Heat exchanger

Abstract

The utility model relates to a heat exchanger, which comprises heat exchange sheets, sealing elements, a feeding pipe, a discharging pipe and mounting plates, and is characterized in that the heat exchange sheets and the sealing elements are arranged between the mounting plates, the sealing elements are arranged between the heat exchange sheets, the feeding pipe is arranged on the mounting plate at the top, the discharging pipe is arranged on the mounting plate at the bottom, and a pressure release valve is arranged on the feeding pipe. Working pressure in the heat exchanger is controlled through automatic opening and closing of the pressure release valve, and leakage of the heat exchanger caused by overlarge pressure is avoided.

Description

Technical Field

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

[0002] The interlayer heat exchanger is formed by a sandwich between two adjacent plates. The cold and hot fluids are separated by a solid wall (tube or plate) and do not mix. It involves the transfer and conversion of heat. The heat exchange is carried out through the interlayer to make the fluid temperature reach the specified index of the process to meet the needs of the process conditions. The gap between the two plates is usually connected by a pipe or a sealing gasket to form a closed environment that can loosely accommodate the flow and transfer of materials. It is suitable for high temperature, high pressure, high viscosity, and easy to scale fluids.

[0003] When cold water and hot water are transported into the heat exchanger respectively, the pressure of the cold water and hot water entering the plate heat exchanger needs to be strictly controlled to prevent the water with too fast flow rate and high pressure from impacting and damaging the inside of the heat exchanger, thereby causing leakage of the heat exchanger.

[0004] When the existing technology adjusts the pressure inside the heat exchanger, manual pressure adjustment is often used for pressure relief. However, it is difficult to accurately determine the pressure inside the heat exchanger through manual adjustment, and the strength of the water pressure will affect the speed of the water flow inside the heat exchanger, thereby affecting the heat exchange efficiency. In addition, the existing technology also requires manual inspection to see if the internal pressure of the heat exchanger exceeds the standard. This process not only causes a significant increase in workload and labor costs, but also makes it difficult for humans to accurately control the internal pressure of the heat exchanger. Utility Model Content

[0005] The first aspect of the utility model aims to solve the problem of ensuring the heat exchange efficiency of the heat exchanger. A heat exchanger is provided, wherein a pressure relief valve is installed at the inlet of the heat exchanger. The working pressure in the heat exchanger is controlled by automatically opening and closing the pressure relief valve, and the speed of the internal water flow is controlled by controlling the water pressure, thereby effectively ensuring or even improving the heat exchange efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a heat exchanger, including heat exchange plates, seals, inlet pipes, outlet pipes and mounting plates, multiple heat exchange plates and seals are arranged between the mounting plates, seals are arranged between the heat exchange plates, the top mounting plate is provided with an inlet pipe, the bottom mounting plate is provided with an outlet pipe, and a pressure relief valve is arranged on the inlet pipe. The utility model arranges sealing members between a plurality of heat exchange plates of the heat exchanger so that the heat exchanger forms a sealed cavity, arranges a feed pipe on the mounting plate at the top of the heat exchanger, and arranges a discharge pipe on the mounting plate at the bottom, so that the material enters the sealed cavity inside the heat exchanger through the feed pipe at the upper end, and is output through the discharge pipe arranged at the bottom after heat exchange in the heat exchange cavity of the heat exchanger; a pressure relief valve is arranged on the feed pipe, and the working pressure in the closed heat exchanger can be automatically controlled by the pressure relief valve, and the speed of the internal water flow can be controlled by controlling the working pressure, so as to effectively ensure or even improve the heat exchange efficiency; in addition, by configuring the pressure relief valve, there is no need to manually detect and adjust the working pressure (internal pressure), there is no safety risk, and it is also conducive to reducing workload and labor costs.

[0007] The second aspect of the utility model aims to solve the technical problem that it is difficult to accurately adjust and control the internal pressure of the existing heat exchanger by artificial water pressure regulation. Furthermore, a heat exchange cavity is formed between the heat exchange plates, and a pressure sensor is installed inside the heat exchange cavity. The working pressure inside the heat exchanger is monitored by the pressure sensor. One or more pressure sensors can be set inside the heat exchanger to detect the pressure at different positions in the heat exchanger.

[0008] Preferably, a temperature sensor is provided on the discharge pipe, which detects the temperature of the material after heat exchange output from the discharge pipe, and monitors the heat exchange effect of the heat exchanger according to the temperature data recognized by the temperature sensor.

[0009] Preferably, the pressure relief valve is equipped with a controller, which is electrically connected to the pressure sensor and the temperature sensor. The setting of the controller enables the pressure relief valve to be automatically opened and closed under the command of the controller. In addition to the most basic pressure relief function, the pressure relief valve also has a certain pressure regulation function. The opening of the valve core is controlled by the controller on the pressure relief valve to achieve precise control of the pressure; the pressure sensor and the temperature sensor are electrically connected to the controller installed on the pressure relief valve, so that the signals and data recognized by the pressure sensor and the temperature sensor are sent to the controller, and the controller controls the pressure relief valve according to the information recognized by the sensor.

[0010] The third aspect of the utility model is to solve the problem of poor sealing effect in the heat exchanger. Further, a rounded rectangular groove is provided on the upper surface of the heat exchange plate, and a plurality of material holes are provided on the same side of the heat exchange plate, and the material holes are arranged on the bottom surface of the rounded rectangular groove. The rounded rectangular groove enables a smooth transition around the heat exchange cavity formed between the heat exchange plates, thereby reducing the flow resistance of the material in the heat exchange cavity.

[0011] Preferably, the heat exchanger plates are stacked and the material holes of adjacent heat exchanger plates are staggered. The staggered material holes of two adjacent layers of heat exchanger plates enable the materials exchanging heat on the heat exchanger plates to fully utilize the heat exchange area of ​​the heat exchanger plates, thereby improving the heat exchange effect.

[0012] Preferably, a plurality of reinforcing ribs are arranged inside the heat exchanger fin, and a flange interface is arranged on the side wall of the heating fin. The arrangement of the reinforcing ribs inside the heat exchanger fin can not only improve the strength of the heat exchanger fin to avoid leakage caused by deformation of the heat exchanger fin, but also form a cross-flow or spiral flow channel inside the heat exchanger fin through the internal reinforcing ribs, thereby increasing the flow time of the medium inside the heat exchanger fin.

[0013] The fourth aspect of the utility model aims to solve the problem of improving the sealing effect. Furthermore, a support layer and a pressure regulating layer are arranged inside the seal, and the pressure regulating layer is coated on the outside of the support layer. The support layer is arranged inside the seal to shape the seal body and strengthen the supporting function of the seal, so that the seal will not deform to the side and cause displacement after being squeezed, and prevent the seal from deforming and displacing under the pressure squeezing, resulting in leakage of materials inside the heat exchanger and affecting the heat exchange effect. The pressure regulating layer is coated on the outside of the support layer to ensure the sealing effect and prevent unnecessary leakage. The pressure regulating layer has a certain amount of compression, which causes the installation position of the heat exchanger to be unstable under the pressure inside the heat exchanger. The pressure regulating layer can fill the gap between the heat exchanger plates by deformation, and the seal always has pressure transmitted to the sealing contact surface of the heat exchanger plate to achieve sealing compensation.

[0014] Preferably, the seal is installed at the side position between the heat exchanger fins, and the bottom of the seal is arranged on the upper end surface of the rounded rectangular groove. The seal is installed on the upper end surface of the rounded rectangular groove, so that the sealing part between two adjacent heat exchanger fins is realized by the seal, and the other part is realized by the upper end surface of the side of the heat exchanger fin, thereby improving the integrity of the heat exchanger seal. Preferably, a heat exchanger also includes a fastening mechanism, which is evenly arranged at the side position of the heat exchanger, and the fastening mechanism includes an adjusting screw, a tubular pressure plate and an adjusting nut, and the tubular pressure plate and the adjusting nut are sleeved at both ends of the adjusting screw, and the tubular pressure plate is abutted against the outer side of the mounting plate of the heat exchanger, and the adjusting nut is movably connected to the adjusting screw through a thread, and a spring gasket is arranged between the adjusting nut and the tubular pressure plate. Tubular pressure plates for abutting against the mounting plate are provided at both ends of the adjusting screw. The tubular pressure plates are fastened to the heat exchanger under the locking action of the adjusting nut, and a spring washer is provided between the adjusting nut and the tubular pressure plate to prevent the tubular pressure plate from being separated from the mounting plate due to loosening of the adjusting nut, thereby affecting the installation and sealing effects.

[0015] The beneficial effect of the utility model is that a pressure relief valve is installed on the feed pipe at the top of the heat exchanger, the working pressure in the heat exchanger is controlled by automatically opening and closing the pressure relief valve, and the speed of the internal water flow is controlled by controlling the water pressure, thereby effectively ensuring or even improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the heat exchanger.

[0018] Figure 3 A partial schematic diagram of the heat exchange chamber.

[0019] The reference numerals include: 1. heat exchange plate; 11. heat exchange chamber; 12. rounded rectangular groove; 13. discharge port; 2. seal; 3. inlet pipe; 4. outlet pipe; 5. mounting plate; 6. pressure relief valve; 7. pressure sensor; 8. temperature sensor; 9. fastening mechanism; 91. adjusting screw; 92. tubular pressure plate; 93. adjusting nut; 94. spring washer. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0021] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0022] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0023] Embodiment 1:

[0024] Basically as attached Figure 1As shown, a heat exchanger includes a heat exchange plate 1, a seal 2, an inlet pipe 3, an outlet pipe 4 and a mounting plate 5, characterized in that: a plurality of heat exchange plates 1 and seals 2 are arranged between the mounting plates 5, seals 2 are arranged between the heat exchange plates 1, the top mounting plate 5 is provided with an inlet pipe 3, the bottom mounting plate 5 is provided with an outlet pipe 4, and a pressure relief valve 6 is arranged on the inlet pipe 3.

[0025] In this embodiment, a seal 2 is arranged between the multiple heat exchange plates 1 of the heat exchanger so that the heat exchanger forms a sealed cavity. An inlet pipe 3 is arranged on the mounting plate 5 at the top of the heat exchanger, and a discharge pipe 4 is arranged on the mounting plate 5 at the bottom, so that the material enters the sealed heat exchange cavity 11 inside the heat exchanger through the inlet pipe 3 at the upper end, and is output through the discharge pipe 4 arranged at the bottom after heat exchange in the heat exchange cavity 11 of the heat exchanger. A pressure relief valve 6 is arranged on the inlet pipe 3, and the working pressure in the closed heat exchanger is adjusted by the pressure relief valve.

[0026] In implementation, the pressure relief valve may be an existing spring-type pressure relief valve. When in use, the opening pressure of the pressure relief valve may be adjusted by adjusting the preload force of the spring to meet the needs of different occasions.

[0027] A heat exchange cavity 11 is formed between the heat exchange plates 1, and a pressure sensor 7 is installed inside the heat exchange cavity 11; a temperature sensor 8 is arranged on the discharge pipe.

[0028] The working pressure inside the heat exchanger is monitored by a pressure sensor. One or more pressure sensors 7 can be provided inside the heat exchanger to detect the pressure at different positions in the heat exchanger.

[0029] The temperature of the material after heat exchange output from the discharge pipe 4 is detected by the temperature sensor 8, and the heat exchange effect of the heat exchanger is monitored according to the temperature data recognized by the temperature sensor 8.

[0030] A controller is installed on the pressure relief valve 6, and the controller is electrically connected to the pressure sensor 7 and the temperature sensor 8. The setting of the controller enables the pressure relief valve 6 to be automatically opened and closed under the command of the controller. In addition to the most basic pressure relief function, the pressure relief valve 6 also has a certain pressure regulation function. The opening of the valve core is controlled by the controller on the pressure relief valve 6 to achieve precise control of the pressure; the pressure sensor 7 and the temperature sensor 8 are both electrically connected to the controller installed on the pressure relief valve 6, so that the identified signals and data on the pressure sensor 7 and the temperature sensor 8 are sent to the controller, and the controller controls the pressure relief valve 6 according to the information identified by the sensors. It can be understood that at this time, the pressure relief valve can be an electric pressure relief valve so that it can be operated under the control of the controller.

[0031] During use, the pressure sensor 7 can be located at the upper layer of the heat exchanger, or can be evenly arranged in multiple heat exchange chambers 11 of the heat exchanger. The pressure sensor 7 identifies that the working pressure in the heat exchanger is too high, and sends the information to the controller. The controller controls the pressure relief valve to open so that the heat exchanger is depressurized. In addition, the temperature sensor 8 detects the temperature of the material output by the discharge pipe 4. When the temperature of the heat exchange medium flowing in the heat exchange plate is within the standard, when the temperature of the output material is too low or too high, the temperature sensor 8 sends the identification content to the controller, and the controller controls the pressure relief valve 6 to input the pressure at the feed pipe 3 to control the flow rate of the material in the heat exchanger.

[0032] Embodiment 2:

[0033] like Figure 2 As shown, a rounded rectangular groove 12 is formed on the upper surface of the heat exchange plate 1, and a plurality of material holes 13 are formed on the same side of the heat exchange plate 1. The material holes 13 are arranged on the bottom surface of the rounded rectangular groove 12. The rounded rectangular groove 12 enables a smooth transition around the heat exchange cavity 11 formed between the heat exchange plates 1, thereby reducing the flow resistance of the material in the heat exchange cavity 11.

[0034] The material in the rounded rectangular groove 12 of the heat exchange chamber 11 can contact the inner side wall of the rounded rectangular groove 12 which is integrally connected to the heat exchange plate 1. The material flowing around the heat exchange plate 1 can not only exchange heat on the heat exchange plane of the heat exchange chamber 11 but also exchange heat with the side wall of the rounded rectangular groove 12 which is connected to the inner cavity of the heat exchange plate 1, thereby further improving the overall heat exchange effect.

[0035] The heat exchanger fins 1 are stacked and installed, and the material holes 13 of adjacent heat exchanger fins 1 are staggered. The material holes 13 of two adjacent layers of heat exchanger fins 1 are staggered.

[0036] In addition, in order to improve the flow efficiency of the heat exchange plate, a plurality of material drainage grooves are provided on the surface of the heat exchange plate 1 to communicate with the discharge hole 13 .

[0037] The top mounting plate 5 also forms a closed heat exchange cavity 11 with the heat exchange plate 1. Multiple heat exchange plates 1 are stacked to form multiple closed heat exchange cavities 11. Multiple heat exchange cavities 11 form a material channel through discharge holes 13. The discharge holes 13 of two adjacent heat exchange plates 1 are staggered to form a Z-shaped material channel, so that the material exchanging heat in the heat exchange plate 1 can make full use of the heat exchange area of ​​the heat exchange plate 1 and improve the heat exchange effect.

[0038] A plurality of reinforcing ribs are arranged inside the heat exchanger 1, and a flange interface is arranged on the side wall of the heating plate. The arrangement of the reinforcing ribs inside the heat exchanger 1 can not only improve the strength of the heat exchanger 1 to prevent leakage caused by deformation of the heat exchanger 1, but also form a cross-flow or spiral flow channel inside the heat exchanger 1 through the internal reinforcing ribs, thereby increasing the flow time of the medium inside the heat exchanger 1.

[0039] Among them, flange joints are arranged on the side walls of both sides of the heat exchanger 1 for entering the internal fluid of the heat exchanger 1. The joints on the heat exchanger 1 are connected by U-shaped tubes so that the internal fluid cavities between the upper and lower layers of the heat exchanger 1 are connected, so that the fluid cavities inside several heat exchanger fins 1 form a continuous upward flow channel through multiple U-shaped tubes for continuous transportation of the heat exchange medium. In addition, reinforcing ribs can be arranged in the fluid cavity inside the heat exchanger 1, so that the water channel formed by the fluid cavity under the action of the reinforcing ribs allows the fluid in the fluid cavity inside the heat exchanger 1 to stay longer, thereby improving the heat exchange effect of the heat exchanger.

[0040] Embodiment 3:

[0041] like Figure 3 As shown, a support layer and a pressure regulating layer are arranged inside the seal 2, and the pressure regulating layer is coated on the outside of the support layer. The support layer is arranged inside the seal 2 to shape the seal 2 body, and strengthen the support function of the seal 2, so that the seal 2 will not deform to the side and cause displacement after being squeezed, and prevent the seal 2 from deforming and displacing under the pressure extrusion, resulting in leakage of materials inside the heat exchanger 2 and affecting the heat exchange effect. The pressure regulating layer is coated on the outside of the support layer to ensure the sealing effect and prevent unnecessary leakage. The pressure regulating layer has a certain amount of compression, which causes the installation position of the heat exchange plate 1 to be unstable under the pressure inside the heat exchanger. The pressure regulating layer can fill the gap between the heat exchange plates 1 by deformation, and the seal 2 always has pressure transmitted to the sealing contact surface of the heat exchange plate 1 to achieve sealing compensation.

[0042] The support layer is made of hard plate, which can be stainless steel corrugated plate or asbestos plate. Both stainless steel corrugated plate and asbestos plate have good high temperature resistance and pressure resistance, and can withstand high pressure and high temperature in the heat exchanger. The hard plate has high hardness and strength, and can withstand the pressure from the upper and lower end surfaces. The pressure regulating layer is used as a sealing compensation position. The material with good compression capacity such as soft silicone is used. The pressure regulating layer provides sealing for the heat exchanger to prevent liquid, gas or dust from leaking from the joint part of the heat exchanger equipment, ensuring the sealing effect and preventing unnecessary leakage.

[0043] In order to improve the use effect of the seal 2, an anti-corrosion layer covered with polytetrafluoroethylene material can be provided on the outer layer of the seal. The polytetrafluoroethylene material has the function of preventing corrosion. The provision of the anti-corrosion layer can improve the service life and pressure resistance of the mechanical sealing device.

[0044] The seal 2 is installed at the side position between the heat exchanger fins 1, and the bottom of the seal 2 is set on the upper end surface of the rounded rectangular groove 12. The seal 2 is installed on the upper end surface of the rounded rectangular groove 12, so that the sealing part between two adjacent heat exchanger fins 1 is realized by the seal, and the other part is realized by the upper end surface of the side of the heat exchanger fin 1, which improves the integrity of the heat exchanger seal.

[0045] Without changing the spacing inside the heat exchange chamber 11, the upper end surface of the side of the heat exchange plate 1 with a rounded rectangular groove 12 extends upward, and the side sealing position of the heat exchange chamber 11 is composed of the upper end and the seal 2. The integrated design of the upper end of the heat exchange chamber 11 and the heat exchange plate 1 improves the integrity, and the required height of the seal 2 on the side of the heat exchange chamber 11 is reduced.

[0046] A heat exchanger also includes a fastening mechanism 9, which is evenly arranged at the side of the heat exchanger. The fastening mechanism 9 includes an adjusting screw 91, a tubular pressure plate 92 and an adjusting nut 93. The tubular pressure plate 92 and the adjusting nut 93 are sleeved at both ends of the adjusting screw 91. The tubular pressure plate 92 abuts against the outer side of the mounting plate 5 of the heat exchanger. The adjusting nut 93 is movably connected to the adjusting screw 91 through threads. A spring washer 94 is arranged between the adjusting nut 93 and the tubular pressure plate 92. Tubular pressure plates 92 for abutting against the mounting plate 5 are arranged at both ends of the adjusting screw 91. The tubular pressure plate 92 is fastened to the heat exchanger under the locking action of the adjusting nut 93, and a spring washer 94 is arranged between the adjusting nut 93 and the tubular pressure plate 92 to prevent the loosening of the adjusting nut 93 from causing the tubular pressure plate 92 to separate from the mounting plate 5 and affect the installation and sealing effect.

[0047] The seal 2 is arranged in the heat exchange cavity 11 between the heat exchange plates 1 and is fastened and connected by the mounting plate 5 and the fastening mechanism 9. In order to make the heat exchange plates 1 and the seal 2 in the heat exchanger be subjected to uniform force, the fastening mechanism 9 is evenly and symmetrically arranged on the outside of the heat exchanger to prevent excessive local pressure from causing the seal 2 to move or crack and damage the sealing performance of the heat exchanger.

[0048] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A heat exchanger, comprising a heat exchange plate (1), a sealing member (2), an inlet pipe (3), an outlet pipe (4) and a mounting plate (5), characterized in that: A plurality of heat exchange plates (1) and seals (2) are arranged between the mounting plates (5), seals (2) are arranged between the heat exchange plates (1), a feed pipe (3) is arranged on the top mounting plate (5), a discharge pipe (4) is arranged on the bottom mounting plate (5), and a pressure relief valve (6) is arranged on the feed pipe (3).

2. A heat exchanger according to claim 1, characterized in that: A heat exchange cavity (11) is formed between the heat exchange plates (1), and a pressure sensor (7) is installed inside the heat exchange cavity (11).

3. A heat exchanger according to claim 1, characterized in that: A temperature sensor (8) is provided on the discharge pipe (4).

4. A heat exchanger according to any one of claims 1 to 3, characterized in that: A controller is installed on the pressure relief valve (6), and the controller is electrically connected to the pressure sensor (7) and the temperature sensor (8).

5. A heat exchanger according to claim 1, characterized in that: A rounded rectangular groove (12) is provided on the upper surface of the heat exchange plate (1), and a plurality of material holes (13) are provided on the same side of the heat exchange plate. The material holes (13) are arranged on the bottom surface of the rounded rectangular groove (12).

6. A heat exchanger according to claim 5, characterized in that: The heat exchange fins (1) are installed in layers, and the material holes (13) of adjacent heat exchange fins (1) are arranged in a staggered manner.

7. A heat exchanger according to claim 5, characterized in that: A plurality of reinforcing ribs are arranged inside the heat exchange plate (1), and a flange interface is arranged on the side wall of the heating plate.

8. A heat exchanger according to claim 1, characterized in that: A support layer and a pressure regulating layer are arranged inside the sealing element (2), and the pressure regulating layer is coated on the outside of the support layer.

9. A heat exchanger according to claim 1, characterized in that: The sealing member (2) is installed at the side position between the heat exchange fins (1), and the bottom of the sealing member (2) is arranged on the upper end surface of the rounded rectangular groove (12).

10. A heat exchanger according to any one of claims 5 to 9, characterized in that: The heat exchanger further comprises a fastening mechanism (9), the fastening mechanism (9) being evenly arranged at the side of the heat exchanger, the fastening mechanism (9) comprising an adjusting screw (91), a tubular pressure plate (92) and an adjusting nut (93), the tubular pressure plate (92) and the adjusting nut (93) being sleeved at both ends of the adjusting screw (91), the tubular pressure plate (92) and the adjusting nut (93), the tubular pressure plate (92) being in contact with the outer side of the mounting plate (5) of the heat exchanger, the adjusting nut (93) being movably connected to the adjusting screw (91) via a thread, and a spring gasket (94) being arranged between the adjusting nut (93) and the tubular pressure plate (92).

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