Clamping plate of seawater and fresh water plate heat exchanger of marine engine

Abstract

The utility model discloses a clamping plate of a sea and fresh water plate heat exchanger of a marine engine in the field of heat exchangers, which comprises a fixed clamping plate and a movable clamping plate, and a plurality of plate sheets arranged in sequence are arranged between the fixed clamping plate and the movable clamping plate. A plurality of clamping bolts are further arranged between the fixed clamping plate and the movable clamping plate, a plurality of counterbores used for installing the clamping bolts are formed in the fixed clamping plate, the clamping bolts sequentially penetrate through the plate sheets and the movable clamping plate, and the ends of the clamping bolts are sleeved with nuts and gaskets used for pressing the movable clamping plate. A seawater inlet, a seawater outlet, a fresh water outlet and a fresh water inlet are respectively formed in the fixed clamping plate. According to the utility model, the fixed clamping plate and the movable clamping plate can be tightened through the plurality of high-strength bolts so as to clamp and fix each plate, so that the mounting strength is improved and the mounting is firmer.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchangers, and specifically relates to a clamping plate for a marine engine seawater / freshwater plate heat exchanger. Background Technology

[0002] Seawater and freshwater plate heat exchangers typically consist of: fixed clamping plates, movable clamping plates, plates (for heat exchange), sealing strips, guide rods, fixing bolts, seawater inlet and outlet, and freshwater inlet and outlet. To adapt to seawater conditions, the plates are usually made of titanium, the bolts are made of corrosion-resistant Dacromet or surface-coated materials, and the clamping plates are made of stainless steel, carbon steel, or cast aluminum, with subsequent surface treatment. The disadvantage is that the current fixed and movable clamping plates have relatively low strength when clamping the plates, resulting in insufficient stability. Utility Model Content

[0003] The purpose of this utility model is to provide a clamping plate for a marine engine's seawater / freshwater plate heat exchanger, which can tighten the fixed clamping plate and the movable clamping plate with multiple high-strength bolts to clamp and fix each plate, thereby improving the installation strength and making it more secure.

[0004] The purpose of this utility model is achieved as follows: A clamping plate for a marine engine seawater / freshwater plate heat exchanger includes a fixed clamping plate and a movable clamping plate. A plurality of plates are arranged sequentially between the fixed clamping plate and the movable clamping plate. A plurality of clamping bolts are also arranged between the fixed clamping plate and the movable clamping plate. A plurality of countersunk holes for installing the clamping bolts are provided on the fixed clamping plate. Each clamping bolt passes through each plate and the movable clamping plate in sequence. The end of the clamping bolt is fitted with a nut and a washer to press the movable clamping plate. Seawater inlet, seawater outlet, freshwater outlet and freshwater inlet are respectively provided on the fixed clamping plate.

[0005] The heat exchange plates of this invention are tightened using high-strength bolts on a fixed clamping plate and a movable clamping plate. Eight rectangularly arrayed clamping bolts increase the clamping force of the fixed and movable clamping plates. Heat exchange channels are formed between the plates, allowing seawater and freshwater to enter and exit these channels for heat exchange. Compared to existing technologies, the advantages of this invention are: the fixed and movable clamping plates are made of precision-machined 6061T6 aluminum alloy, resulting in high strength (as evidenced by the mounting bolt holes for several supports); and light weight, with an aluminum alloy density of 2.9*10⁻⁶. 3 kg / m 3 It is resistant to sea wind corrosion; it is easy, convenient and beautiful to manufacture; it can tighten the fixed clamping plate and the movable clamping plate with multiple high-strength bolts to clamp and fix each plate, thereby improving the installation strength and making it more secure; it avoids the use of stainless steel or carbon steel for clamping plates, which would make them heavy and difficult to treat the surface, and avoids the use of cast aluminum for clamping plates, which has mold casting defects, loose texture and low strength of fixing screw sleeves.

[0006] As a further improvement of this utility model, the fixed clamping plate and the movable clamping plate are made of 6061T6 aluminum alloy.

[0007] As a further improvement of this utility model, the number of plates is 52-55, and a gasket is provided between any two adjacent plates. The gasket is made of EPDM rubber, and the plates and gaskets are arranged alternately and tightly. Preferably, the number of plates and gaskets is 54, and the alternately arranged plates form a heat exchange channel.

[0008] As a further improvement of this utility model, eight clamping bolts are provided. The clamping bolts are made of 35CrMoA material and are arranged in two rows, with each row including four clamping bolts spaced apart. Through holes are provided on both the plate and the washer to allow the clamping bolts to pass through. The bolt seats of the clamping bolts are fitted into the corresponding countersunk holes. High-strength bolts are used to improve the clamping strength of the fixed clamping plate and the movable clamping plate.

[0009] As a further improvement of this utility model, the seawater inlet and outlet are arranged correspondingly on the left and right, and the freshwater outlet and inlet are arranged correspondingly on the left and right. Both the seawater inlet and outlet include a large-diameter hole, a medium-diameter hole, and a small-diameter hole, with the diameters of the large-diameter hole, medium-diameter hole, and small-diameter hole decreasing in size. The small-diameter hole is located close to the plate and contains a rubber sleeve. The front and rear ends of the rubber sleeve are respectively provided with a stepped edge one and a stepped edge two. Stepped edge one abuts against the inner side of the fixing clamping plate, and stepped edge two is fitted at one point of the medium-diameter hole. The rubber sleeve is made of nitrile rubber. The fixing clamping plate has several circumferentially distributed screw holes around the medium-diameter hole one. The rubber sleeve improves the sealing performance, and the flanges at the ends of the seawater inlet and outlet pipes are fixedly connected to the screw holes by fasteners.

[0010] As a further improvement of this utility model, both the freshwater outlet and the freshwater inlet are stepped holes, each including a large-diameter hole and a small-diameter hole. The fixing clamping plate has several circumferentially distributed screw holes around the small-diameter hole. The flanges at the ends of the freshwater inlet and outlet pipes are fixedly connected to the screw holes via fasteners.

[0011] To facilitate the positioning of each plate, at least one positioning beam is provided between the fixed clamping plate and the movable clamping plate, passing vertically through each plate. Attached Figure Description

[0012] Figure 1 This is a top view of the present invention.

[0013] Figure 2 This is the front view of the fixed clamping plate.

[0014] Figure 3This is a cross-sectional view of the seawater outlet.

[0015] Figure 4 This is a cross-sectional view of the freshwater inlet.

[0016] Figure 5 This is a bottom view of the present invention.

[0017] Figure 6 This is the front view of the movable clamping plate.

[0018] The components include: 1. Fixed clamping plate; 2. Movable clamping plate; 3. Plate; 4. Clamping bolt; 5. Countersunk hole; 6. Nut; 7. Seawater inlet; 8. Seawater outlet; 9. Freshwater outlet; 10. Freshwater inlet; 11. Large diameter hole one; 12. Medium diameter hole one; 13. Small diameter hole one; 14. Rubber sleeve; 14a. Step edge one; 14b. Step edge two; 15. Screw hole; 16. Large diameter hole two; 17. Small diameter hole two; 18. Positioning crossbeam. Detailed Implementation

[0019] like Figure 1-6 As shown, a clamping plate for a marine engine seawater / freshwater plate heat exchanger includes a fixed clamping plate 1 and a movable clamping plate 2. The fixed clamping plate 1 and the movable clamping plate 2 are made of 6061T6 aluminum alloy. Several plates 3 are arranged sequentially between the fixed clamping plate 1 and the movable clamping plate 2. Several clamping bolts 4 are also arranged between the fixed clamping plate 1 and the movable clamping plate 2. Several countersunk holes 5 for installing the clamping bolts 4 are opened on the fixed clamping plate 1. Each clamping bolt 4 passes through each plate 3 and the movable clamping plate 2 in sequence. The end of the clamping bolt 4 is fitted with a nut 6 and a washer to press the movable clamping plate 2. Seawater inlet 7, seawater outlet 8, freshwater outlet 9 and freshwater inlet 10 are respectively opened on the fixed clamping plate 1.

[0020] The number of plates 3 is 52-55, and a gasket made of EPDM rubber is placed between any two adjacent plates 3. The plates 3 and gaskets are arranged alternately and tightly. The number of plates 3 and gaskets is preferably 54, and the alternately arranged plates 3 form a heat exchange channel. In order to facilitate the positioning of each plate 3, at least one positioning beam 18 is provided between the fixed clamping plate 1 and the movable clamping plate 2, which passes vertically through each plate 3.

[0021] Eight clamping bolts 4 are provided, and the material of the clamping bolts 4 is 35CrMoA. The eight clamping bolts 4 are distributed in two rows, one above the other. Each row of clamping bolts 4 includes four clamping bolts 4 spaced apart. Both the plate 3 and the washer have through holes that allow the clamping bolts 4 to pass through. The bolt seats of the clamping bolts 4 are fitted into the corresponding countersunk holes 5. High-strength bolts are used to improve the clamping strength of the fixed clamping plate 1 and the movable clamping plate 2.

[0022] Seawater inlet 7 and seawater outlet 8 are positioned correspondingly on the left and right sides, and freshwater outlet 9 and freshwater inlet 10 are positioned correspondingly on the left and right sides. Both seawater inlet 7 and seawater outlet 8 include a large-diameter hole 11, a medium-diameter hole 12, and a small-diameter hole 13. The diameters of the large-diameter hole 11, medium-diameter hole 12, and small-diameter hole 13 decrease progressively. The small-diameter hole 13 is positioned close to plate 3, and a rubber sleeve 14 is installed inside the small-diameter hole 13. The front and rear ends of the rubber sleeve 14 are respectively provided with a stepped edge 14a and a stepped edge 14b. The stepped edge 14a is attached to the inner side of the fixing clamping plate 1, and the stepped edge 14b is positioned at the medium-diameter hole 12. The rubber sleeve 14 is made of nitrile rubber. Several circumferentially distributed screw holes 15 are opened on the fixing clamping plate 1 around the medium-diameter hole 12. The rubber sleeve 14 improves the sealing performance, and the flanges at the ends of the seawater inlet and outlet pipes are fixedly connected to the screw holes 15 by fasteners.

[0023] Both the freshwater outlet 9 and the freshwater inlet 10 are stepped holes, and both include a large-diameter hole 16 and a small-diameter hole 17. Several circumferentially distributed screw holes 15 are provided on the clamping plate 1 around the small-diameter hole 17. The flanges at the ends of the freshwater inlet and outlet pipes are fixedly connected to the screw holes 15 by fasteners.

[0024] The heat exchange plates 3 of this invention are tightened by high-strength bolts through a fixed clamping plate 1 and a movable clamping plate 2. Eight clamping bolts 4 arranged in a rectangular array increase the clamping force of the fixed clamping plate 1 and the movable clamping plate 2. Heat exchange channels are formed between each plate 3, allowing seawater and freshwater to enter and exit the heat exchange channels for heat exchange. The advantages of this invention are: the fixed clamping plate 1 and the movable clamping plate 2 are made of 6061T6 aluminum alloy through precision machining, resulting in high strength (as evidenced by the fixing screw holes 15 of several supports on the top); and they are lightweight, with an aluminum alloy density of 2.9*10. 3 kg / m 3 It is resistant to sea wind corrosion; it is easy, convenient and beautiful to manufacture; it can tighten the fixed clamping plate 1 and the movable clamping plate 2 with multiple high-strength bolts to clamp and fix each plate 3, thereby improving the installation strength and making it more secure; it avoids the use of stainless steel or carbon steel for clamping plates, which would result in heavy weight and difficult surface treatment, and avoids the use of cast aluminum for clamping plates, which has mold casting defects, loose texture and low strength of fixing screw sleeves.

[0025] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A clamping plate for a marine engine's seawater / freshwater plate heat exchanger, characterized in that, It includes a fixed clamping plate and a movable clamping plate. A number of plates are arranged sequentially between the fixed clamping plate and the movable clamping plate. A number of clamping bolts are also provided between the fixed clamping plate and the movable clamping plate. The fixed clamping plate has a number of countersunk holes for installing the clamping bolts. Each clamping bolt passes through each plate and the movable clamping plate in sequence. The end of the clamping bolt is fitted with a nut and a washer to press the movable clamping plate. The fixed clamping plate has a seawater inlet, a seawater outlet, a freshwater outlet and a freshwater inlet.

2. The clamping plate of a marine engine seawater / freshwater plate heat exchanger according to claim 1, characterized in that, The fixed clamping plate and the movable clamping plate are made of 6061T6 aluminum alloy.

3. The clamping plate of a marine engine seawater / freshwater plate heat exchanger according to claim 1 or 2, characterized in that, The number of plates is 52-55, and a gasket is provided between any two adjacent plates. The gasket is made of EPDM rubber, and the plates and gaskets are arranged alternately and tightly.

4. The clamping plate of a marine engine seawater / freshwater plate heat exchanger according to claim 3, characterized in that, The clamping bolts are provided in eight rows, and the material of the clamping bolts is 35CrMoA. The eight clamping bolts are arranged in two rows, one above the other. Each row of clamping bolts includes four clamping bolts spaced apart. The plates and washers are provided with through holes that allow the clamping bolts to pass through. The bolt seats of the clamping bolts are fitted into the corresponding countersunk holes.

5. The clamping plate of a marine engine seawater / freshwater plate heat exchanger according to claim 3, characterized in that, The seawater inlet and outlet are arranged correspondingly on the left and right, and the freshwater outlet and inlet are arranged correspondingly on the left and right. Both the seawater inlet and outlet include a large-diameter hole, a medium-diameter hole, and a small-diameter hole. The diameters of the large-diameter hole, medium-diameter hole, and small-diameter hole decrease in that order. The small-diameter hole is located close to the plate and has a rubber sleeve inside. The front and rear ends of the rubber sleeve are respectively provided with a stepped edge one and a stepped edge two. The stepped edge one is attached to the inner side of the fixing clamping plate, and the stepped edge two is set at a point in the medium-diameter hole. The rubber sleeve is made of nitrile rubber. The fixing clamping plate has several screw holes evenly distributed circumferentially around the medium-diameter hole one.

6. The clamping plate of a marine engine seawater / freshwater plate heat exchanger according to claim 3, characterized in that, Both the freshwater outlet and the freshwater inlet are stepped holes, and both the freshwater outlet and the freshwater inlet include a large-diameter hole and a small-diameter hole. The fixing clamping plate has several screw holes evenly distributed in the circumferential direction around the small-diameter hole.

7. A clamping plate for a marine engine seawater / freshwater plate heat exchanger according to claim 1 or 2, characterized in that, At least one positioning beam is provided between the fixed clamping plate and the movable clamping plate, passing vertically through each plate.

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