Centrifugal conveying system

Abstract

The utility model relates to the technical field of chemical conveying, in particular to a centrifugal conveying system which comprises a centrifugal pump, a heat exchanger and a vortex tube, and the centrifugal pump is provided with a mechanical seal, a heat tracing jacket air inlet pipe and a heat tracing jacket outlet pipe. The heat exchanger is provided with a mechanical seal flushing fluid inlet pipe, a mechanical seal flushing fluid outlet pipe and a heat exchanger shell pass inlet pipe; the heat exchanger shell pass outlet pipe, the mechanical seal flushing fluid inlet pipe and the mechanical seal flushing fluid outlet pipe are connected with the mechanical seal; the vortex tube is provided with a compressed gas inlet, a hot end tube and a cold end tube, an outlet of the hot end tube is communicated with the heat tracing jacket gas inlet tube, and an outlet of the cold end tube is communicated with the heat exchanger shell pass inlet tube. The vortex tube is used as a heat source and a cold source generator, and dry compressed air is used as an energy source, so that the heat exchange efficiency is effectively improved, the cleanliness is high, impurities and condensed water are not generated, equipment is not corroded, meanwhile, the length of a cold and heat source pipeline is shortened, the influence of environmental factors on airflow during transmission in the pipeline is reduced, the cost is reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical conveying technology, and in particular to a centrifugal conveying system. Background Technology

[0002] Centrifugal pumps are commonly used chemical power equipment that transport liquids through the centrifugal force generated by the rotation of an impeller. Centrifugal pumps are equipped with a mechanical seal, a crucial component used to prevent liquid leakage and the entry of external impurities into the pump. The main function of the mechanical seal is to ensure the pump's sealing performance during operation, preventing liquid leakage, and protecting internal components such as bearings and gears from external contamination.

[0003] In chemical production processes, mechanical seal flushing fluid needs to be continuously supplied to cool the mechanical seal. When the supplied medium is a solution that is prone to crystallization, a pump casing jacket needs to be designed to fill the pump casing jacket with steam or heat exchange medium such as heat transfer oil or hot water to keep the supplied medium warm. In addition, a heat exchange device needs to be installed to cool the supplied medium (mechanical seal flushing fluid) after heat exchange, thereby realizing the recycling of the supplied medium.

[0004] Therefore, a centrifugal pump typically requires the installation of steam or heat tracing pipelines and cooling water pipelines. The steam or heat tracing pipelines supply heated steam to the pump casing jacket to maintain the temperature of the transported medium, while the cooling water pipelines cool the mechanical seal flushing fluid after heat exchange. Existing centrifugal pump process pipelines are cumbersome and costly, and the steam or heat exchange medium is susceptible to environmental factors during pipeline transmission. Furthermore, traditional heat sources and heat exchange media, such as the heat tracing jacket, usually use steam or hot water as the heat source. During long-term operation, condensation accumulates in the jacket, affecting not only the insulation effect but also causing corrosion to the pump casing. Meanwhile, mechanical seal flushing fluid heat exchange devices typically use circulating water or cooling water as the heat exchange medium, resulting in a smaller temperature difference between the two media exchanging heat and relatively poor heat exchange efficiency. Utility Model Content

[0005] In order to solve the above-mentioned technical problems in the prior art, the present invention provides a technical solution to solve the above-mentioned technical problems as follows:

[0006] This utility model provides a centrifugal conveying system, including a centrifugal pump, a heat exchanger, and a vortex tube. The centrifugal pump is equipped with a mechanical seal, a heat tracing jacket inlet pipe, and a heat tracing jacket outlet pipe. The heat exchanger is equipped with a mechanical seal flushing fluid inlet pipe, a mechanical seal flushing fluid outlet pipe, a heat exchanger shell-side inlet pipe, and a heat exchanger shell-side outlet pipe. The mechanical seal flushing fluid inlet pipe and the mechanical seal flushing fluid outlet pipe are connected to the mechanical seal. The vortex tube is equipped with a compressed gas inlet, a hot end pipe, and a cold end pipe. The outlet of the hot end pipe is connected to the heat tracing jacket inlet pipe, and the outlet of the cold end pipe is connected to the heat exchanger shell-side inlet pipe.

[0007] The technical solution provided by this utility model provides a heat source (high-temperature gas) for the pump casing jacket through the hot end tube of the vortex tube, and a cold source (low-temperature gas) for the heat exchanger shell side through the cold end tube. The large temperature difference between the heat source and the cold source after energy separation by the vortex tube can effectively improve the heat exchange efficiency. It can also effectively shorten the length of the hot and cold source pipelines, reduce the influence of environmental factors on the airflow during transmission in the pipeline, reduce costs, and improve safety. Moreover, the hot and cold sources are converted from dry compressed air, which has high cleanliness and produces no impurities or condensate, does not corrode the equipment, and greatly ensures that the equipment will not be blocked, thus ensuring efficient and stable operation of the equipment.

[0008] Based on the above technical solution, the present invention can also be improved in the following ways:

[0009] Furthermore, an inlet valve is provided at the compressed gas inlet.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is that the compressed gas flow rate at the inlet can be adjusted by adjusting the opening of the inlet valve, thereby changing the outlet flow rate of the cold and hot ends of the vortex tube, so as to ensure the heat preservation effect of the heat source and the heat exchange effect of the cold source.

[0011] Furthermore, a hot-end valve is provided at the outlet of the hot-end pipe, and a cold-end valve is provided at the outlet of the cold-end pipe.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the hot end valve enables control of the heat source flow rate and the opening and closing of the outlet at the hot end, and the cold end valve enables control of the cold source flow rate and the opening and closing of the outlet at the cold end.

[0013] Furthermore, the outlet of the hot end pipe is connected to the inlet pipe of the heat tracing jacket via a hot end outlet pipeline, the outlet of the cold end pipe is connected to the inlet pipe of the heat exchanger shell side via a cold end outlet pipeline, the compressed gas inlet is connected to the compressed gas storage device via an inlet pipeline, and the outer walls of the hot end outlet pipeline, the cold end outlet pipeline, and the inlet pipeline are provided with a heat insulation layer.

[0014] The beneficial effects of adopting the above-mentioned further technical solutions are: reducing heat loss in the inlet pipeline, hot end outlet pipeline, and cold end outlet pipeline, preventing the gas temperature flowing into or out of the vortex tube from changing due to changes in ambient temperature, which would cause temperature fluctuations in the heat source flowing into the heat tracing jacket or the cold source flowing into the shell side of the heat exchanger, thereby affecting the insulation or heat exchange effect.

[0015] Furthermore, both the hot end outlet pipeline and the cold end outlet pipeline are equipped with temperature gauges.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is that: the temperature gauge is used to detect the temperature in the outlet pipes of the cold and hot ends of the vortex tube. When the temperature of the cold and hot ends changes, the temperature of the cold and hot ends of the vortex tube is maintained within the normal temperature range by adjusting the hot end valve, the cold end valve and / or the inlet valve.

[0017] Furthermore, pressure gauges are installed on the inlet pipeline, the hot-end outlet pipeline, and the cold-end outlet pipeline.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The pressure gauge is used to detect the pressure inside the pipeline. By observing the numerical difference between the pressure gauge at the inlet pipeline and the pressure gauge at the outlet pipeline of the cold and hot ends when the fluid flows through the vortex tube, the pressure drop during the flow of gas in the vortex tube can be obtained, and thus the flow state of the gas in the vortex tube can be obtained. If the values ​​of the pressure gauge at the inlet pipeline and the pressure gauge at the outlet pipeline of the cold and hot ends are stable, the vortex tube is in normal operation. However, if the pressure drop between the pressure gauge at the inlet pipeline and the pressure gauge at the outlet pipeline of the cold and hot ends is too large, it indicates that there is a blockage inside the vortex tube, and it needs to be cleaned.

[0019] Furthermore, the vortex tube also includes an annular air intake chamber, a flow channel, and a vortex chamber connected in sequence, the annular air intake chamber being connected to the compressed gas inlet; the diameter of the hot end tube is larger than the diameter of the cold end tube.

[0020] The beneficial effects of adopting the above-mentioned further technical solution are as follows: After the room-temperature dry compressed gas enters the annular intake chamber from the compressed gas inlet, the gas expands and enters the vortex chamber along the tangential direction of the flow channel outlet, forming a high-speed free vortex. Since the diameter of the hot end tube is larger than that of the cold end tube, while the gas is rotating, most of the high-speed airflow flows along the tube wall of the hot end tube towards the hot end outlet. During this process, the friction between the airflow and the tube wall causes the airflow temperature to gradually increase. Due to the action of the hot end valve at the outlet of the hot end tube, only a portion of the fluid flows out of the hot end through the gap of the hot end valve. At this time, the airflow temperature reaches its maximum, thus forming a heat source. The remaining fluid flow is obstructed, forming a reverse vortex at the hot end valve and flowing along the center of the hot end tube towards the outlet of the cold end tube. During this process, the vortex at the center of the hot end tube rotates in the opposite direction to the vortex at the tube wall, spontaneously generating energy separation. The airflow temperature at the center gradually decreases, reaching its lowest point when it reaches the outlet of the cold end tube, thus forming a cold source.

[0021] Furthermore, the hot-end valve is disposed inside the hot-end tube, and the hot-end valve is connected to the hot-end tube by a thread.

[0022] Furthermore, the hot-end valve and the hot-end pipe are connected by a 60° tapered thread.

[0023] The beneficial effect of adopting the above-mentioned further technical solution is that by adjusting the thread entry depth, the hot gas flow rate at the outlet of the hot end tube can be controlled, thereby changing the gas flow temperature at the hot end outlet.

[0024] Furthermore, a first pressure gauge and a first temperature gauge are installed on the air inlet pipe of the heat tracing jacket, and a second pressure gauge and a second temperature gauge are installed on the shell-side inlet pipe of the heat exchanger.

[0025] The beneficial effect of adopting the above-mentioned further technical solution is that: by observing the flow of hot and cold air from the hot and cold ends of the vortex tube and recording the initial values ​​of the first pressure gauge, the second pressure gauge, the first temperature gauge, and the second temperature gauge, the flow state of the gas in the vortex tube can be obtained; if the values ​​of the first pressure gauge, the second pressure gauge, the first temperature gauge, and the second temperature gauge are basically consistent with the initial values ​​and are stable, the vortex tube is operating normally; however, if the values ​​of the first temperature gauge and the second temperature gauge are basically consistent with the initial values, but the values ​​of the first pressure gauge and the second pressure gauge differ significantly from the initial values, it indicates that the vortex tube is blocked and needs to be cleaned.

[0026] Compared with the prior art, the present invention has the following technical effects:

[0027] The centrifugal conveying system provided by this utility model adopts a vortex tube and utilizes the energy separation principle of the vortex tube to separate room temperature dry compressed gas into high temperature gas and low temperature gas. The hot end tube of the vortex tube provides a heat source (high temperature gas) for the pump casing jacket, and the cold end tube provides a cold source (low temperature gas) for the heat exchanger shell side. The large temperature difference between the heat source and the cold source after energy separation by the vortex tube can effectively improve the heat exchange efficiency.

[0028] It effectively shortens the length of cold and heat source pipelines, reduces the impact of environmental factors on airflow transmission in pipelines, and at the same time reduces costs and improves safety;

[0029] The heat source and cold source are converted from dry compressed air. Compressed air is easy and economical to prepare. Compared with other compressed gases, compressed air leakage will not cause harm to the surrounding environment and personal safety. In addition, compressed air has high cleanliness, with no impurities or condensation, and will not corrode the equipment, greatly ensuring that the equipment will not be blocked and ensuring the efficient and stable operation of the equipment. Attached Figure Description

[0030] Figure 1 This diagram shows a schematic representation of the centrifugal conveying system according to an embodiment of the present invention.

[0031] Figure 2 This diagram shows a structural schematic of the centrifugal conveying system according to another embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram of the vortex tube structure according to an embodiment of the present invention;

[0033] Figure 4 This is a top view of the vortex tube according to an embodiment of the present utility model;

[0034] Figure 5 for Figure 4 A cross-sectional view along the BB direction;

[0035] Figure 6 This is a front view of the vortex tube according to an embodiment of the present invention;

[0036] Figure 7 for Figure 6 A cross-sectional view along the AA direction;

[0037] Figure label:

[0038] 1. Centrifugal pump; 11. Mechanical seal; 12. Heat tracing jacket inlet pipe; 122. First pressure gauge; 123. First temperature gauge; 13. Heat tracing jacket outlet pipe; 2. Heat exchanger; 21. Mechanical seal flushing fluid inlet pipe; 22. Mechanical seal flushing fluid outlet pipe; 23. Heat exchanger shell-side inlet pipe; 232. Second pressure gauge; 233. Second temperature gauge; 24. Heat exchanger shell-side outlet pipe; 3. Vortex tube; 31. Compressed gas inlet; 311. Inlet pipeline; 32. Annular inlet chamber; 33. Flow channel; 34. Vortex chamber; 35. Hot end pipe; 351. Hot end valve; 36. Cold end pipe. Detailed Implementation

[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0040] See Figure 1-7A centrifugal conveying system includes a centrifugal pump 1, a heat exchanger 2, and a vortex tube 3. The centrifugal pump is equipped with a mechanical seal 11, a pump casing jacket, and a heat tracing jacket inlet pipe 12 and a heat tracing jacket outlet pipe 13 connected to the pump casing jacket. The heat exchanger 2 includes a tube side and a shell side, and further includes a mechanical seal flushing fluid inlet pipe 21 and a mechanical seal flushing fluid outlet pipe 22 connected to the tube side, and a heat exchanger shell side inlet pipe 23 and a heat exchanger shell side outlet pipe 24 connected to the shell side. The conveying medium (mechanical seal flushing fluid) in the tube side and the low-temperature medium in the shell side conduct heat to achieve cooling of the conveying medium, so as to facilitate the recycling of the conveying medium (mechanical seal flushing fluid). The mechanical seal... The flushing fluid inlet pipe 21 and the mechanical seal flushing fluid outlet pipe 22 are connected to the mechanical seal 11 to achieve cooling of the mechanical seal 11. The vortex tube 3 includes a compressed gas inlet 31, an annular air inlet chamber 32, a flow channel 33, a vortex chamber 34, a hot end pipe 35, and a cold end pipe 36. The diameter of the hot end pipe 35 is larger than that of the cold end pipe 36. The outlet of the hot end pipe 35 is connected to the heat tracing jacket air inlet pipe 12 to transport high-temperature gas to the pump casing jacket through the heat tracing jacket air inlet pipe 12 to achieve heat preservation of the mechanical seal flushing fluid. The outlet of the cold end pipe 36 is connected to the heat exchanger shell side inlet pipe 23 to achieve heat exchange and cooling of the mechanical seal flushing fluid after heat exchange.

[0041] An inlet valve is provided at the compressed gas inlet 31. By adjusting the opening of the inlet valve, the flow rate of compressed gas at the compressed gas inlet 31 can be adjusted, thereby changing the outlet flow rates of the cold and hot ends of the vortex tube 3. This ensures the heat insulation effect of the heat source and the heat exchange effect of the cold source. For example, increasing the valve opening increases the compressed air inlet flow rate, which in turn increases the flow rate at the cold and hot end outlets. Specifically, by controlling the flow rate of the high-temperature gas flowing into the pump casing jacket (outflow from the hot end pipe 35) or the low-temperature gas flowing into the shell side of the heat exchange device (outflow from the cold end pipe 36), the heat insulation or heat exchange effect can be affected. This prevents temperature changes between the high-temperature and low-temperature gas streams separated by the vortex tube 3 due to the influence of ambient temperature on the compressed gas, giving the vortex tube a more flexible operating range. It can be divided into the following three operating conditions:

[0042] (1) For the working condition where the temperature rise of the jacket heat tracing has no effect, when the temperature of the compressed air rises in summer, the temperature of the cold end outlet will also rise, and the temperature difference with the mechanical seal flushing fluid will decrease, and the heat exchange efficiency in the heat exchanger 2 will deteriorate accordingly. At this time, without considering adjusting the hot end regulating valve 352, the flow rate of the cold end outlet can be increased by increasing the opening of the inlet valve, so that more heat of the mechanical seal flushing fluid can be removed per unit time during heat exchange in the heat exchanger, thus ensuring the heat exchange effect of the heat exchanger.

[0043] (2) For working conditions that require a constant heat tracing temperature, when the temperature of compressed air decreases in winter, the temperature of the hot end outlet also decreases, and the heat preservation effect of the jacketed heat tracing deteriorates. At this time, by increasing the opening of the inlet valve, the flow rate of the hot end outlet can be increased, which can bring more heat per unit time and thus ensure the effect of the jacketed heat tracing.

[0044] (3) For working conditions that require a constant heat tracing temperature, when the temperature of compressed air rises in summer, the temperature of the hot end outlet also rises. The enhanced heat tracing effect may affect the stability of the working conditions. Without considering adjusting the hot end regulating valve 352, the opening of the inlet valve is reduced to decrease the hot end outlet flow rate, thereby reducing the heat brought by the jacket heat tracing per unit time, thus ensuring the stability of the working conditions.

[0045] A hot-end valve 351 is installed at the outlet of the hot-end pipe 35 to control the heat source flow rate and the opening and closing of the outlet. A cold-end valve is installed at the outlet of the cold-end pipe 36 to control the cold source flow rate and the opening and closing of the outlet. When it is necessary to repair the vortex tube 3, the hot-end valve 351 and the cold-end valve are closed to prevent the hot air flow in the jacket heat tracing and the cold air flow in the shell side of the heat exchanger 2 from backflowing and burning or freezing the maintenance personnel.

[0046] The hot-end valve 351 is disposed inside the hot-end tube 35, that is, the hot-end tube 35 has the hot-end valve 351 built in. The hot-end valve 351 and the hot-end tube 35 are connected by a thread. The hot-end valve 351 and the hot-end tube 35 are connected by a 60° tapered thread. By adjusting the thread depth, the hot air flow rate at the outlet of the hot-end tube 35 can be controlled, thereby changing the airflow temperature at the hot-end outlet.

[0047] The outlet of the hot end pipe 35 is connected to the inlet pipe 12 of the heat tracing jacket via the hot end outlet pipe. The outlet of the cold end pipe 36 is connected to the inlet pipe 23 of the heat exchanger shell side via the cold end outlet pipe. The compressed gas inlet 31 is connected to the compressed gas storage device via the inlet pipe 311. The outer walls of the hot end outlet pipe, the cold end outlet pipe, and the inlet pipe 311 are provided with a heat insulation layer to reduce heat loss in the inlet pipe, the hot end outlet pipe, and the cold end outlet pipe, and to prevent the temperature of the gas flowing into or out of the vortex tube from changing due to changes in the ambient temperature, which would cause temperature fluctuations in the heat source flowing into the heat tracing jacket or the cold source flowing into the heat exchanger shell side, thereby affecting the heat insulation or heat exchange effect.

[0048] The temperature of the compressed air source itself is stable. It is only affected by the ambient temperature that the temperature of the compressed air at the inlet changes. This effect can be reduced by adding an insulation layer to the inlet and outlet pipelines of the vortex tube. At the same time, by changing the opening degree of the inlet valve, the outlet flow rate at the cold and hot ends can be changed, thereby maintaining the constant cooling / heating effect of the required cold and hot source.

[0049] Thermometers are installed on both the hot-end and cold-end outlet pipelines to detect the fluid temperature within the pipelines. When the hot and cold-end temperatures change, the hot-end valve, cold-end valve, and / or inlet valve are adjusted to ensure that the hot and cold-end temperatures of the vortex tube remain within the normal temperature range. Pressure gauges are installed on the inlet pipeline 311, the hot-end outlet pipeline, and the cold-end outlet pipeline to detect the gas pressure within the pipelines. By observing the pressure difference between the inlet pipeline pressure gauge and the pressure gauges at the cold and hot ends when the fluid flows through the vortex tube 3, the pressure drop during the gas flow process in the vortex tube 3 can be obtained, thus revealing the gas flow state within the vortex tube 3. If the pressure gauge readings at the inlet pipeline and the cold and hot end outlet pipelines are stable, the vortex tube 3 is operating normally. However, if the pressure drop between the inlet pipeline pressure gauge and the cold and hot end outlet pipeline pressure gauges is excessive, it indicates that the vortex tube 3 is blocked and needs to be cleaned.

[0050] A first pressure gauge 122 and a first temperature gauge 123 are installed on the heat tracing jacket inlet pipe 12, and a second pressure gauge 232 and a second temperature gauge 233 are installed on the shell-side inlet pipe 23 of the heat exchanger. By observing the flow of hot and cold air from the hot and cold ends of the vortex tube, and recording the initial values ​​of the first pressure gauge 122, the second pressure gauge 232, the first temperature gauge 123, and the second temperature gauge 233, the flow state of the gas in the vortex tube 3 can be determined. If the values ​​of the first pressure gauge 122, the second pressure gauge 232, the first temperature gauge 123, and the second temperature gauge 233 are basically consistent with the initial values ​​and are stable, the vortex tube 3 is operating normally. However, if the values ​​of the first temperature gauge 123 and the second temperature gauge 233 are basically consistent with the initial values, but the values ​​of the first pressure gauge 122 and the second pressure gauge 232 differ significantly from the initial values, it indicates that the vortex tube 3 is blocked and needs to be cleaned.

[0051] Specifically, room-temperature dry compressed gas enters the annular intake chamber 32 through the compressed gas inlet 31, expands, and enters the flow channel 33. The flow direction of the gas in the flow channel 33 is as follows: Figure 7As indicated by the middle arrow, the gas then enters the vortex chamber 34 along the tangential direction of the outlet of the flow channel 33, forming a high-speed free vortex. Since the diameter of the hot-end pipe 35 is larger than that of the cold-end pipe 36, most of the high-speed gas flow along the wall of the hot-end pipe 35 towards the hot-end outlet while the gas rotates. During this process, friction between the gas flow and the pipe wall causes the gas temperature to gradually increase. Due to the action of the hot-end valve 351 at the outlet of the hot-end pipe 35, only a portion of the fluid flows out of the hot end through the gap of the hot-end valve 351. At this point, the gas temperature reaches its maximum, i.e., forming... The hot end pipe 35 becomes a heat source; while the remaining fluid flow is obstructed, that is, by the obstruction of the hot end valve 351, the free vortex is deflected, generating a forced reverse vortex, which flows along the axis of the hot end pipe 35 to the cold end pipe 36. During this process, the vortex at the center of the hot end pipe 35 rotates in the opposite direction to the vortex at the pipe wall, spontaneously generating energy separation. The temperature of the airflow at the center gradually decreases, becoming lower than the inlet temperature of the compressed gas. When it reaches the outlet of the cold end pipe 36, the temperature reaches the lowest point, thus forming a cold source, thereby saving energy loss and reducing energy consumption.

[0052] The centrifugal conveying system provided by this utility model has a vortex tube 3 whose hot end outlet is connected to a heated jacket inlet pipe 12 to provide a stable heat source and prevent material crystallization inside the pump; the cold end outlet of the vortex tube 3 is connected to a heat exchanger shell-side inlet pipe 23 to provide a heat source for the flushing fluid; the vortex tube 3 does not move or do work during the energy separation process, but relies on the energy of the airflow itself and the special structure of the vortex tube 3 to automatically generate an energy separation effect. There are no moving parts or additional energy sources in the equipment, and room temperature compressed gas can easily enter and exit, providing a continuous and stable cold and heat source; the cold and heat source provided by the vortex tube is converted from dry compressed air, with high cleanliness and no impurities or condensate generated, which is beneficial to the equipment. It does not produce corrosion, greatly ensuring that the equipment will not be blocked and guaranteeing efficient and stable operation. The pump body is equipped with a vortex tube 3, and the hot and cold air flow after the compressed gas is separated by the energy of the vortex tube 3 is used as the heat source required by the pump heat tracing jacket and the shell heat exchange gas source of the heat exchange device. This effectively shortens the length of the cold and heat source pipelines, reduces the influence of environmental factors on the air flow during pipeline transmission, and changes the traditional cold and heat source pipelines to compressed gas pipelines, reducing costs and improving safety. Compared with traditional cooling water, the cold source air flow from the cold end of the vortex tube has a lower temperature. When used as the shell heat exchange medium of the mechanical seal flushing fluid heat exchange device, the temperature difference between the shell and tube sides is large, which can effectively improve the heat exchange efficiency and greatly reduce the energy consumption of cooling water preparation.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 centrifugal conveying system, characterized in that, The device includes a centrifugal pump (1), a heat exchanger (2), and a vortex tube (3). The centrifugal pump (1) is equipped with a mechanical seal (11), a heat tracing jacket inlet pipe (12), and a heat tracing jacket outlet pipe (13). The heat exchanger (2) is equipped with a mechanical seal flushing fluid inlet pipe (21), a mechanical seal flushing fluid outlet pipe (22), a heat exchanger shell-side inlet pipe (23), and a heat exchanger shell-side outlet pipe (24). The mechanical seal flushing fluid inlet pipe (21) and the mechanical seal flushing fluid outlet pipe (22) are connected to the mechanical seal (11). The vortex tube (3) is equipped with a compressed gas inlet (31), a hot end pipe (35), and a cold end pipe (36). The outlet of the hot end pipe (35) is connected to the heat tracing jacket inlet pipe (12), and the outlet of the cold end pipe (36) is connected to the heat exchanger shell-side inlet pipe (23).

2. The centrifugal conveying system according to claim 1, characterized in that, An inlet valve is provided at the compressed gas inlet (31).

3. The centrifugal conveying system according to claim 2, characterized in that, A hot-end valve (351) is provided at the outlet of the hot-end pipe (35), and a cold-end valve is provided at the outlet of the cold-end pipe (36).

4. The centrifugal conveying system according to claim 3, characterized in that, The outlet of the hot end pipe (35) is connected to the heat tracing jacket inlet pipe (12) through the hot end outlet pipeline, the outlet of the cold end pipe (36) is connected to the heat exchanger shell side inlet pipe (23) through the cold end outlet pipeline, the compressed gas inlet (31) is connected to the compressed gas storage device through the inlet pipeline (311), and the outer walls of the hot end outlet pipeline, the cold end outlet pipeline and the inlet pipeline (311) are provided with a heat insulation layer.

5. The centrifugal conveying system according to claim 4, characterized in that, Temperature gauges are installed on both the hot-end and cold-end outlet pipelines.

6. The centrifugal conveying system according to claim 4, characterized in that, Pressure gauges are installed on the inlet pipeline (311), the hot end outlet pipeline, and the cold end outlet pipeline.

7. The centrifugal conveying system according to claim 3, characterized in that, The vortex tube (3) also includes an annular air intake chamber (32), a flow channel (33) and a vortex chamber (34) connected in sequence. The annular air intake chamber (32) is connected to the compressed gas inlet (31). The diameter of the hot end tube (35) is larger than the diameter of the cold end tube (36).

8. The centrifugal conveying system according to claim 3, characterized in that, The hot end valve (351) is disposed inside the hot end tube (35), and the hot end valve (351) and the hot end tube (35) are connected by threads.

9. The centrifugal conveying system according to claim 8, characterized in that, The hot end valve (351) and the hot end pipe (35) are connected by a 60° tapered thread.

10. The centrifugal conveying system according to claim 1, characterized in that, The heat tracing jacket inlet pipe (12) is equipped with a first pressure gauge (122) and a first temperature gauge (123), and the heat exchanger shell-side inlet pipe (23) is equipped with a second pressure gauge (232) and a second temperature gauge (233).

Images