A heat transfer plate module, a heat exchanger and a reactor

Abstract

The invention discloses a heat transfer plate module, a heat exchanger and a reactor, which relate to the technical field of heat exchange, and solve the problem that the pressure fluctuation of the fluid in the heat exchange process in the plate heat exchange module causes the welding failure between the heat exchange plate and the material pipe. The technical solution to solve the problem is mainly a heat transfer plate module, including a material pipe, a heat exchange component composed of a plurality of heat exchange plates arranged at intervals in the front and rear directions, and a back plate fixed to the left and right sides of the heat exchange component, a heat exchange space is formed between two adjacent heat exchange plates, the material pipe is connected and fixed to the upper and lower sides of the heat exchange plate group, a fluid cavity is arranged in the heat exchange plate, and the fluid cavity is connected with the inside of the material pipe, a pipe mouth guide plate is arranged on the heat exchange component, the pipe mouth guide plate is close to the material pipe and is arranged at intervals from the material pipe in the left and right directions, and a flow channel is formed between the pipe mouth guide plate and the material pipe. The invention is mainly used to avoid welding failure between the heat exchange plate and the material pipe in the heat exchange module.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange, in particular to a heat transfer plate module, a heat exchanger and a reactor. Background Art

[0002] The heat exchanger and the reactor are the same in principle. The heat exchanger is used to provide hot and cold fluids for heat exchange, while the reactor is to provide the heat required in the endothermic reaction process through the medium or to take away the heat released in the exothermic reaction process through the medium to control the reaction in the best reaction state. The medium of both the heat exchanger and the reactor can be gas, solid, liquid or any mixture of the three, and the structure of the heat exchange element itself has the greatest impact on the heat exchange effect. The heat exchange element is built into the shell and used as a heat exchanger or reactor according to different functions. Commonly used ones are shell and tube type or plate type.

[0003] As a heat transfer element placed in a gas-solid reactor, the uneven channel volume will also cause solid particles such as catalysts to not be evenly placed in each channel, causing changes in the air velocity. The catalyst in each channel cannot have the same service life during the entire working cycle, which has a serious impact on the use of the overall catalyst and the reaction process. Therefore, it is of great significance to control the volume of each channel to keep it consistent for the use of equipment. The equivalent diameter of each channel of the heat exchange element used for the heat exchanger or reactor should remain the same. Otherwise, the fluid will cause pressure fluctuations during the flow process, especially when the medium is gas or phase change occurs. The pressure fluctuation will cause fatigue failure of the welded parts, especially in the part where the pipeline and the plate are welded. The reciprocating alternating stress will cause cracks in the welds between the thin plate and the inlet and outlet pipelines. Today, there are many failure cases in China because manufacturers did not pay attention to these structural problems. Summary of the invention

[0004] In order to solve the problem that the pressure fluctuation of the fluid during the heat exchange process in the plate heat exchange module causes the welding failure between the heat exchange plate and the material pipe, the present invention aims to provide a heat transfer plate module to avoid the welding failure between the heat exchange plate and the material pipe in the heat exchange module.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heat transfer plate module, comprising a material pipe, a heat exchange assembly composed of a plurality of heat exchange plates arranged at intervals along the front-to-back direction, and a back plate fixed to the left and right sides of the heat exchange assembly, a heat exchange space is formed between two adjacent heat exchange plates, the material pipe is connected and fixed to the upper and lower sides of the heat exchange plate group, a fluid cavity is provided in the heat exchange plate, the fluid cavity is communicated with the interior of the material pipe, a pipe mouth guide plate is provided on the heat exchange assembly, the pipe mouth guide plate is close to the material pipe and is arranged at intervals from the material pipe in the left-right direction, and a flow channel is formed between the pipe mouth guide plate and the material pipe.

[0006] After adopting the above technical scheme, the present invention has the following advantages: the fluid in the heat exchange space can be divided by the nozzle guide plate, and a flow channel is formed between the nozzle guide plate and the material pipe. The nozzle guide plate prevents the fluid from directly impacting the welding joint between the heat exchange plate and the material pipe, so that the fluid in the flow channel will not have a large violent movement, thereby avoiding the failure of the weld between the heat exchange plate and the material pipe in the heat exchange module due to long-term periodic impact caused by the fluid.

[0007] Furthermore, the pipe orifice guide plate is provided with a plurality of third positioning portions at intervals along the front-to-back direction, and the heat exchange plate is provided with a fourth positioning portion adapted to the third positioning portion, and the fourth positioning portion is connected to the corresponding third positioning portion.

[0008] With the aforementioned technical solution, when installing the heat exchanger plate, it is usually necessary to measure a certain distance between the heat exchanger plates with a measuring tool, and then remove the measuring tool and manually weld the heat exchanger plate and the material pipe. However, this technical solution cooperates with the third positioning part on the pipe mouth guide plate with the fourth positioning part on the heat exchanger plate, so that there is no need for manual measurement and positioning. The heat exchanger plate can be directly inserted into the guide plate to complete the positioning, and the distance is not easy to change. Then the heat exchanger plate and the material pipe are welded, making the installation of the heat exchanger plate more convenient. During the working process of the heat exchanger plate, since the guide plate fixes the heat exchanger plate, in the case of uneven fluid pressure, the vibration of the heat exchanger plate will be transmitted to the guide plate and then weakened, and will not affect the weld between the heat exchanger plate and the material pipe, making the connection between the heat exchanger plate and the material pipe more stable.

[0009] Furthermore, the material pipe includes a feed pipe and a discharge pipe, and the end of the pipe mouth guide plate corresponding to the feed pipe is inclined toward the feed pipe, close to the heat exchange plate; and the end of the pipe mouth guide plate corresponding to the discharge pipe is inclined toward the side away from the discharge pipe, close to the heat exchange plate.

[0010] By adopting the above-mentioned technical scheme, because the movement direction of the fluid in the heat exchange space is opposite to the direction of the fluid in the fluid cavity, the movement direction of the fluid in the heat exchange space is to enter from one side of the discharge pipe, pass through the heat exchange plate, and flow out from one side of the feed pipe, and the end of the pipe mouth guide vane close to the heat exchange plate is inclined toward the side away from the discharge pipe, so that the fluid that is about to hit the weld is discharged outwardly, and the impact force of the fluid is prevented from hitting the weld of the heat exchange plate and the discharge pipe. Similarly, the end of the pipe mouth guide vane close to the heat exchange plate is inclined toward the side close to the feed pipe, so that the fluid that is about to hit the weld is discharged outwardly, and the impact force of the fluid is prevented from hitting the weld of the heat exchange plate and the feed pipe.

[0011] Furthermore, the heat exchange assembly is provided with a distance piece, the distance piece is provided with a plurality of first positioning portions spaced apart along the front-to-back direction, the heat exchange plate is provided with a second positioning portion adapted to the first positioning portion, and the second positioning portion is connected to the corresponding first positioning portion.

[0012] By adopting the above-mentioned technical solution, the first positioning part on the distance piece is connected with the corresponding second positioning part on the heat exchange plate, which plays a role in positioning the distance piece and the heat exchange plate, so that the distance between every two adjacent heat exchange plates is the same; and when the heat transfer plate module is performing heat exchange work, the distance piece fixes the left and right sides of the heat exchange plate, which plays a limited role in enhancing the stability of the heat exchange plate.

[0013] Furthermore, the distance piece includes a positioning plate, and the positioning plate is fixedly mounted on the back plate; or, the distance piece and the back plate are an integrally formed structure.

[0014] In the first technical solution mentioned above, when the positioning plate is fixedly installed on the back plate, the heat exchange plate is directly plugged into the back plate through the positioning plate, which makes the installation of the heat exchange plate and the back plate simpler, and because the types of parts used are small, the structure is more stable, and the fixed connection between the heat exchange plate and the back plate is more stable. In the second technical solution mentioned above, when the distance piece and the positioning part are integrally formed, because the distance piece and the back plate can be prefabricated together during the manufacturing process of the back plate, the processing time can be reduced, and the structure is simpler than the fixed installation of the positioning plate on the back plate, making the heat exchange plate and the back plate more stable, and only the heat exchange plate plugged into the back plate needs to be fixed together by welding or other means.

[0015] Furthermore, there are multiple distance members, and the multiple distance members are arranged at intervals along the up-down direction.

[0016] By adopting the above-mentioned technical solution, when the length of the heat exchange plate in the up-down direction is too long, a plurality of distance pieces are used to separate the heat exchange plate into a plurality of small units in the up-down direction, so that when the heat transfer plate module is working, the vibration range of the heat exchange plate is reduced, so that the vibration of the heat exchange plate will not affect the weld and will not cause the heat exchange plate to have reciprocating alternating stress, further enhancing the stability of the heat exchange plate, extending the life of the weld and the heat exchange plate, and after reducing the vibration, the volume of the heat exchange space will not change greatly, further improving the efficiency of heat exchange in the heat exchange space.

[0017] Furthermore, the distance piece includes a distance assembly, the distance assembly includes a central axis and a plurality of distance tubes sleeved on the central axis, the end of the distance piece is provided with an end fixing piece, the plurality of distance tubes are arranged at axial intervals along the central axis, the heat exchange plate is provided with a through hole for the central axis to pass through, and two adjacent distance tubes clamp the heat exchange plate.

[0018] By adopting the above-mentioned technical solution, when installing the heat exchange plate and the distance tube, the center axis is first passed through the heat exchange plate until it abuts against the end fixing piece, and then the distance tube is put on the center axis. After the center axis passes through the heat exchange plate in turn, the distance tube is put on, and finally the end fixing piece is installed on the end. Therefore, it is connected to the heat exchange plate through several distance tubes, which is simple to operate and low in cost, and no structural changes to the heat exchange plate are required.

[0019] Furthermore, there are multiple distance components, and the multiple distance components are distributed at intervals in the heat exchange plate group.

[0020] By adopting the above-mentioned technical solution, the heat exchange plate is divided into several small units through the connection of several distance tubes and heat exchange plates, so that the vibration range of the heat exchange plate is minimized when the heat exchange plate is working, so that the heat exchange plate has higher strength, and because the vibration amplitude is low, the weld will not fail due to the vibration of the heat exchange plate, thereby extending the life of the weld and the heat exchange plate.

[0021] Furthermore, the heat exchange plate is formed by welding two front and rear thin plates, a plurality of welding parts are distributed on the heat exchange plate, a fluid channel for fluid flow is provided between two adjacent welding parts, and the through hole is provided in the welding part.

[0022] By adopting the above-mentioned technical solution, the through hole is set on the welding part. Firstly, it will not affect the fluid in the fluid cavity, and secondly, it will not affect the sealing of the fluid cavity. In addition, drilling holes on the welding part is simpler than drilling holes on the side wall of the flow cavity, and will not damage the main structure of the heat exchange plate. Therefore, the yield rate is relatively high. In addition, the cost of production and processing can be reduced because the processing is simple. In addition, since the heat exchange plate uses two thin plates, the heat exchange efficiency is higher.

[0023] Furthermore, the welding parts are evenly distributed on the heat exchange plate, the distance between two adjacent welding parts is L1, the distance between any two welding parts adjacent to the heat exchange plate and the heat exchange plate is equal, the distance from the material pipe to the center of any one of the welding parts is L2, and L1 / 2≤L2≤L1.

[0024] By adopting the above-mentioned technical solution, the widest parts of multiple flow cavities are connected to the inside of the material pipe, so that the fluid flow rate in the fluid cavity is more uniform, the heat exchange efficiency of the heat exchange plate is guaranteed, and a large pressure difference is avoided in the heat exchange plate, thereby protecting the safety of the heat exchange plate and the weld, and improving the overall life. It can also make the welding area between the heat exchange plate and the material pipe larger, making the heat exchange plate and the material pipe more firm.

[0025] A heat exchanger comprises a fixing frame and a sealing shell, wherein two surfaces of the sealing shell are fixed to the fixing frame, and the sealing shell is provided with a sealing cavity, a first fluid inlet, a first fluid outlet, a second fluid inlet and a second fluid outlet, and the heat transfer plate module is inside the sealing shell, wherein the first fluid inlet and the first fluid outlet are communicated with the sealing cavity, the sealing cavity is communicated with the heat exchange space, and the second fluid inlet and the second fluid outlet pass through the sealing cavity and are respectively communicated with one of the material pipes.

[0026] By adopting the above-mentioned technical scheme, the heat exchanger using the above-mentioned heat exchange module divides the fluid in the heat exchange space due to the pipe mouth guide plate, and guides the fluid to the flow field away from the weld, so that the flow velocity of the fluid that may have pressure fluctuations is more uniform when entering the fluid channel, and the impact force of the fluid on the welding joint between the heat exchange plate and the material pipe is reduced, and the welding failure between the heat exchange plate and the material pipe in the heat exchange module caused by the alternating stress of the fluid during long-term operation is avoided, thereby extending the service life of the heat exchanger. The heat exchange plate is formed by welding and fixing two thin plates at the front and rear, thereby improving the heat exchange efficiency of the heat exchanger.

[0027] A reactor comprises a fixing frame and a sealing shell, wherein two surfaces of the sealing shell are fixed to the fixing frame, a sealing cavity, a first fluid inlet, a first fluid outlet, a second fluid inlet and a second fluid outlet are arranged on the sealing shell, the heat transfer plate module is arranged in the sealing shell, the first fluid inlet and the first fluid outlet are communicated with the sealing cavity, the sealing cavity is communicated with the heat exchange space, the second fluid inlet and the second fluid outlet pass through the sealing cavity and are respectively communicated with one of the material pipes.

[0028] By adopting the aforementioned technical scheme, a reactor using the above-mentioned heat exchange module divides the fluid in the heat exchange space due to the pipe mouth guide plate, and guides the fluid to the flow field away from the weld, so that the flow velocity of the fluid that may have pressure fluctuations is more uniform when entering the fluid channel, and the impact force of the fluid on the welding joint between the heat exchange plate and the material pipe is reduced, and the welding failure between the heat exchange plate and the material pipe in the heat exchange module caused by the alternating stress of the fluid during long-term operation is avoided, thereby extending the service life of the reactor. The heat exchange plate is formed by welding and fixing two front and rear thin plates, thereby improving the heat exchange efficiency of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] Figure 1 It is a schematic diagram of a heat transfer plate module embodiment 1 of the present invention;

[0031] Figure 2 is a cross-sectional view of heat transfer plate module embodiment 1;

[0032] Figure 3It is an exploded view of heat exchange module embodiment 1;

[0033] Figure 4 This is a partial enlarged view of point A;

[0034] Figure 5 is a schematic diagram of a heat transfer plate module embodiment 2;

[0035] Figure 6 It is a left view of the heat transfer plate module embodiment 2;

[0036] Figure 7 is a schematic diagram of a distance component;

[0037] Figure 8 is a schematic diagram of a heat transfer plate module in which the first positioning portion is a positioning hole;

[0038] Fig. 9 The exploded view of the heat transfer plate module in which the first positioning portion is a positioning hole.

[0039] Explanation of the accompanying drawings: 1. Material pipe; 11. Flow channel; 2. Heat exchange plate; 21. Second positioning portion; 22. Through hole; 23. Welding portion; 24. Fourth positioning portion; 3. Back plate; 4. Heat exchange space; 5. Fluid cavity; 6. Distance piece; 61. First positioning portion; 62. Positioning plate; 7. Sealing shell; 71. Sealing cavity; 73. First fluid inlet; 74. First fluid outlet; 75. Second fluid inlet; 76. Second fluid outlet; 8. Built-in pull rod; 9. Distance assembly; 91. Center axis; 92. Distance pipe; 93. End fixing piece; 10. Pipe orifice guide plate; 101. Third positioning portion. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] The terms "first", "second", etc. (if any) in the specification and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish before a certain technical feature, it does not necessarily indicate that "first" is present. It should be understood that in the present invention, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present invention, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "Containing X, Y and Z", "Containing X, Y, Z" means that X, Y, and Z are all included, "Containing X, Y or Z" means that one of X, Y, and Z is included, and "Containing X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0042] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0043] Embodiment 1:

[0044] like Figures 1 to 9 As shown, a heat transfer plate module comprises a material pipe 1, a heat exchange assembly consisting of a plurality of heat exchange plates 2 spaced apart in the front-to-back direction, and a back plate 3 fixed to the left and right sides of the heat exchange assembly, a heat exchange space 4 is formed between two adjacent heat exchange plates 2, the material pipe 1 is connected and fixed to the upper and lower sides of the heat exchange plate 2 group, a fluid cavity 5 is provided in the heat exchange plate 2, the fluid cavity 5 is communicated with the interior of the material pipe 1, a nozzle guide plate 10 is provided on the heat exchange assembly, the nozzle guide plate 10 is close to the material pipe 1 and spaced apart from the material pipe 1 in the left-right direction, and a flow channel 11 is formed between the nozzle guide plate 10 and the material pipe 1.

[0045] After adopting the above technical scheme, the present invention has the following advantages: the fluid in the heat exchange space 4 can be divided by the nozzle guide plate 10, and a flow channel 11 is formed between the nozzle guide plate 10 and the material pipe 1. The nozzle guide plate 10 prevents the fluid from directly impacting the welding joint between the heat exchange plate 2 and the material pipe 1, thereby preventing the weld between the heat exchange plate 2 and the material pipe 1 in the heat exchange module from failing due to long-term periodic impact caused by the fluid.

[0046] Specifically, the space outside the flow channel 11 is the flow field. Before using the heat exchange module, the fluid is filled in the entire heat exchange space 4, the flow field and the flow channel 11. When heat exchange is required, the fluid in the heat exchange space 4 will circulate to perform heat exchange. However, the fluid entering the heat exchange space 4 will impact the weld between the heat exchange plate 2 and the material pipe 1. Therefore, the nozzle guide plate 10 is used to block the fluid in the flow field outside the flow channel 11, so that the violently moving fluid in the flow field will not directly affect the fluid in the flow channel 11, thereby protecting the weld. Secondly, the forming method of the heat exchange plate 2 is mold forming or fluid forming. Mold forming is to cast the two plates of the heat exchange plate 2 into a mold. Figure 1 The shape is formed by welding the two plates together; fluid forming is to weld two straight thin plates together, seal the outer ventilation holes, and then fill the inside with high-pressure gas to expand the ventilation holes of the thin plates to form a Figure 1 The appearance of the middle heat exchange plate 2.

[0047] Furthermore, the nozzle guide plate 10 is provided with a plurality of third positioning portions 101 spaced apart in the front-to-back direction, and the heat exchange plate 2 is provided with a fourth positioning portion 24 adapted to the third positioning portion 101 , and the fourth positioning portion 24 is connected to the corresponding third positioning portion 101 .

[0048] By adopting the above-mentioned technical scheme, when installing the heat exchange plate 2, it is usually necessary to measure a certain distance between the heat exchange plate 2 with a measuring tool, and then remove the measuring tool, and manually weld the heat exchange plate 2 and the material pipe 1. However, this technical scheme cooperates with the third positioning part 101 on the pipe mouth guide plate 10 and the fourth positioning part 24 on the heat exchange plate 2, so that there is no need for manual measurement and positioning. The heat exchange plate 2 can be directly inserted into the guide plate to complete the positioning, and the distance is not easy to change. Then, the heat exchange plate 2 and the material pipe 1 are welded, making it more convenient to install the heat exchange plate. During the working process of the heat exchange plate, since the guide plate fixes the heat exchange plate, in the case of uneven fluid pressure, the vibration of the heat exchange plate will be transmitted to the guide plate and then weakened, and will not affect the weld between the heat exchange plate and the material pipe 1, making the connection between the heat exchange plate and the material pipe 1 more stable.

[0049] Specifically, the third positioning portion 101 is a positioning notch, and the fourth positioning portion 24 is a positioning block, so that the heat exchange plate 2 body does not need additional processing to adapt to the third positioning portion 101, which plays a role in rapid installation and stable operation of the heat exchange plate 2.

[0050] Furthermore, the material pipe 1 includes a feed pipe and a discharge pipe, and the end of the nozzle guide plate 10 corresponding to the feed pipe, which is close to the heat exchange plate 2, is inclined toward the feed pipe, and the end of the nozzle guide plate 10 corresponding to the discharge pipe, which is close to the heat exchange plate 2, is inclined toward the side away from the discharge pipe.

[0051] By adopting the above-mentioned technical scheme, because the movement direction of the fluid in the heat exchange space 4 is opposite to the direction of the fluid in the fluid cavity 5, the movement direction of the fluid in the heat exchange space 4 enters from one side of the discharge pipe, passes through the heat exchange plate 2, and flows out from one side of the feed pipe, and the end of the pipe mouth guide plate 10 close to the heat exchange plate 2 is inclined toward the side away from the discharge pipe, so that the fluid that is about to hit the weld is discharged outwardly to avoid the impact of the fluid impact on the weld of the heat exchange plate 2 and the discharge pipe. Similarly, the end of the pipe mouth guide plate 10 close to the heat exchange plate 2 is inclined toward the side close to the feed pipe, so that the fluid that is about to hit the weld is discharged outwardly to avoid the impact of the fluid impact on the weld of the heat exchange plate 2 and the feed pipe.

[0052] Specifically, the movement direction of the fluid in the heat exchange space 4 may be the same as the direction of the fluid in the fluid cavity 5. Therefore, the end of the nozzle guide plate 10 corresponding to the feed pipe, which is close to the heat exchange plate 2, is inclined toward the side away from the feed pipe; and the end of the nozzle guide plate 10 corresponding to the discharge pipe, which is close to the heat exchange plate 2, is inclined toward the side close to the discharge pipe, which can protect the safety of the weld under such special working conditions.

[0053] Furthermore, in order to make the heat exchange plate more stable during operation, a distance piece 6 is provided on the heat exchange assembly, and a plurality of first positioning portions 61 are provided on the distance piece 6 at intervals along the front-to-back direction. A second positioning portion 21 adapted to the first positioning portion 61 is provided on the heat exchange plate 2, and the second positioning portion 21 is connected to the corresponding first positioning portion 61.

[0054] By adopting the above-mentioned technical solution, the first positioning portion 61 on the distance piece 6 is connected with the corresponding second positioning portion 21 on the heat exchange plate 2, so that the distance piece 6 and the heat exchange plate 2 are positioned, so that the distance between every two adjacent heat exchange plates 2 is the same; and when the heat transfer plate module is performing heat exchange work, the distance piece 6 fixes the left and right sides of the heat exchange plate 2, which plays a limited role in enhancing the stability of the heat exchange plate 2.

[0055] Furthermore, in order to ensure that the heat exchange plates are easily positioned during installation and to be able to fix the distance between the heat exchange plates during operation, the distance piece 6 includes a positioning plate 62, and the positioning plate 62 is fixedly installed on the back plate 3; or, the distance piece 6 and the back plate 3 are an integrally formed structure.

[0056] By adopting the above-mentioned technical solution, when the positioning plate 62 is fixedly installed on the back plate 3, the heat exchange plate 2 is directly plugged into the back plate 3 through the positioning plate 62, making the installation of the heat exchange plate 2 and the back plate 3 simpler, and because the types of parts used are small, the structure is more stable, and the fixed connection between the heat exchange plate 2 and the back plate 3 is more stable. When the distance piece 6 and the positioning part are integrally formed in the second technical solution, the distance piece 6 and the back plate 3 can be prefabricated together during the manufacturing process of the back plate 3, which can reduce the processing time, and the structure is simpler than the positioning plate 62 fixedly installed on the back plate 3, making the heat exchange plate 2 and the back plate 3 more stable, and only the heat exchange plate 2 plugged into the back plate 3 needs to be fixed together by welding or other means.

[0057] Specifically, the positioning plate 62 is fixedly mounted on the back plate 3 or the distance piece 6 and the positioning portion are integrally formed, the first positioning portion 61 is a positioning protrusion, and the second positioning portion 21 is a positioning groove. Figure 8 and Fig. 9 As shown, the second positioning portion 21 can be set as a positioning hole, and the first positioning portion 61 on the heat exchange plate 2 can be set as a positioning protrusion. The positioning hole and the positioning protrusion cooperate to complete the positioning and fixation between the heat exchange hole and the back plate 3.

[0058] Furthermore, in order to stabilize the working state of the heat exchange plate 2, the number of the distance pieces 6 is multiple, and the multiple distance pieces 6 are spaced apart in the up-and-down direction.

[0059] By adopting the above-mentioned technical solution, when the length of the heat exchange plate 2 in the up-down direction is too long, a plurality of distance pieces 6 are used to divide the heat exchange plate 2 into a plurality of small units in the up-down direction, so that when the heat transfer plate module is working, the vibration range of the heat exchange plate 2 is reduced, so that the vibration of the heat exchange plate 2 will not affect the weld and will not cause the heat exchange plate 2 to have reciprocating alternating stress, further enhancing the stability of the heat exchange plate 2, extending the life of the weld and the heat exchange plate 2, and after reducing the vibration, the volume of the heat exchange space 4 will not change greatly, further improving the efficiency of heat exchange in the heat exchange space 4.

[0060] Embodiment 2:

[0061] like Figures 5 to 7 As shown, when the area of ​​the heat exchange plate 2 is too large, in order to better ensure the working stability of the heat exchange plate, the distance piece 6 includes a distance component 9, and the distance component 9 includes a central axis 91 and a plurality of distance tubes 92 sleeved on the central axis 91. An end fixing piece 93 is provided at the end of the distance piece 6. The plurality of distance tubes 92 are arranged at intervals along the axial direction of the central axis 91. A through hole 22 is provided on the heat exchange plate 2 for the central axis 91 to pass through. Two adjacent distance tubes 92 clamp the heat exchange plate 2.

[0062] By adopting the above-mentioned technical solution, when installing the heat exchange plate 2 and the distance tube 92, the center axis 91 is first passed through the heat exchange plate 2 until it abuts against the end fixing piece 93, and then the distance tube 92 is put on the center axis 91. After the center axis 91 is passed through the heat exchange plate 2 in turn, the distance tube 92 is put on, and finally the end fixing piece 93 is installed on the end. Therefore, it is connected to the heat exchange plate 2 through several distance tubes 92, which is simple to operate and low in cost, and no structural changes to the heat exchange plate 2 are required.

[0063] Furthermore, in order to facilitate installation, the number of the distance components 9 is multiple, and the multiple distance components 9 are distributed at intervals in the heat exchange plate 2 group.

[0064] By adopting the aforementioned technical solution, the heat exchange plate 2 is divided into a plurality of small units through the connection of a plurality of distance tubes 92 and the heat exchange plate 2, so that when the heat exchange plate 2 is working, the vibration range of the heat exchange plate 2 is reduced to a minimum, so that the heat exchange plate 2 has higher strength, and because the amplitude of the vibration is low, the weld will not fail due to the vibration of the heat exchange plate 2, thereby extending the life of the weld and the heat exchange plate 2.

[0065] Furthermore, in order to increase the heat exchange efficiency of the heat exchange plate 2, the heat exchange plate 2 is formed by welding and fixing two front and rear thin plates. A plurality of welding parts 23 are distributed on the heat exchange plate 2, and a fluid channel for fluid flow is provided between two adjacent welding parts 23. The through hole 22 is provided in the welding part 23.

[0066] By adopting the above-mentioned technical solution, the through hole 22 is set on the welding part 23. Firstly, it will not affect the fluid in the fluid cavity 5, and secondly, it will not affect the sealing of the fluid cavity 5. In addition, drilling holes on the welding part 23 is simpler than drilling holes on the side wall of the flow cavity, and will not damage the main structure of the heat exchange plate 2. Therefore, the yield rate is relatively high, and the simple processing can also reduce the production and processing costs.

[0067] Specifically, the welding portion 23 is welded by resistance welding. Considering that the travel distance of the stepping device of the laser welding equipment is limited and multiple laser welding equipment cannot be arranged on one guide rail at the same time, the efficiency of the laser equipment will be limited. At the same time, laser welding is prone to spattering and forming weld nodules on the plate surface that are difficult to remove, which affects the service life of the heat exchange equipment. Resistance welding can provide multi-point synchronous welding, with higher production efficiency and a smooth product surface.

[0068] Furthermore, in order to improve the heat exchange efficiency and fluid circulation efficiency of the heat exchange plate 2, the welding parts 23 are evenly distributed on the heat exchange plate 2, the distance between two adjacent welding parts 23 is L1, the distance between any two welding parts 23 adjacent to the heat exchange plate 2 and the heat exchange plate 2 is equal, and the distance from the material pipe 1 to the center of any one of the welding parts 23 is L2, L1 / 2≤L2≤L1.

[0069] By adopting the above-mentioned technical solution, the widest parts of multiple flow cavities are connected to the inside of the material pipe 1, so that the fluid flow rate in the fluid cavity 5 is more uniform, the heat exchange efficiency of the heat exchange plate 2 is guaranteed, and a large pressure difference is avoided in the heat exchange plate 2, thereby protecting the safety of the heat exchange plate 2 and the weld, and improving the overall life. It can also make the welding area between the heat exchange plate 2 and the material pipe 1 larger, making the heat exchange plate 2 and the material pipe 1 more firm.

[0070] Embodiment 3: A heat exchanger comprises a fixing frame and a sealing shell 7, wherein the sealing shell 7 is fixed to the fixing frame on both sides, and the sealing shell 7 is provided with a sealing cavity 71, a first fluid inlet 73, a first fluid outlet 74, a second fluid inlet 75 and a second fluid outlet 76. The heat transfer plate module in the sealing shell 7, the first fluid inlet 73 and the first fluid outlet 74 are connected to the sealing cavity 71, the sealing cavity 71 is connected to the heat exchange space 4, and the second fluid inlet 75 and the second fluid outlet 76 pass through the sealing cavity 71 and are respectively connected to one of the material pipes 1.

[0071] By adopting the above-mentioned technical scheme, the heat exchanger using the above-mentioned heat exchange module divides the fluid in the heat exchange space 4 due to the pipe mouth guide plate 10, and guides the fluid to the flow field away from the weld, so that the flow velocity of the fluid that may have pressure fluctuations is more uniform when entering the fluid channel, and the impact force of the fluid on the welding joint between the heat exchange plate 2 and the material pipe 1 is reduced, and the alternating stress of the fluid during long-term operation that causes the welding failure between the heat exchange plate 2 and the material pipe 1 in the heat exchange module is avoided, thereby extending the service life of the heat exchanger. The heat exchange plate 2 is formed by welding and fixing two front and rear thin plates, thereby improving the heat exchange efficiency of the heat exchanger.

[0072] Embodiment 4: A reactor comprises a fixing frame and a sealing shell 7, wherein the sealing shell 7 is fixed to the fixing frame on both sides, and is provided with a sealing cavity 71, a first fluid inlet 73, a first fluid outlet 74, a second fluid inlet 75 and a second fluid outlet 76 on the sealing shell 7, and the sealing shell 7 is provided with the heat transfer plate module, the first fluid inlet 73 and the first fluid outlet 74 are connected with the sealing cavity 71, the sealing cavity 71 is connected with the heat exchange space 4, and the second fluid inlet 75 and the second fluid outlet 76 pass through the sealing cavity 71 and are respectively connected with one of the material pipes 1.

[0073] By adopting the above-mentioned technical scheme, the reactor using the above-mentioned heat exchange module divides the fluid in the heat exchange space 4 due to the pipe mouth guide plate 10, and guides the fluid to the flow field away from the weld, so that the flow velocity of the fluid that may have pressure fluctuations is more uniform when entering the fluid channel, and the impact force of the fluid on the welding joint between the heat exchange plate 2 and the material pipe 1 is reduced, and the alternating stress of the fluid during long-term operation that causes the welding failure between the heat exchange plate 2 and the material pipe 1 in the heat exchange module is avoided, thereby extending the service life of the reactor. The heat exchange plate 2 is formed by welding and fixing two front and rear thin plates, thereby improving the heat exchange efficiency of the reactor.

[0074] Furthermore, in order to protect the stability of the inner wall of the material pipe 1 , a built-in tie rod 8 is provided in the material pipe 1 . The built-in tie rod 8 extends in the front-to-back direction, and both ends of the built-in tie rod 8 are respectively connected to the front and rear end walls of the material pipe 1 .

[0075] By adopting the above-mentioned technical scheme, when the heat exchange plate 2 injects the fluid into the material pipe 1, since the heat exchange tube is connected to the side wall of the material pipe 1, there will be a certain impact when the fluid enters the material pipe 1, and the built-in pull rod 8 partially offsets the impact of the fluid to reduce its impact, and creates pressure at the end of the material pipe 1. The built-in pull rod 8 pulls the two ends of the material pipe 1, thereby protecting the side wall of the material pipe 1 from being damaged. Therefore, the built-in pull rod 8 in the material pipe 1 can make the side wall of the material pipe 1 more stable, ensuring the safety of the material pipe 1 during work, and due to the way the fluid enters the heat exchange plate 2, the existence of the built-in pull rod 8 can withstand part of the impact force, making the side wall of the material pipe 1 more solid.

[0076] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A heat transfer plate module, comprising a material pipe, a heat exchange assembly consisting of a plurality of heat exchange plates spaced apart in the front-to-back direction, and a back plate fixed to the left and right sides of the heat exchange assembly, a heat exchange space is formed between two adjacent heat exchange plates, the material pipe is connected and fixed to the upper and lower sides of the heat exchange plate group, a fluid cavity is provided in the heat exchange plate, and the fluid cavity is communicated with the interior of the material pipe, wherein: The heat exchange assembly is provided with a pipe orifice guide plate, the pipe orifice guide plate is close to the material pipe and is spaced apart from the material pipe in the left-right direction, and a flow channel is formed between the pipe orifice guide plate and the material pipe; The heat exchange assembly is provided with a distance piece, the distance piece includes a distance assembly, the distance assembly includes a central axis and a plurality of distance tubes sleeved on the central axis, the ends of the distance piece are provided with end fixing pieces, the plurality of distance tubes are arranged at intervals along the axial direction of the central axis, the heat exchange plate is provided with a through hole for the central axis to pass through, and two adjacent distance tubes clamp the heat exchange plate; there are a plurality of distance assemblies, and the plurality of distance assemblies are spaced apart in the heat exchange plate group; The heat exchange plate is formed by welding two front and rear thin plates, and a plurality of welding parts are distributed on the heat exchange plate. A fluid channel for fluid flow is provided between two adjacent welding parts, and the through hole is provided in the welding part; The welding parts are evenly distributed on the heat exchange plate, the distance between two adjacent welding parts is L1, the distance between any two welding parts adjacent to the heat exchange plate and the heat exchange plate is equal, the distance from the material pipe to the center of any welding part is L2, L1 / 2≤L2≤L1.

2. A heat transfer plate module according to claim 1, characterized in that: The pipe orifice guide plate is provided with a plurality of third positioning parts at intervals along the front-to-back direction, and the heat exchange plate is provided with a fourth positioning part adapted to the third positioning part, and the fourth positioning part is connected to the corresponding third positioning part.

3. A heat transfer plate module according to claim 2, characterized in that: The material pipe includes a feed pipe and a discharge pipe, and the end of the pipe mouth guide plate corresponding to the feed pipe is inclined toward the side close to the feed pipe away from the heat exchange plate; and / or the end of the pipe mouth guide plate corresponding to the discharge pipe is inclined toward the side away from the discharge pipe away from the heat exchange plate.

4. A heat transfer plate module according to claim 1, characterized in that: The distance piece is provided with a plurality of first positioning parts spaced apart in the front-to-back direction, the heat exchange plate is provided with a second positioning part adapted to the first positioning part, and the second positioning part is connected to the corresponding first positioning part; the number of the distance pieces is multiple, and the multiple distance pieces are spaced apart in the up-down direction.

5. A heat transfer plate module according to claim 4, characterized in that: The distance piece includes a positioning plate, and the positioning plate is fixedly mounted on the back plate; or, the distance piece and the positioning plate are an integrally formed structure.

6. A heat exchanger, comprising a fixing frame and a sealing shell, wherein both sides of the sealing shell are fixed to the fixing frame, and the sealing shell is provided with a sealing cavity, a first fluid inlet, a first fluid outlet, a second fluid inlet and a second fluid outlet, wherein: The heat transfer plate module according to claim 1 is arranged in the sealing shell, the first fluid inlet and the first fluid outlet are connected to the sealing cavity, the sealing cavity is connected to the heat exchange space, the second fluid inlet and the second fluid outlet pass through the sealing cavity and are respectively connected to one of the material pipes.

7. A reactor, comprising a fixing frame and a sealing shell, wherein both sides of the sealing shell are fixed to the fixing frame, and the sealing shell is provided with a sealing cavity, a first fluid inlet, a first fluid outlet, a second fluid inlet and a second fluid outlet, wherein: The heat transfer plate module according to claim 1 is arranged in the sealing shell, the first fluid inlet and the first fluid outlet are connected to the sealing cavity, the sealing cavity is connected to the heat exchange space, the second fluid inlet and the second fluid outlet pass through the sealing cavity and are respectively connected to one of the material pipes.

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