Corrugated pipe type efficient heat exchange coil pipe for water ring vacuum pump

Abstract

The utility model provides a corrugated pipe type efficient heat exchange coil pipe for a water ring vacuum pump, which comprises a heat exchange water tank, and a heat exchange component is mounted in the heat exchange water tank; the heat exchange assembly comprises a heat exchange pipe, a cold water inlet pipe, a cold water outlet pipe, two mounting plates, a connecting plate, a limiting seat and a clamping groove; the heat exchange pipe is a stainless steel corrugated pipe. A gas-liquid mixture discharged by the water ring vacuum pump is discharged into the heat exchange water tank through the gas-liquid conveying pipe, gas is discharged through the exhaust pipe after gas-liquid separation of the heat exchange water tank, and working fluid is in contact with the heat exchange pipe, so that heat exchange cooling can be performed on the working fluid in the heat exchange water tank, and the working fluid in the heat exchange water tank is cooled. After the working liquid in the heat exchange water tank is cooled through heat exchange of the heat exchange pipe, the temperature is reduced, and the working liquid flows into the water ring vacuum pump through the working liquid outlet pipe to be recycled by the water ring vacuum pump.

Description

Technical Field

[0001] This utility model relates to a heat exchange coil, specifically a corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump, belonging to the technical field of heat exchange devices. Background Technology

[0002] The water ring vacuum pump contains an eccentric rotor with fixed blades. Water (liquid) is thrown against the stator wall, forming a liquid ring concentric with the stator. This liquid ring, together with the rotor blades, constitutes a variable volume. When the impeller rotates, the water, under centrifugal force, forms a rotating water ring on the pump wall. Each rotation of the impeller changes the volume between the blades, and the water between each blade reciprocates like a piston, thus achieving continuous gas suction and discharge. During pump operation, the volume space formed by the water ring and impeller blades compresses the gas, while some of the working fluid mixes with the gas. When the compressed gas and mixture reach the exhaust port, they are discharged together, forming a "gas-liquid mixture." The separated working fluid can then be returned to the pump for reuse through a pipeline.

[0003] Although the working fluid can be recycled, an increase in its temperature leads to an increase in its saturated vapor pressure. For example, the saturated vapor pressure of water is approximately 2400 Pa at 20°C, but rises to 12300 Pa at 50°C. This significantly reduces the pump's ultimate vacuum, meaning the water ring seal deteriorates. Currently, water-cooled heat exchangers are used to cool the working fluid, primarily through heat exchange between the working fluid and cooling water within the exchanger. However, existing water-cooled heat exchangers suffer from low heat exchange efficiency due to the small contact area between the heat exchange tubes and the working fluid during actual operation. For instance, in traditional heat exchange tube structures, the working fluid cannot fully envelop the tubes to form a large heat exchange interface. Therefore, a corrugated high-efficiency heat exchange coil for water ring vacuum pumps is proposed. Utility Model Content

[0004] In view of this, the present invention provides a corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: a corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump, including a heat exchange tank, wherein a heat exchange component is installed inside the heat exchange tank;

[0006] The heat exchange assembly includes a heat exchange tube, a cold water inlet pipe, a cold water outlet pipe, two mounting plates, a connecting plate, a limiting seat, and a slot.

[0007] The heat exchange tube is a stainless steel corrugated tube. The cold water inlet pipe is installed at one end of the heat exchange tube, and the cold water outlet pipe is installed at the other end of the heat exchange tube. The connecting plate is fixedly connected to the opposite surfaces of the two mounting plates. The limiting seat is fixedly connected to the outer wall of the connecting plate at equal intervals. The slot is opened on the outer wall of the limiting seat. The connecting plate is located inside the heat exchange tube, and the limiting seat is engaged with the outer wall of the heat exchange tube through the slot.

[0008] More preferably, the mounting plate is installed on the inner wall of the hot water exchange tank, and the cold water outlet pipe and the cold water inlet pipe are both located on the outside of the hot water exchange tank.

[0009] More preferably, the heat exchange tube has a wall thickness of 0.35 mm and a nominal diameter of 15 mm.

[0010] More preferably, the upper surface of the hot water tank is equipped with a working fluid inlet pipe and an exhaust pipe.

[0011] More preferably, a water ring vacuum pump is installed on the outside of the hot water tank, and a gas-liquid delivery pipe is installed at the top of the working fluid inlet pipe.

[0012] More preferably, the end of the gas-liquid delivery pipe away from the working fluid inlet pipe is connected to the outlet of the water ring vacuum pump.

[0013] More preferably, a working fluid outlet pipe is installed at the bottom of one side of the hot water tank, and a working fluid delivery pipe is installed at the end of the working fluid outlet pipe.

[0014] More preferably, the end of the working fluid delivery pipe away from the working fluid outlet pipe is connected to the return port of the water ring vacuum pump.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] In this invention, the gas-liquid mixture discharged from the water ring vacuum pump is sent to the interior of the heat exchange tank through a gas-liquid delivery pipe. After gas-liquid separation in the heat exchange tank, the gas is discharged through the exhaust pipe, while the working fluid comes into contact with the heat exchange tubes. This allows for heat exchange and cooling of the working fluid in the heat exchange tank. After being cooled by the heat exchange tubes, the working fluid in the heat exchange tank decreases in temperature and flows into the interior of the water ring vacuum pump through the working fluid outlet pipe for circulation. Compared to existing technologies, this invention uses stainless steel corrugated pipes as heat exchange tubes, which simplifies the manufacturing process and allows for direct coiling. Due to the structural characteristics of the thin-walled stainless steel corrugated hose, the contact area between cold and hot water is larger, resulting in advantages such as low labor costs, low material costs, large heat exchange area, high efficiency, and good heat exchange effect.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is an overall structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram showing the installation position of the heat exchange tube of this utility model;

[0021] Figure 3 This is a structural diagram of the heat exchange component of this utility model;

[0022] Figure 4 This is a structural diagram of the limiting seat of this utility model;

[0023] Figure 5 This is a cross-sectional view of the heat exchange tube of this utility model.

[0024] Reference numerals: 101, heat exchange assembly; 11, heat exchange tube; 12, cold water inlet pipe; 13, cold water outlet pipe; 14, mounting plate; 15, connecting plate; 16, limit seat; 17, slot; 31, hot water tank; 32, working fluid outlet pipe; 33, working fluid inlet pipe; 34, exhaust pipe; 35, gas-liquid delivery pipe; 36, water ring vacuum pump; 37, working fluid delivery pipe. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0026] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-5 As shown, this utility model embodiment provides a corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump, including a heat exchange tank 31, and a heat exchange component 101 is installed inside the heat exchange tank 31;

[0028] The heat exchange assembly 101 includes a heat exchange tube 11, a cold water inlet pipe 12, a cold water outlet pipe 13, two mounting plates 14, a connecting plate 15, a limiting seat 16, and a slot 17.

[0029] The heat exchange tube 11 is a stainless steel corrugated tube, specifically a stainless steel corrugated flexible tube. The wall thickness of the heat exchange tube 11 is 0.35mm, and the nominal diameter of the heat exchange tube 11 is 15mm. By using a stainless steel corrugated tube as the heat exchange tube 11 for heat exchange, the manufacturing process is simpler, and it can be directly coiled. Due to the structural characteristics of the thin-walled stainless steel corrugated flexible tube, the contact area between cold water and hot water is larger.

[0030] Traditional heat exchange tubes typically have a wall thickness of 1mm. Therefore, heat exchange tubes made of stainless steel corrugated tubes are thinner, resulting in better heat exchange performance. They have the advantages of lower labor costs, lower material costs, larger heat exchange area, higher efficiency, and better heat exchange effect.

[0031] The cold water inlet pipe 12 is installed at one end of the heat exchange tube 11, and the cold water outlet pipe 13 is installed at the other end of the heat exchange tube 11. Both the cold water outlet pipe 13 and the cold water inlet pipe 12 are located outside the heat exchange tank 31. Cold water can be introduced into the heat exchange tube 11 through the cold water inlet pipe 12. After heat exchange, the cold water is discharged from the cold water outlet pipe 13.

[0032] The connecting plate 15 is fixedly connected to the opposite surfaces of the two mounting plates 14. The limiting seat 16 is fixedly connected to the outer side wall of the connecting plate 15 at equal intervals. The slot 17 is opened on the outer side wall of the limiting seat 16. The connecting plate 15 is located inside the heat exchange tube 11. The limiting seat 16 is engaged with the outer side wall of the heat exchange tube 11 through the slot 17. The mounting plate 14 is installed on the inner side wall of the heat exchange tank 31. Through the cooperation of the connecting plate 15, the mounting plate 14, the limiting seat 16 and the slot 17, a limiting mechanism can be formed to limit the position of the heat exchange tube 11 and enhance the stability of the structure.

[0033] In one embodiment, a working fluid inlet pipe 33 and an exhaust pipe 34 are respectively installed on the upper surface of the hot water tank 31. A water ring vacuum pump 36 is installed outside the hot water tank 31. A gas-liquid delivery pipe 35 is installed at the top of the working fluid inlet pipe 33. The end of the gas-liquid delivery pipe 35 away from the working fluid inlet pipe 33 is connected to the outlet of the water ring vacuum pump 36. When the water ring vacuum pump 36 is working, the gas-liquid mixture discharged can be discharged into the interior of the hot water tank 31 through the gas-liquid delivery pipe 35. After passing through the gas-liquid separation of the hot water tank 31, the gas is discharged through the exhaust pipe 34.

[0034] Since the interior of the hot water tank 31 is filled with heat exchange tubes 11 and the inlet of the heat exchange tubes 11 is connected to chilled water, the working fluid in the hot water tank 31 can be cooled by heat exchange. After the working fluid in the hot water tank 31 is cooled by heat exchange tubes 11, the temperature decreases, thereby keeping the temperature of the working fluid within a reasonable range for circulation by the water ring vacuum pump 36.

[0035] In one embodiment, a working fluid outlet pipe 32 is installed at the bottom of one side of the hot water tank 31, and a working fluid delivery pipe 37 is installed at the end of the working fluid outlet pipe 32. The end of the working fluid delivery pipe 37 away from the working fluid outlet pipe 32 is connected to the return port of the water ring vacuum pump 36. After the working fluid in the hot water tank 31 is cooled by heat exchange through the heat exchange pipe 11, the temperature decreases, and then flows into the interior of the water ring vacuum pump 36 through the working fluid outlet pipe 32 for the water ring vacuum pump 36 to circulate.

[0036] In operation, the gas-liquid mixture discharged by the water ring vacuum pump 36 is discharged into the heat exchange tank 31 through the gas-liquid delivery pipe 35. After gas-liquid separation in the heat exchange tank 31, the gas is discharged through the exhaust pipe 34. The working fluid comes into contact with the heat exchange tube 11. Since the inlet of the heat exchange tube 11 is connected to chilled water, the working fluid in the heat exchange tank 31 can be cooled by heat exchange. After the working fluid in the heat exchange tank 31 is cooled by heat exchange through the heat exchange tube 11, the temperature decreases and flows into the water ring vacuum pump 36 through the working fluid outlet pipe 32 for the water ring vacuum pump 36 to circulate.

[0037] Compared with the existing technology, this utility model uses stainless steel corrugated pipe as heat exchange tube 11 for heat exchange, which simplifies the manufacturing process and can be directly coiled. Due to the structural characteristics of thin-walled stainless steel corrugated hose, the contact area between cold water and hot water is larger, thus having the advantages of low labor cost, reduced material cost, large heat exchange area, high efficiency, and good heat exchange effect.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A corrugated high-efficiency heat exchange coil for a water ring vacuum pump, comprising a heat exchange tank (31), characterized in that: The heat exchange tank (31) is equipped with a heat exchange component (101). The heat exchange assembly (101) includes a heat exchange tube (11), a cold water inlet pipe (12), a cold water outlet pipe (13), two mounting plates (14), a connecting plate (15), a limiting seat (16), and a slot (17). The heat exchange tube (11) is a stainless steel corrugated tube. The cold water inlet pipe (12) is installed at one end of the heat exchange tube (11), and the cold water outlet pipe (13) is installed at the other end of the heat exchange tube (11). The connecting plate (15) is fixedly connected to the opposite surfaces of the two mounting plates (14). The limiting seat (16) is fixedly connected to the outer side wall of the connecting plate (15) at equal intervals. The slot (17) is opened on the outer side wall of the limiting seat (16). The connecting plate (15) is located inside the heat exchange tube (11). The limiting seat (16) is engaged with the outer side wall of the heat exchange tube (11) through the slot (17).

2. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 1, characterized in that: The mounting plate (14) is installed on the inner wall of the hot water exchange tank (31), and the cold water outlet pipe (13) and the cold water inlet pipe (12) are both located outside the hot water exchange tank (31).

3. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 1, characterized in that: The heat exchange tube (11) has a wall thickness of 0.35 mm and a nominal diameter of 15 mm.

4. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 1, characterized in that: The upper surface of the hot water tank (31) is respectively equipped with a working fluid inlet pipe (33) and an exhaust pipe (34).

5. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 4, characterized in that: The external water exchange tank (31) is equipped with a water ring vacuum pump (36), and the top of the working fluid inlet pipe (33) is equipped with a gas-liquid delivery pipe (35).

6. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 5, characterized in that: The end of the gas-liquid delivery pipe (35) away from the working fluid inlet pipe (33) is connected to the outlet of the water ring vacuum pump (36).

7. A high-efficiency corrugated heat exchange coil for a water ring vacuum pump according to claim 6, characterized in that: A working fluid outlet pipe (32) is installed on one side of the bottom of the hot water tank (31), and a working fluid delivery pipe (37) is installed at the end of the working fluid outlet pipe (32).

8. The corrugated tube type high-efficiency heat exchange coil for a water ring vacuum pump according to claim 7, characterized in that: The end of the working fluid delivery pipe (37) away from the working fluid outlet pipe (32) is connected to the return port of the water ring vacuum pump (36).

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