and a second extension plate, which are respectively disposed on the first locking ring and the second locking ring. The first extension plate and the second extension plate are used to install a locking rod.

5. A high and low temperature alkaline solution heat exchanger according to claim 4, characterized in that: The locking rod is hinged to the second extension plate. The locking rod is used to lock the first locking ring and the second locking ring by rotating and cooperating with the first extension plate.

6. A high and low temperature alkaline solution heat exchanger according to claim 5, characterized in that: Both the first and second extension plates are provided with waist-shaped grooves. One end of the waist-shaped groove is open. One end of the locking rod is hinged to the inside of the waist-shaped groove on the second extension plate, and the other end is used to connect to the locking block. The bottom diameter R1 of the locking block is greater than the waist length D1 of the waist-shaped groove.

7. A high and low temperature alkaline solution heat exchanger according to claim 6, characterized in that: The locking lever is hinged to the waist-shaped groove on the second extension plate via a rotating shaft.

8. A high and low temperature alkaline solution heat exchanger according to claim 1, characterized in that: The second locking ring is provided with a hinge recess, and the first locking ring is provided with a hinge protrusion. The hinge protrusion is used to be inserted into the hinge recess and to be hinged with the hinge recess.

9. A high and low temperature alkaline solution heat exchanger according to claim 1, characterized in that: The insulation pad includes a heat insulation layer and a heat insulation layer. The heat insulation layer is used to cover the heat exchanger body, and the heat insulation layer is used to cover the heat insulation layer.

10. A high and low temperature alkaline solution heat exchanger according to claim 4, characterized in that: The first extension plate is inclined, and the opening on the first extension plate is located at a high position and is used to tilt towards the first locking ring.

Images