Plate heat exchanger system and using method

Abstract

The invention discloses a plate heat exchanger system and a using method, and relates to the technical field of heat exchangers, the plate heat exchanger system comprises a plate heat exchanger, a steam supply pipeline and a cooling device, the plate heat exchanger is provided with a first channel and a second channel which are divided by heat exchange plates, rubber pads are arranged between the heat exchange plates, and one end of the first channel is provided with a steam inlet; a cold water inlet is formed in one end of the second channel, and a hot water outlet is formed in the other end of the second channel; one end of the steam supply pipeline is communicated with a steam inlet, and the other end is communicated with an ultra-high-temperature steam source; the cooling device is arranged on the steam supply pipeline so as to cool steam entering the steam inlet. The service life of the heat exchanger is effectively prolonged, and the labor intensity of workers is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and in particular to a plate heat exchanger system and a use method thereof. Background Art

[0002] The plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. The water treatment plate heat exchanger is an efficient heat exchange equipment that realizes heat transfer through the medium flowing between the heat exchange plates. In the cold industrial environment in winter, water needs to be heated to a suitable temperature before production can be carried out. The water treatment plate heat exchanger can heat the water and maintain a constant temperature through heat exchange. The rubber pads between the heat exchange plates play the role of sealing, adjusting the channel gap, buffering and shock absorption, and anti-corrosion, ensuring that the fluid does not leak during the transmission process, flows evenly, absorbs vibration shock, slows down the corrosion of the heat exchange plate, improves thermal efficiency, and extends the service life of the heat exchanger. However, due to factors such as high inlet water temperature, corrosive chloride ions in the water, and residual stress on the heat exchange plate, the rubber pads corrode rapidly and are frequently replaced, which increases the spare parts standby and the labor intensity of employees. Therefore, a method is needed to extend the replacement cycle of the rubber pads of the plate heat exchanger to reduce the consumption of spare parts and reduce the labor intensity of employees. Summary of the invention

[0003] The purpose of the present invention is to provide a plate heat exchanger system and a method of use to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively extending the service life of the heat exchanger, and effectively reducing the labor intensity of employees.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a plate heat exchanger system, comprising: a plate heat exchanger, a steam supply pipeline, and a cooling device. The plate heat exchanger is provided with a first channel and a second channel separated by a heat exchange plate, and a rubber pad is provided between each of the heat exchange plates. A steam inlet is provided at one end of the first channel, and a condensate outlet is provided at the other end. A cold water inlet is provided at one end of the second channel, and a hot water outlet is provided at the other end. One end of the steam supply pipeline is used to communicate with the steam inlet, and the other end is used to communicate with an ultra-high temperature steam source. The cooling device is arranged on the steam supply pipeline to cool the steam entering the steam inlet.

[0006] Preferably, the cooling device includes a tubular heat exchanger, a water inlet pipe and a water outlet pipe, the tubular heat exchanger is used to be sleeved on the outside of the steam supply pipe, the tubular heat exchanger includes a water inlet and a water outlet, the water inlet is connected to the water inlet pipe, and the water outlet is used to connect to the water outlet pipe.

[0007] Preferably, the cooling device also includes a water tank, a lifting pump and a first valve, the water tank is used to store cooling water, the water inlet pipe is connected to the water tank at one end away from the tubular heat exchanger, and the lifting pump and the first valve are arranged on the water inlet pipe.

[0008] Preferably, it also includes a condensate pipe and a second valve, one end of the condensate pipe is connected to the condensate outlet, and the other end is connected to the top of the water tank, and the second valve is arranged on the condensate pipe.

[0009] Preferably, it also includes a desalted water replenishment pipeline and a third valve, one end of the desalted water replenishment pipeline is connected to the desalted water source, and the other end is connected to the water tank, and the third valve is arranged on the desalted water replenishment pipeline.

[0010] Preferably, it further comprises a pressure reducing valve, which is arranged on the steam supply pipeline and located on a side of the tubular heat exchanger away from the plate heat exchanger.

[0011] Preferably, it further comprises a fourth valve, wherein the fourth valve is arranged on the steam supply pipeline between the tubular heat exchanger and the plate heat exchanger.

[0012] Preferably, it also includes a cold water inlet pipe, a fifth valve, a hot water outlet pipe and a sixth valve, the cold water inlet pipe is connected to the cold water inlet, the fifth valve is arranged on the cold water inlet pipe, the hot water outlet pipe is connected to the hot water outlet, and the sixth valve is arranged on the hot water outlet pipe.

[0013] The present invention further provides a plate heat exchanger system as described in any one of the above items, characterized in that it comprises the following steps:

[0014] Open the fifth valve on the cold water inlet pipe connected to the plate heat exchanger and the sixth valve on the hot water outlet pipe to put the plate heat exchanger in normal working condition;

[0015] Adjust the pressure reducing valve on the steam supply pipeline to adjust the steam pressure to the appropriate range;

[0016] Turn on the boost pump to deliver cooling water from the water tank to the tubular heat exchanger.

[0017] The tubular heat exchanger cools the steam supply pipeline, lowering the temperature of the super-high temperature steam, thereby reducing corrosion to the rubber pad.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The present invention provides a plate heat exchanger system and a method for using the same. A cooling device is provided to cool the steam, thereby reducing the corrosion of the rubber pad by the ultra-high temperature steam and extending the service life and replacement cycle of the rubber pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The present invention provides a structural schematic diagram of a plate heat exchanger system;

[0022] In the figure: 1. Plate heat exchanger; 2. Steam inlet; 3. Condensate outlet; 4. Cold water inlet; 5. Hot water outlet; 6. Steam supply pipeline; 7. Tubular heat exchanger; 8. Water inlet pipeline; 9. Water outlet pipeline; 10. Water tank; 11. Lifting pump; 12. First valve; 13. Condensate pipeline; 14. Second valve; 15. Demineralized water replenishment pipeline; 16. Third valve; 17. Pressure reducing valve; 18. Fourth valve; 19. Cold water inlet pipe; 20. Fifth valve; 21. Hot water outlet pipe; 22. Sixth valve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide a plate heat exchanger system and a method of use to solve the problems existing in the above-mentioned prior art, with a simple structure, effectively extending the service life of the heat exchanger, and effectively reducing the labor intensity of employees.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Embodiment 1

[0027] This embodiment provides a plate heat exchanger 1 system, such as Figure 1As shown, it includes: a plate heat exchanger 1, a steam supply pipe 6, and a cooling device. The plate heat exchanger 1 is provided with a first channel and a second channel separated by a heat exchange plate, and a rubber pad is provided between each heat exchange plate. A steam inlet 2 is provided at one end of the first channel, and a condensate outlet 3 is provided at the other end. A cold water inlet 4 is provided at one end of the second channel, and a hot water outlet 5 is provided at the other end; one end of the steam supply pipe 6 is used to communicate with the steam inlet 2, and the other end is used to communicate with the ultra-high temperature steam source; the cooling device is provided on the steam supply pipe 6 to cool down the steam entering the steam inlet 2. By providing the cooling device to cool down the steam, the corrosion of the ultra-high temperature steam to the rubber pad can be reduced, and the service life and replacement cycle of the rubber pad can be extended.

[0028] In a preferred solution of the present embodiment, the cooling device includes a tubular heat exchanger 7, a water inlet pipe 8 and a water outlet pipe 9. The tubular heat exchanger 7 is used to be sleeved on the outside of the steam supply pipe 6. The tubular heat exchanger 7 includes a water inlet and a water outlet. The water inlet is connected to the water inlet pipe 8, and the water outlet is used to be connected to the water outlet pipe 9. The tubular heat exchanger 7 is sleeved on the outside of the steam supply pipe 6, has a compact structure, can effectively cool the steam, and is convenient for installation and maintenance.

[0029] In a preferred scheme of the present embodiment, the cooling device also includes a water tank 10, a lifting pump 11 and a first valve 12. The water tank 10 is used to store cooling water. The end of the water inlet pipe 8 away from the tubular heat exchanger 7 is connected to the water tank 10. The lifting pump 11 and the first valve 12 are arranged on the water inlet pipe 8. The water tank 10 provides a source of cooling water. The lifting pump 11 can transport cooling water to the tubular heat exchanger 7. The first valve 12 can control the flow rate of cooling water to ensure the stable operation of the cooling system.

[0030] In a preferred scheme of this embodiment, it also includes a condensate water pipe 13 and a second valve 14. One end of the condensate water pipe 13 is connected to the condensate water outlet 3, and the other end is connected to the top of the water tank 10. The second valve 14 is arranged on the condensate water pipe 13. The condensate water can be recycled to the water tank 10 as a partial cooling water source, thereby realizing resource recycling and reducing costs.

[0031] In a preferred scheme of the present embodiment, it also includes a desalted water replenishment pipe 15 and a third valve 16. One end of the desalted water replenishment pipe 15 is connected to the desalted water source, and the other end is connected to the water tank 10. The third valve 16 is arranged on the desalted water replenishment pipe 15. The desalted water can be used as a supplementary water source to ensure that there is sufficient cooling water supply in the water tank 10 to ensure the continuous operation of the cooling system.

[0032] In a preferred solution of this embodiment, a pressure reducing valve 17 is also included. The pressure reducing valve 17 is arranged on the steam supply pipe 6 and is located on the side of the tubular heat exchanger 7 away from the plate heat exchanger 1. The pressure reducing valve 17 can adjust the steam pressure and cooperate with the cooling device to better cool the steam to avoid serious corrosion to the rubber pad caused by excessively high pressure steam.

[0033] In a preferred solution of this embodiment, a fourth valve 18 is further included. The fourth valve 18 is arranged on the steam supply pipe 6 between the tubular heat exchanger 7 and the plate heat exchanger 1. The fourth valve 18 can control the steam flow entering the plate heat exchanger 1, so as to facilitate the adjustment and maintenance of the system.

[0034] In a preferred scheme of the present embodiment, it also includes a cold water inlet pipe 19, a fifth valve 20, a hot water outlet pipe 21 and a sixth valve 22. The cold water inlet pipe 19 is connected to the cold water inlet 4, the fifth valve 20 is arranged on the cold water inlet pipe 19, the hot water outlet pipe 21 is connected to the hot water outlet 5, and the sixth valve 22 is arranged on the hot water outlet pipe 21. The fifth valve 20 and the sixth valve 22 can control the flow of cold water and hot water respectively to ensure the normal operation of the plate heat exchanger 1.

[0035] Embodiment 2

[0036] This embodiment also provides a plate heat exchanger 1 system as described above, comprising the following steps:

[0037] Open the fifth valve 20 on the cold water inlet pipe 19 connected to the plate heat exchanger 1 and the sixth valve 22 on the hot water outlet pipe 21 to put the plate heat exchanger 1 in a normal working state;

[0038] Adjust the pressure reducing valve 17 on the steam supply pipeline to adjust the steam pressure to an appropriate range;

[0039] The boost pump 11 is turned on to deliver the cooling water in the water tank 10 to the tubular heat exchanger 7 .

[0040] The tubular heat exchanger 7 cools the steam supply pipeline, lowers the temperature of the super-high temperature steam, and thus reduces corrosion to the rubber pad.

[0041] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A plate heat exchanger system, characterized in that: include: A plate heat exchanger, wherein the plate heat exchanger is provided with a first channel and a second channel separated by a heat exchange plate, a rubber pad is provided between each of the heat exchange plates, a steam inlet is provided at one end of the first channel, and a condensed water outlet is provided at the other end, and a cold water inlet is provided at one end of the second channel, and a hot water outlet is provided at the other end; a steam supply pipeline, one end of which is connected to the steam inlet and the other end of which is connected to a super-high temperature steam source; and A cooling device is provided on the steam supply pipeline to cool the steam entering the steam inlet.

2. The plate heat exchanger system according to claim 1, characterized in that: The cooling device includes a tubular heat exchanger, a water inlet pipe and a water outlet pipe. The tubular heat exchanger is used to be sleeved on the outside of the steam supply pipe. The tubular heat exchanger includes a water inlet and a water outlet. The water inlet is connected to the water inlet pipe, and the water outlet is used to connect to the water outlet pipe.

3. The plate heat exchanger system according to claim 2, characterized in that: The cooling device also includes a water tank, a lifting pump and a first valve. The water tank is used to store cooling water. The end of the water inlet pipe away from the tubular heat exchanger is connected to the water tank. The lifting pump and the first valve are arranged on the water inlet pipe.

4. The plate heat exchanger system according to claim 3, characterized in that: It also includes a condensate water pipe and a second valve, one end of the condensate water pipe is connected to the condensate water outlet, and the other end is connected to the top of the water tank, and the second valve is arranged on the condensate water pipe.

5. The plate heat exchanger system according to claim 4, characterized in that: It also includes a desalted water replenishment pipeline and a third valve, one end of the desalted water replenishment pipeline is connected to the desalted water source, and the other end is connected to the water tank, and the third valve is arranged on the desalted water replenishment pipeline.

6. The plate heat exchanger system according to claim 5, characterized in that: It also includes a pressure reducing valve, which is arranged on the steam supply pipeline and located on a side of the tubular heat exchanger away from the plate heat exchanger.

7. The plate heat exchanger system according to claim 6, characterized in that: It also includes a fourth valve, which is arranged on the steam supply pipeline between the tubular heat exchanger and the plate heat exchanger.

8. The plate heat exchanger system according to claim 7, characterized in that: It also includes a cold water inlet pipe, a fifth valve, a hot water outlet pipe and a sixth valve, the cold water inlet pipe is connected to the cold water inlet, the fifth valve is arranged on the cold water inlet pipe, the hot water outlet pipe is connected to the hot water outlet, and the sixth valve is arranged on the hot water outlet pipe.

9. A plate heat exchanger system according to any one of claims 1 to 8, characterized in that: The following steps are involved: Open the fifth valve on the cold water inlet pipe connected to the plate heat exchanger and the sixth valve on the hot water outlet pipe to put the plate heat exchanger in normal working condition; Adjust the pressure reducing valve on the steam supply pipeline to adjust the steam pressure to the appropriate range; Turn on the boost pump to deliver cooling water from the water tank to the tubular heat exchanger. The tubular heat exchanger cools the steam supply pipeline, lowering the temperature of the super-high temperature steam, thereby reducing corrosion to the rubber pad.

Images