Three-cylinder single-action high-temperature anti-corrosion diaphragm pump cooling device

Abstract

The utility model discloses a three-cylinder single-action high-temperature anti-corrosion diaphragm pump cooling device and belongs to the technical field of diaphragm pump cooling. The heat exchanger comprises an outer shell and an inner pipe, the outer shell is arranged outside the inner pipe in a sleeved mode, the two ends of the outer shell are connected with the inner pipe, a cooling cavity is formed between the outer shell and the inner pipe, spiral fins are arranged on the outer wall of the inner pipe, the spiral fins are located in the cooling cavity, and the spiral fins are arranged in the cooling cavity. A cooling water inlet and a cooling water outlet are formed in the positions, close to the two ends, of the outer shell respectively, and a parallel plate type double-unit static mixer is arranged on the portion, on one side of the cooling water inlet, in the inner pipe. The high-temperature anti-corrosion diaphragm pump is suitable for the operation condition of the high-temperature anti-corrosion diaphragm pump, and can quickly reduce the medium temperature, reduce the reaction rate and reduce the corrosion degree of an overflowing part.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm pump cooling, and in particular relates to a three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device. Background Art

[0002] In order to prevent the heat of the high-temperature medium from being transferred to the diaphragm and other rubber parts, the high-temperature diaphragm pump needs to set an isolation device and a cooling device between the inlet and outlet devices and the diaphragm chamber to ensure that the medium entering the diaphragm chamber remains within the allowable temperature range, thereby protecting the diaphragm operating environment.

[0003] The traditional cooling device for high-temperature diaphragm pumps is a single-tube shell and tube structure. The inner tube is a smooth straight tube, which is easy to clean. However, the heat transfer area per unit volume is small, and the flow speed of the high-temperature medium in the tube and the cooling water outside the tube is slow and the flow pattern is flat. The heat transfer coefficient is low, resulting in poor cooling effect per unit volume. In order to meet the thermal design requirements, a large-volume cooling device is usually required, which has high requirements on on-site plant space, high production costs, and high maintenance difficulty.

[0004] In addition, the medium of the high-temperature anti-corrosion diaphragm pump is corrosive, and the cooling device usually needs to use expensive metal materials such as bidirectional stainless steel. The volume of the cooling device is not only limited by the on-site plant space, but also has a significant impact on the cost of the high-temperature anti-corrosion diaphragm pump. The reaction speed of the medium is positively correlated with the temperature. The medium needs to quickly exchange heat when entering the cooling device to reduce the temperature of the medium as soon as possible, so as to reduce the reaction rate and reduce the degree of corrosion of the flow-through parts. Utility Model Content

[0005] The utility model aims at the above-mentioned problems, makes up for the deficiencies of the prior art, and provides a three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device; the utility model is suitable for the operating conditions of the high-temperature anti-corrosion diaphragm pump, can quickly reduce the medium temperature, reduce the reaction rate, and reduce the degree of corrosion of the flow-through parts.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions.

[0007] The utility model provides a three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device, characterized in that it comprises an outer shell and an inner tube, the outer shell is sleeved on the outside of the inner tube and connected to the inner tube at both ends, a cooling chamber is formed between the outer shell and the inner tube, spiral fins are arranged on the outer wall of the inner tube, the spiral fins are located in the cooling chamber, a cooling water inlet and a cooling water outlet are respectively arranged near both ends on the outer shell, and a parallel plate double-unit static mixer is arranged in the inner tube on one side of the cooling water inlet.

[0008] Furthermore, flanges are provided at both ends of the outer shell, and flanges are provided at both ends and the middle of the inner tube corresponding to the two ends of the outer shell. The flanges at both ends of the outer shell are connected to the flange in the middle of the inner tube, and the flange at the end of the inner tube close to the cooling water inlet is used to connect with the isolation device, and the flange at the end of the inner tube close to the cooling water outlet is used to connect with the bent pipe connected to the diaphragm chamber.

[0009] Furthermore, the inner tube on the cooling water inlet side is connected to the flange of the outer shell by bolts, spring washers and nuts, and is sealed by a sealing ring.

[0010] Furthermore, the inner tube on the cooling water outlet side is connected to the flange of the outer shell by bolts and spring washers, and is sealed by an O-ring.

[0011] Furthermore, the bolts are pre-welded on the flange of the inner tube.

[0012] Furthermore, the parallel plate type dual-unit static mixer is a tubular structure with an end plate on the outside, and the tube of the parallel plate type dual-unit static mixer includes two groups of parallel thin plate units, each of the parallel thin plate units includes at least five mutually parallel thin plates, and the two groups of parallel thin plate units are perpendicular to each other.

[0013] Furthermore, the end plate of the parallel plate type dual-unit static mixer is clamped on the outer side of the flange at the end of the inner tube close to the cooling water inlet.

[0014] Furthermore, the inner tube and the parallel plate dual-unit static mixer are sealed by a winding gasket.

[0015] The beneficial effects of the utility model.

[0016] The utility model can improve the heat transfer area per unit volume of the cooling device while reducing the cross-sectional area of ​​the cooling water flow channel, improving the cooling water flow rate, increasing the heat conduction coefficient on the cooling water side, and improving the heat exchange capacity of the device, which can effectively reduce the volume of the cooling device, save on-site space, and reduce the production cost of the cooling device; it can improve the heat exchange capacity of the upstream of the cooling device, so that the medium temperature drops faster when entering the cooling device, and the chemical reaction rate of the medium is reduced earlier, which is more suitable for the working conditions of the high-temperature anti-corrosion diaphragm pump; it can prevent the heat of the high-temperature medium that cannot be completely isolated by the isolation device from being transferred to rubber parts such as the diaphragm; it has higher heat transfer efficiency, so that the medium temperature drops faster when entering the cooling device, and the chemical reaction rate of the medium is reduced earlier, which is more suitable for the working conditions of the high-temperature anti-corrosion diaphragm pump; it has a simple structure, is easy to maintain, and is convenient to disassemble, maintain, and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0018] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0019] Figure 2 This utility model Figure 1 A is an enlarged structural diagram of FIG.

[0020] Figure 3 This utility model Figure 1 Schematic diagram of the enlarged structure at B.

[0021] Figure 4 It is a structural schematic diagram of a parallel plate double-unit static mixer of the utility model.

[0022] Markings in the figure: 1 is the outer shell, 2 is the inner tube, 3 is the cooling chamber, 4 is the spiral fin, 5 is the cooling water inlet, 6 is the cooling water outlet, 7 is the parallel plate double-unit static mixer, 8 is the flange, 9 is the isolation device, 10 is the elbow, 11 is the sealing ring, 12 is the O-ring, 13 is the end plate, 14 is the thin plate, and 15 is the winding pad. DETAILED DESCRIPTION

[0023] As shown in the accompanying drawings, this embodiment provides a three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device, including an outer shell 1 and an inner tube 2. The outer shell 1 and the inner tube 2 are both straight tubes. The outer shell 1 is sleeved on the outside of the inner tube 2. A cooling chamber 3 is formed between the outer shell 1 and the inner tube 2. A cooling water inlet 5 and a cooling water outlet 6 are respectively provided near both ends of the outer shell 1. The high-temperature medium flows in the inner tube 2; the cooling water flows in the cooling chamber 3 to absorb the heat transmitted from the isolation device 9.

[0024] The cooling device needs to be connected to the cooling water source during operation, and the temperature of the medium in the cooling device is adjusted by adjusting the cooling water volume to ensure that the temperature of the medium contacting the diaphragm is within a reasonable range.

[0025] Both ends of the outer shell 1 are provided with flanges 8, and both ends and the middle of the inner tube 2 are provided with flanges 8 corresponding to both ends of the outer shell 1, and the flanges 8 at both ends of the outer shell 1 are connected to the flange 8 in the middle of the inner tube 2. The inner tube 2 on the cooling water inlet 5 side is connected to the flange 8 of the outer shell 1 by bolts, spring washers and nuts, and is sealed by a sealing ring 11; the inner tube 2 on the cooling water outlet 6 side is connected to the flange 8 of the outer shell 1 by bolts and spring washers, and is sealed by an O-ring 12. Bolts are pre-welded on the flange 8 of the inner tube 2 to facilitate positioning of the outer shell 1 during installation, improve the installation accuracy of the cooling device, improve the installation efficiency, and reduce the possibility of cooling water leakage after installation.

[0026] The flange 8 at the end of the inner tube 2 close to the cooling water inlet 5 is used to connect with the isolation device 9, and the flange 8 at the end of the inner tube 2 close to the cooling water outlet 6 is used to connect with the elbow 10 connected to the diaphragm chamber.

[0027] The cooling water inlet 5 is near the isolation device 9, and the cooling water flow direction is the same as the medium heat transfer direction. Compared with other flow modes, the temperature difference on the medium inlet side is larger, and the heat transfer efficiency is higher, so that the medium temperature drops faster when entering the cooling device, and the chemical reaction rate of the medium is reduced earlier, which is more suitable for the working conditions of high-temperature anti-corrosion diaphragm pumps. The cooling device is arranged behind the isolation device 9, which can absorb the heat transmitted from the isolation device 9 and prevent the heat of the high-temperature medium that cannot be completely isolated by the isolation device 9 from being transferred to rubber parts such as the diaphragm.

[0028] Spiral fins 4 are provided on the outer wall of the inner tube 2, and the spiral fins 4 are located in the cooling chamber 3. The spiral fins 4 increase the heat transfer area and improve the heat conduction rate of the inner tube 2. The spiral structure can reduce the cross-sectional area of ​​the cooling water flow channel, increase the flow rate and produce a turbulent effect, increase the heat transfer coefficient on the cold water side, and enhance the heat transfer efficiency.

[0029] A parallel plate type double unit static mixer 7 is arranged on the cooling water inlet side in the inner tube 2. The inner tube 2 and the parallel plate type double unit static mixer 7 are sealed by a winding gasket 15.

[0030] The parallel plate double-unit static mixer 7 is a tubular structure with an end plate 13 on the outside. During installation, the end plate 13 of the parallel plate double-unit static mixer 7 is stuck on the outside of the flange 8 at the end of the inner tube 2 close to the cooling water inlet 5, so that the end plate 13 is clamped between the flange 8 of the inner tube 2 and the flange 8 of the isolation device 9.

[0031] The parallel plate type dual-unit static mixer 7 includes two groups of parallel thin plate units in the tube, each parallel thin plate unit includes at least five parallel thin plates 14, and the two groups of parallel thin plate units are perpendicular to each other. The medium passes through the parallel thin plate units in the pipeline and is cut multiple times in a short period of time, which increases the contact area, generates a large number of tiny eddies, improves the heat transfer coefficient, enhances the heat transfer efficiency, makes the medium temperature drop faster when entering the cooling device, reduces the chemical reaction rate of the medium earlier, and is more suitable for the working conditions of the high-temperature anti-corrosion diaphragm pump. In addition, the parallel plate type dual-unit static mixer 7 is independent of the inner tube 2, has a simple structure, is easy to maintain, and is convenient to disassemble, maintain, and clean.

[0032] It can be understood that the above specific description of the utility model is only used to illustrate the utility model and is not limited to the technical solution described in the implementation mode of the utility model. Ordinary technicians in the field should understand that the utility model can still be modified or replaced by equivalents to achieve the same technical effect; as long as the use requirements are met, they are within the protection scope of the utility model.

Claims

1. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device, characterized in that: The invention comprises an outer shell (1) and an inner tube (2), wherein the outer shell (1) is sleeved on the outside of the inner tube (2) and connected to the inner tube (2) at both ends, a cooling chamber (3) is formed between the outer shell (1) and the inner tube (2), a spiral fin (4) is provided on the outer wall of the inner tube (2), and the spiral fin (4) is located in the cooling chamber (3), a cooling water inlet (5) and a cooling water outlet (6) are respectively provided near both ends of the outer shell (1), and a parallel plate type double-unit static mixer (7) is provided in the inner tube (2) on one side of the cooling water inlet (5).

2. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 1, characterized in that: Both ends of the outer shell (1) are provided with flanges (8), and both ends and the middle of the inner tube (2) are provided with flanges (8) corresponding to the two ends of the outer shell (1). The flanges (8) at both ends of the outer shell (1) are connected to the flange (8) in the middle of the inner tube (2). The flange (8) at the end of the inner tube (2) close to the cooling water inlet (5) is used to connect to the isolation device (9), and the flange (8) at the end of the inner tube (2) close to the cooling water outlet (6) is used to connect to the elbow (10) connected to the diaphragm chamber.

3. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 2, characterized in that: The inner tube (2) on the cooling water inlet (5) side is connected to the flange (8) of the outer shell (1) via bolts, spring washers and nuts, and is sealed via a sealing ring (11).

4. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 3, characterized in that: The inner tube (2) on the cooling water outlet (6) side is connected to the flange (8) of the outer shell (1) via bolts and spring washers, and is sealed via an O-ring (12).

5. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 4, characterized in that: The bolts are pre-welded on the flange (8) of the inner tube (2).

6. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 2, characterized in that: The parallel plate type dual-unit static mixer (7) is a tubular structure with an end plate (13) on the outside. The parallel plate type dual-unit static mixer (7) includes two groups of parallel thin plate units in the tube, each of the parallel thin plate units includes at least five mutually parallel thin plates (14), and the two groups of parallel thin plate units are perpendicular to each other.

7. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 6, characterized in that: The end plate (13) of the parallel plate type dual-unit static mixer (7) is clamped on the outside of the flange (8) at the end of the inner tube (2) close to the cooling water inlet (5).

8. A three-cylinder single-acting high-temperature anti-corrosion diaphragm pump cooling device according to claim 1, characterized in that: The inner tube (2) and the parallel plate type dual-unit static mixer (7) are sealed via a winding gasket (15).

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