Plate heat exchanger with built-in oil cooling

Abstract

The utility model relates to heat exchange equipment technical field discloses a built -in oil cooling's plate heat exchanger, including fixed panel, movable cover, set up in the both sides multiple heat transfer sheet, sealing gasket and be used for the clamping screw of movable cover to fixed panel compression, still include the anti -vibration assembly, this anti -vibration assembly is by the limit slide rail of fixed connection in fixed panel inner side wall, along the sliding connection of limit slide rail slider and connecting rod constitute, one end of this connecting rod is connected with slider, the other end fixed connection in movable cover's outside, through this mechanical restraint structure converts movable cover's vibration into the controlled movement along single track. The utility model has solved the defect that the existing heat exchanger is caused vibration due to fluid impact, leads to equipment operation instability and the component easy damage, has improved the operation stability and reliability of complete machine significantly, has effectively prolonged the service life.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, and in particular to a plate heat exchanger with built-in oil cooling. Background Technology

[0002] Plate heat exchangers, as efficient and compact heat exchange devices, are widely used in various industrial fields due to their advantages such as high heat transfer efficiency, small footprint, and convenient disassembly and cleaning. Especially in hydraulic systems, lubrication systems, or engine systems, plate heat exchangers are often used for forced cooling of high-temperature oils to ensure the stable operation of the entire system and extend the service life of the oil.

[0003] In applications with built-in oil cooling, high-temperature oils such as hydraulic oil or lubricating oil usually have a certain viscosity, and in order to pursue high heat exchange efficiency, the oil and cooling medium need to maintain a high flow rate in the narrow and tortuous flow channels between the heat transfer plates.

[0004] However, the inventors discovered in practice that high-velocity fluids, especially viscous fluids, can easily generate continuous fluid impact forces on the thin heat transfer plate assembly when flowing through the plate channels. This can induce mechanical vibration or tremor in the entire plate assembly and even clamping components such as the movable cover plate. This vibration not only produces harsh operating noise and reduces the operational stability of the equipment, but more seriously, long-term vibration can lead to loosening of clamping components, fatigue damage to the heat transfer plates, or premature aging and failure of sealing gaskets, posing a safety hazard of media leakage and shortening the overall service life of the heat exchanger.

[0005] Therefore, this utility model proposes a plate heat exchanger with built-in oil cooling to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a plate heat exchanger with built-in oil cooling, which aims to improve the problems of existing plate heat exchangers with built-in oil cooling, such as the vibration of the heat transfer plate assembly caused by high-speed impact of internal fluid, resulting in unstable equipment operation, noise generation, and potential accelerated damage to sealing components.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A plate heat exchanger with built-in oil cooling includes: a fixed panel, a movable cover plate, multiple heat transfer plates disposed between the fixed panel and the movable cover plate, a sealing gasket disposed between two adjacent heat transfer plates, and a clamping screw for pressing the movable cover plate toward the fixed panel; and an anti-vibration assembly.

[0008] The anti-vibration component includes a limiting slide rail, a slider that slides along the limiting slide rail, and a connecting rod.

[0009] Furthermore, the limiting slide rail is fixedly connected to the inner wall of the fixed panel, one end of the connecting rod is connected to the slider, and the other end is fixedly connected to the outer side of the movable cover plate. Preferably, the plate heat exchanger with built-in oil cooling further includes a fixed back plate, and the fixed panel and the fixed back plate are fixedly connected by fixing bolts.

[0010] Preferably, the fixed panel has an internal oil inlet and an internal oil outlet, and the fixed back plate has a coolant inlet and a coolant outlet.

[0011] Preferably, the length direction of the limiting slide rail is parallel to the axial direction of the clamping screw.

[0012] Preferably, the connecting rod and the slider are rotatably connected.

[0013] Preferably, the connecting rod is a rigid rod formed in one piece.

[0014] Preferably, the plate heat exchanger with built-in oil cooling further includes support feet, which are fixedly connected to the bottom of the fixed panel.

[0015] Preferably, the built-in oil-cooled plate heat exchanger includes two sets of the anti-vibration components, which are symmetrically arranged along the width direction of the movable cover plate.

[0016] This utility model has the following beneficial effects: 1. In this utility model, by setting an anti-vibration component, which includes a fixed limiting slide rail, a slider that slides along the limiting slide rail, and a connecting rod with one end connected to the slider and the other end fixedly connected to the movable cover plate, the problem of unstable operation caused by the internal fluid impact of the plate heat exchanger is solved. This achieves the technical effect of effectively suppressing equipment vibration and greatly improving the stability and reliability of equipment operation.

[0017] 2. In this utility model, by adopting an anti-vibration component composed of a limiting slide rail, a slider and a connecting rod, the irregular vibration of the movable cover plate under fluid impact is constrained into controlled movement along the slide rail. This solves the problem of metal fatigue of heat transfer plates and accelerated wear and aging of sealing gaskets caused by long-term equipment vibration in the prior art. It achieves the technical effect of reducing the wear of key components, extending the overall service life of the heat exchanger and reducing the maintenance frequency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a plate heat exchanger with built-in oil cooling proposed in this utility model. Figure 2This is a schematic diagram of the heat transfer plates of a plate heat exchanger with built-in oil cooling proposed in this utility model. Figure 3 This is a schematic diagram of the structure of a sealing gasket for a plate heat exchanger with built-in oil cooling, as proposed in this utility model. Figure 4 This is a schematic diagram of the anti-vibration component of a plate heat exchanger with built-in oil cooling proposed in this utility model.

[0019] Legend: 1. Fixed panel; 2. Support feet; 3. Internal oil outlet; 4. Internal oil inlet; 5. Fixed back plate; 6. Movable cover plate; 7. Clamping screw; 8. Anti-vibration assembly; 801. Limiting slide rail; 802. Slider; 803. Connecting rod; 9. Sealing gasket; 10. Fixing bolt; 11. Heat transfer plate; 12. Coolant inlet; 13. Coolant outlet. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 4 This utility model provides a plate heat exchanger with built-in oil cooling, which aims to solve the technical problem that the internal components of existing plate heat exchangers are prone to vibration due to fluid impact during operation, thereby affecting the stability of the equipment.

[0022] like Figure 1 As shown, the built-in oil-cooled plate heat exchanger includes a fixed panel 1 and a movable cover 6, with multiple heat transfer plates 11 disposed between the fixed panel 1 and the movable cover 6. Figure 2 and Figure 3 A sealing gasket 9 is provided between two adjacent heat transfer plates 11. The clamping screw 7 passes through the movable cover plate 6 and is connected to the fixed panel 1. By tightening the clamping screw 7, the movable cover plate 6 can be pressed towards the fixed panel 1, thereby tightly pressing the assembly of multiple heat transfer plates 11 and sealing gaskets 9 to form a sealed channel for medium flow.

[0023] To improve the stability of equipment operation, the built-in oil-cooled plate heat exchanger further includes an anti-vibration component 8, as shown in the reference. Figure 1 and Figure 4The anti-vibration assembly 8 consists of a limiting slide rail 801, a slider 802, and a connecting rod 803. The limiting slide rail 801 is fixedly connected to the inner wall of the fixed panel 1, providing a stable installation reference for the anti-vibration assembly 8. The slider 802 is slidably connected to the limiting slide rail 801, allowing the slider 802 to move smoothly along the guide trajectory of the limiting slide rail 801. One end of the connecting rod 803 is connected to the slider 802, and the other end is fixedly connected to the outer side of the movable cover plate 6. Through this connection method, when the heat transfer plate 11 vibrates due to fluid impact and drives the movable cover plate 6, the connecting rod 803 will transmit this vibration tendency to the slider 802. The slider 802 moves under the constraint of the limiting slide rail 801, thereby effectively suppressing and buffering the abnormal vibration of the movable cover plate 6, and thus ensuring the stability of the entire heat transfer plate 11 assembly.

[0024] To construct a complete equipment framework and achieve stable anti-vibration function, this built-in oil-cooled plate heat exchanger also includes a fixed back plate 5, as shown in the reference. Figure 1 The fixed back plate 5 is set opposite to the fixed panel 1 and is fixedly connected by the fixing bolts 10. The fixed panel 1 and the fixed back plate 5 together constitute the main structure for bearing and holding the heat transfer plate 11 and the sealing gasket 9, and also provide a basic platform for the installation of the anti-vibration assembly 8.

[0025] The core of this technical solution lies in the specific structure and connection relationship of the anti-shake component 8. Please refer to the following for details. Figure 4 The limiting slide rail 801 of the anti-vibration component 8 is fixedly connected to the inner wall of the fixed panel 1. Its length direction is set parallel to the axis of the clamping screw 7. This setting ensures that the guide trajectory of the limiting slide rail 801 is consistent with the main force and pressing direction of the movable cover plate 6. The slider 802 is installed in the limiting slide rail 801 in a sliding connection manner, so that it can reciprocate along the length direction of the limiting slide rail 801. The connecting rod 803 is preferably a rigid rod integrally formed to ensure the effective transmission of vibration constraint torque. One end of the connecting rod 803 is rotatably connected to the slider 802. This rotatable connection design allows the connecting rod 803 to transmit axial constraint force while adapting to the slight angular sway that the movable cover plate 6 may produce during vibration. The other end of the connecting rod 803 is fixedly connected to the outside of the movable cover plate 6. When the movable cover plate 6 vibrates due to fluid impact, the vibration is transmitted to the slider 802 through the connecting rod 803 and is restricted to the sliding path of the limiting slide rail 801, thereby achieving stable support and anti-vibration for the movable cover plate 6.

[0026] To achieve the heat exchange function, the fixed panel 1 is provided with an internal oil inlet 4 and an internal oil outlet 3, while the fixed back plate 5 is provided with a coolant inlet 12 and a coolant outlet 13. The support feet 2 are fixedly connected to the bottom of the fixed panel 1 to provide stable installation support for the entire equipment.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: To ensure that the sliding direction of the slider 802 precisely corresponds to the main force-pressing direction of the movable cover plate 6, the length direction of the limiting slide rail 801 is preferably set to be parallel to the axis of the clamping screw 7.

[0028] Furthermore, in order to accommodate the slight angular sway that the movable cover plate 6 may produce during vibration while transmitting the constraint force, one end of the connecting rod 803 and the slider 802 are preferably configured as a rotatable connection. This rotatable connection can be specifically implemented using a pin connection structure, making the connection more flexible and reliable.

[0029] To ensure that the vibration constraint force can be transmitted quickly and without loss, the connecting rod 803 preferably adopts a one-piece rigid rod structure to avoid gaps or deformation caused by splicing multiple parts.

[0030] In a more preferred embodiment, to provide a more balanced and stable support effect and prevent the movable cover plate 6 from generating torsional vibration, the plate heat exchanger with built-in oil cooling may include two sets of anti-vibration components 8, which are symmetrically arranged along the width direction of the movable cover plate 6 and located on the left and right sides of the movable cover plate 6, respectively.

[0031] Working principle: During equipment operation, high-temperature built-in oil enters the equipment through built-in oil inlet 4, while low-temperature coolant enters through coolant inlet 12. Under the guidance and separation of sealing gasket 9, the two fluids alternately flow through the narrow channels on both sides of multiple heat transfer plates 11. The heat of the high-temperature built-in oil is conducted to the low-temperature coolant through the heat transfer plates 11, thereby achieving efficient heat exchange. After the heat exchange is completed, the cooled built-in oil is discharged from built-in oil outlet 3, while the coolant that has absorbed heat is discharged from coolant outlet 13.

[0032] During the high-speed flow of the two media through the heat transfer plate 11 channels, the impact force of the fluid can easily cause the assembly of multiple heat transfer plates 11 to vibrate. Since the entire heat transfer plate 11 assembly is pressed and fixed by the movable cover plate 6 through the clamping screw 7, the vibration will be directly transmitted to the movable cover plate 6, causing the movable cover plate 6 to wobble unstablely. At this time, the anti-vibration component 8 plays its core stabilizing role. Specifically, the vibration of the movable cover plate 6 will be transmitted to the slider 802 through the connecting rod 803 fixedly connected to its outer side, and the slider 802 is slidably connected to the fixed panel 1. The limiting slide rail 801 on the inner wall provides a unique and constrained sliding path for the slider 802. This path is preferably parallel to the axis of the clamping screw 7. This structural configuration transforms the irregular vibration of the movable cover plate 6 in multiple degrees of freedom into a controlled micro-displacement along the single direction of the limiting slide rail 801, thereby greatly suppressing the vibration amplitude of the movable cover plate 6. This ensures the operational stability of the entire heat transfer plate 11 assembly under high-speed fluid impact and solves the problems of poor equipment stability, high noise, or easy damage caused by fluid vibration in the prior art.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plate heat exchanger with built-in oil cooling, comprising: Fixed panel (1); Movable cover plate (6); Multiple heat transfer plates (11) are disposed between the fixed panel (1) and the movable cover plate (6). A sealing gasket (9) is disposed between two adjacent heat transfer plates (11); And a clamping screw (7) for pressing the movable cover (6) toward the fixed panel (1); Its features are, The plate heat exchanger with built-in oil cooling also includes an anti-vibration component (8), which includes a limiting slide rail (801), a slider (802) slidably connected along the limiting slide rail (801), and a connecting rod (803). The limiting slide rail (801) is fixedly connected to the inner wall of the fixed panel (1); One end of the connecting rod (803) is connected to the slider (802), and the other end is fixedly connected to the outside of the movable cover plate (6).

2. The plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: It also includes a fixed back plate (5), wherein the fixed panel (1) and the fixed back plate (5) are fixedly connected by fixing bolts (10).

3. A plate heat exchanger with built-in oil cooling according to claim 2, characterized in that: The fixed panel (1) is provided with an internal oil inlet (4) and an internal oil outlet (3), and the fixed back plate (5) is provided with a coolant inlet (12) and a coolant outlet (13).

4. A plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: The length direction of the limiting slide rail (801) is parallel to the axial direction of the clamping screw (7).

5. A plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: The connecting rod (803) and the slider (802) are rotatably connected.

6. A plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: The connecting rod (803) is a rigid rod formed in one piece.

7. A plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: It also includes a support foot (2), which is fixedly connected to the bottom of the fixed panel (1).

8. A plate heat exchanger with built-in oil cooling according to claim 1, characterized in that: The built-in oil-cooled plate heat exchanger includes two sets of anti-vibration components (8), which are symmetrically arranged along the width direction of the movable cover plate (6).

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