Failure judging, processing and flushing device for plate heat exchanger

Abstract

The device comprises a fixed base, a translation groove is formed in the top end of the fixed base, a lead screw is rotationally connected into the translation groove, a translation block slidably connected with the translation groove is in threaded connection with the middle of the lead screw, and a vertical plate is fixedly mounted on one side of the top end of the translation block; a lifting mechanism is fixedly mounted on one side of the vertical plate, an operation panel is fixedly mounted at the top end of the other side of the vertical plate, a control module and a fault distinguishing module are fixedly mounted in the operation panel, the lifting mechanism comprises four limiting plates, a mounting seat and a connecting table, and a cleaning table is fixedly mounted on one side of the connecting table. The fault distinguishing module distinguishes numerical values of the vibration frequency, the current, the frequency and the outlet flow of the barren liquor pump, so that whether the plate heat exchanger is blocked or not is indirectly judged, and the flushing device can conveniently clean sundries of the plate heat exchanger in time.

Description

Technical Field

[0001] The invention relates to the field of plate heat exchangers, in particular to a fault judgment, processing and flushing device for plate heat exchangers. Background Art

[0002] Plate heat exchanger is a kind of heat exchanger. Plate heat exchanger is usually used for heating and cooling liquids. It is very common in the industrial industry. At the same time, this type of heat exchanger can also be used as a fire prevention device. Plate heat exchanger is a new type of high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, small footprint, easy installation and cleaning, wide application, and long service life. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of tubular heat exchanger, and the footprint is one-third of that of tubular heat exchanger. The heat recovery rate can be as high as 90% or more. The types of plate heat exchangers are mainly frame type (detachable) and brazed type. The plate form is mainly There are three types of plate heat exchangers: herringbone corrugated plates, horizontal straight corrugated plates and nodular plates. Plate heat exchangers are welded together according to different external and internal components, and the brazed plate construction model is achieved by vacuum brazing. Different heat exchangers have different internal parts. In many cases, smaller parts work better. Some chambers are designed to be thin so that most of the liquid contacts the plate, which improves heat transfer. Smaller coils can better withstand extreme pressures. It is advantageous to use plate heat exchangers in a variety of ways. Plate heat exchangers are durable, portable and easy to maintain. The working principle of the entire system is different for different liquids and does not take up too much space. The plates on the plate heat exchanger are easy to separate and clean, so they are widely used. The lean and rich liquid heat exchanger is a type of plate heat exchanger. Its operation should be strictly in accordance with the equipment regulations and the temperature and pressure rise and fall rates should be strictly controlled.

[0003] In some industrial regeneration systems, the absorption tower absorbs SO 2The extremely rich liquid of the ion liquid is preliminarily heated by the lean-rich liquid heat exchanger and then enters the upper part of the regeneration tower. The rich liquid contacts the water vapor and sulfur dioxide gas regenerated from the bottom of the regeneration tower in reverse, and the temperature is further increased. At the same time, part of the sulfur dioxide gas is analyzed. Then the ion liquid enters the reboiler and is further heated to about 110°C. The sulfur dioxide gas is completely analyzed. The gas-liquid mixture coming out of the reboiler is separated at the bottom of the regeneration tower, and the liquid flows out from the bottom outlet and enters the lean-rich liquid heat exchanger. Before the lean liquid in the lean-rich liquid heat exchanger is cooled, in order to save energy, the heat is first transferred to the rich liquid that needs to be heated. Then, the lean liquid is further cooled by groundwater or ice water transported by the lean liquid pump. Similarly, if the temperature of the rich liquid does not reach the required temperature, it is continued to be heated by high-temperature water vapor. At this time, the sulfur dioxide gas and water vapor flow upward.

[0004] However, the traditional lean-rich liquid heat exchanger has the following disadvantages:

[0005] Traditional lean-rich heat exchangers are prone to scaling and accumulation due to continuous operation and the characteristics of the device operation, which can easily cause liquid flow obstruction, affecting heat exchange efficiency and becoming a hidden danger that restricts the long-term operation of the device and equipment safety. Summary of the invention

[0006] The purpose of the present invention is to provide a fault judgment, processing and flushing device for a plate heat exchanger, so as to solve the problem proposed in the above background technology that the traditional lean-rich heat exchanger is prone to scaling and accumulation due to continuous operation and the operating characteristics of the device, and is prone to liquid flow obstruction, affecting the heat exchange efficiency and becoming a hidden danger restricting the long-term operation of the device and the safety of the equipment.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fault judgment, processing and flushing device for a plate heat exchanger, comprising a fixed base, a translation groove is provided at the top of the fixed base, a screw rod is rotatably connected inside the translation groove, a translation block slidably connected to the translation groove is threadedly connected to the middle part of the screw rod, a vertical plate is fixedly installed on one side of the top of the translation block, a lifting mechanism is fixedly installed on one side of the vertical plate, an operation panel is fixedly installed on the top of the other side of the vertical plate, a control module and a fault identification module are fixedly installed inside the operation panel, the lifting mechanism comprises four limit plates, a mounting seat and a connecting platform, a cleaning platform is fixedly installed on one side of the connecting platform, a rotating motor is fixedly installed on the top of the cleaning platform, a flushing mechanism is fixedly installed on the output end of the rotating motor, and after the fault identification module identifies the blockage condition of the plate heat exchanger, the debris blocked in the plate heat exchanger is flushed according to the identification condition.

[0008] As an optimal technical scheme of the present invention, a height rod is fixedly installed between each two limit plates facing the two limit plates, and the middle parts of the two height rods are slidably connected with a lifting block, and the opposite sides of the two lifting blocks are fixedly connected to the two ends of the connecting platform respectively, and the inner rotation of the mounting seat is connected to a turntable, and a synchronization rod is fixedly installed on one side of the turntable, and the end of the synchronization rod away from the turntable is rotatably connected to a linkage rod, and a pushing plate is fixedly installed on the bottom end of the connecting platform, and the bottom end of the pushing plate is rotatably connected to the side facing the linkage rod, one side of the four limit plates and one side of the mounting seat are fixedly connected to the vertical plate, and when the turntable rotates, the synchronization rod is driven to move synchronously, and the synchronization rod pushes the linkage rod from one side, the linkage rod is deflected at an angle, the vertical height of the linkage rod changes, and the linkage rod is pushed upward from the bottom of the push plate, and the connecting platform slides along the height rod with the lifting block to adjust the flushing height of the flushing mechanism.

[0009] As a preferred technical solution of the present invention, the flushing mechanism includes a flushing frame with holes and a cleaning brush plate, a spray pipe is fixedly installed inside the flushing frame with holes, the top of the flushing frame with holes is fixedly connected to the bottom end of the cleaning brush plate, and one side of the flushing frame with holes is fixedly connected to a rotating motor. The rotating motor is started after being energized, and the rotating motor drives the flushing mechanism to rotate, and the flushing direction of the flushing mechanism is adjusted. The cleaning liquid sprayed from the spray pipe wets the cleaning brush plate, and the cleaning brush plate contacts the plate heat exchanger to clean the debris blocked inside the plate heat exchanger.

[0010] As a preferred technical solution of the present invention, a cleaning liquid tank and a water pump are fixedly installed on the side of the top of the translation block away from the vertical plate, the water inlet of the water pump is fixedly connected to an extraction pipe extending to the inside of the cleaning liquid tank, the surface of the spray pipe is installed with a mounting joint extending to the outside, and the water outlet of the water pump is fixedly connected to a delivery hose connected to the mounting joint. The water pump is started after being powered on, and the water pump draws the cleaning liquid stored in the cleaning liquid tank through the extraction pipe, and the extracted cleaning liquid is delivered to the spray pipe through the delivery hose, and the spray pipe sprays the cleaning liquid evenly.

[0011] As a preferred technical solution of the present invention, the fault identification module includes a lean liquid pump vibration frequency identification unit, a lean liquid pump current identification unit, a lean liquid pump outlet flow identification unit and a lean liquid pump frequency identification unit. The fault identification module determines whether the plate heat exchanger is blocked based on the vibration frequency, current, frequency and outlet flow of the lean liquid pump.

[0012] As a preferred technical solution of the present invention, movable wheels are fixedly installed on the four corners of the bottom end of the fixed base, a servo motor is fixedly installed on one side of the fixed base, the output end of the servo motor passes through the fixed base and is fixedly connected with the end opposite to the screw rod, the servo motor is started after being energized, the servo motor drives the screw rod to rotate, the thread on the surface of the screw rod matches the thread on the inner wall of the translation block, the translation block is limited by a translation groove whose shape and size match the translation groove, so the translation block slides along the screw rod to adjust the flushing position of the flushing mechanism.

[0013] As a preferred technical solution of the present invention, a handle located below the operating panel is fixedly mounted on the vertical plate, and a motor body located below the handle is fixedly mounted on the vertical plate. The output end of the motor body passes through the vertical plate and the mounting seat in sequence and is fixedly connected to the middle part of the turntable. The motor body starts after being energized, and the motor body drives the turntable to rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting up a fault identification module, the fault identification module identifies the vibration frequency, current, frequency and outlet flow value of the lean liquid pump respectively, thereby indirectly judging whether the plate heat exchanger is blocked, so that the flushing device can clean the plate heat exchanger of debris in time;

[0016] 2. By setting the lifting mechanism, translation block and rotating motor, the translation block rotates along the rotating screw to adjust the position of the flushing mechanism. After the turntable rotates, it drives the synchronous rod to move synchronously. The synchronous rod adjusts the height of the connecting table through the linkage rod and the push plate, and indirectly adjusts the height of the flushing mechanism. The rotating motor drives the flushing mechanism to rotate to adjust the flushing direction of the flushing mechanism, thereby improving the comprehensiveness of the flushing of the flushing mechanism;

[0017] 3. By setting up a flushing mechanism, the spray pipe sprays cleaning liquid to wet the cleaning brush. The cleaning brush contacts the debris in the plate heat exchanger and cleans it, thereby ensuring the heat exchange efficiency of the plate heat exchanger in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a side view of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 It is a side view of the lifting mechanism of the present invention;

[0021] Figure 4 It is a connection diagram of the flushing mechanism and the rotating motor of the present invention;

[0022] Figure 5It is a structural schematic diagram of the fault identification module of the present invention.

[0023] In the figure: 1. fixed base; 2. moving wheel; 3. translation block; 4. flushing mechanism; 41. cleaning brush plate; 42. flushing frame with holes; 43. spray pipe; 5. rotating motor; 6. lifting mechanism; 61. height rod; 62. lifting block; 63. connecting platform; 64. pushing plate; 65. linkage rod; 66. synchronization rod; 67. turntable; 68. mounting seat; 69. limit plate; 7. vertical plate; 8. operation panel; 9. handle; 10. Motor body; 11. Servo motor; 12. Translation slot; 13. Screw rod; 14. Water pump; 15. Extraction pipe; 16. Cleaning liquid tank; 17. Delivery hose; 18. Installation joint; 19. Control module; 20. Fault identification module; 201. Lean liquid pump vibration frequency identification unit; 202. Lean liquid pump current identification unit; 203. Lean liquid pump outlet flow identification unit; 204. Lean liquid pump frequency identification unit; 21. Cleaning table. DETAILED DESCRIPTION

[0024] The following will be combined with 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 making creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The present invention provides a fault judgment and processing flushing device for a plate heat exchanger, comprising a fixed base 1, a translation groove 12 is opened at the top of the fixed base 1, a screw rod 13 is rotatably connected inside the translation groove 12, a translation block 3 slidably connected to the translation groove 12 is threadedly connected to the middle part of the screw rod 13, a vertical plate 7 is fixedly installed on one side of the top of the translation block 3, a lifting mechanism 6 is fixedly installed on one side of the vertical plate 7, an operation panel 8 is fixedly installed on the top of the other side of the vertical plate 7, a control module 19 and a fault identification module 20 are fixedly installed inside the operation panel 8, the lifting mechanism 6 includes four limit plates 69, a mounting seat 68 and a connecting platform 63, a cleaning platform 21 is fixedly installed on one side of the connecting platform 63, a rotating motor 5 is fixedly installed on the top of the cleaning platform 21, and a flushing mechanism 4 is fixedly installed on the output end of the rotating motor 5. After the fault identification module 20 identifies the blockage condition of the plate heat exchanger, the sundries blocked in the plate heat exchanger are flushed according to the identification condition.

[0026] A height rod 61 is fixedly installed between each two limiting plates 69, and a lifting block 62 is slidably connected to the middle parts of the two height rods 61. The opposite sides of the two lifting blocks 62 are fixedly connected to the two ends of the connecting platform 63 respectively. A turntable 67 is rotatably connected inside the mounting seat 68, and a synchronization rod 66 is fixedly installed on one side of the turntable 67. The end of the synchronization rod 66 away from the turntable 67 is rotatably connected to the linkage rod 65. A pushing plate 64 is fixedly installed at the bottom end of the connecting platform 63, and the bottom end of the pushing plate 64 is rotatably connected to the side opposite to the linkage rod 65. One side of the four limiting plates 69 and one side of the mounting seat 68 are fixedly connected to the vertical plate 7. When the turntable 67 rotates, the synchronization rod 66 is driven to move synchronously. The synchronization rod 66 pushes the linkage rod 65 from one side, and the linkage rod 65 deflects at an angle, and the vertical height of the linkage rod 65 changes. The linkage rod 65 is pushed upward from the bottom of the pushing plate 64, and the connecting platform 63 slides along the height rod 61 with the lifting block 62 to adjust the flushing height of the flushing mechanism 4.

[0027] The flushing mechanism 4 includes a flushing frame 42 with holes and a cleaning brush plate 41. A spray pipe 43 is fixedly installed inside the flushing frame 42 with holes. The top of the flushing frame 42 with holes is fixedly connected to the bottom of the cleaning brush plate 41. One side of the flushing frame 42 with holes is fixedly connected to the rotating motor 5. The rotating motor 5 is started after being energized. The rotating motor 5 drives the flushing mechanism 4 to rotate and adjusts the flushing direction of the flushing mechanism 4. The cleaning liquid sprayed from the spray pipe 43 wets the cleaning brush plate 41. The cleaning brush plate 41 contacts the plate heat exchanger to clean the debris blocked inside the plate heat exchanger.

[0028] A cleaning liquid tank 16 and a water pump 14 are fixedly installed on one side of the top of the translation block 3 away from the vertical plate 7. The water inlet of the water pump 14 is fixedly connected to an extraction pipe 15 extending to the inside of the cleaning liquid tank 16. The surface of the spray pipe 43 is installed with a mounting joint 18 extending to the outside. The water outlet of the water pump 14 is fixedly connected to a delivery hose 17 connected to the mounting joint 18. The water pump 14 is started after being powered on. The water pump 14 extracts the cleaning liquid stored in the cleaning liquid tank 16 through the extraction pipe 15. The extracted cleaning liquid is transported to the spray pipe 43 through the delivery hose 17, and the spray pipe 43 sprays the cleaning liquid evenly.

[0029] The fault identification module 20 includes a lean liquid pump vibration frequency identification unit 201, a lean liquid pump current identification unit 202, a lean liquid pump outlet flow identification unit 203 and a lean liquid pump frequency identification unit 204. The fault identification module 20 determines whether the plate heat exchanger is blocked based on the vibration frequency, current, frequency and outlet flow of the lean liquid pump.

[0030] The four corners at the bottom of the fixed base 1 are fixedly installed with moving wheels 2, and a servo motor 11 is fixedly installed on one side of the fixed base 1. The output end of the servo motor 11 passes through the fixed base 1 and is fixedly connected with the end opposite to the screw rod 13. The servo motor 11 is started after being powered on, and the servo motor 11 drives the screw rod 13 to rotate. The thread on the surface of the screw rod 13 matches the thread on the inner wall of the translation block 3. The translation block 3 is limited by the translation groove 12 whose shape and size match it, so the translation block 3 slides along the screw rod 13 to adjust the flushing position of the flushing mechanism 4.

[0031] A handle 9 located below the operating panel 8 is fixedly mounted on the vertical plate 7, and a motor body 10 located below the handle 9 is fixedly mounted on the vertical plate 7. The output end of the motor body 10 passes through the vertical plate 7 and the mounting seat 68 in sequence and is fixedly connected to the middle of the turntable 67. The motor body 10 starts after being energized, and the motor body 10 drives the turntable 67 to rotate.

[0032] When the present invention is in use: before the flushing device is used, the fault identification module 20 determines whether the plate heat exchanger is blocked based on the vibration frequency, current, frequency and outlet flow of the lean liquid pump. When it is determined that the plate heat exchanger is blocked, the servo motor 11 is powered on and started, and the servo motor 11 drives the screw rod 13 to rotate. The thread on the surface of the screw rod 13 matches the thread on the inner wall of the translation block 3. The translation block 3 is limited by the translation groove 12 whose shape and size match the screw rod 13, so the translation block 3 slides along the screw rod 13 to adjust the flushing position of the flushing mechanism 4. The motor body 10 is powered on and started, and the motor body 10 drives the turntable 67 to rotate. When the turntable 67 rotates, it drives the synchronization rod 66 to move synchronously. The synchronization rod 66 pushes the linkage rod 65 from one side, and the linkage rod 65 moves. The angle is deflected, and the vertical height of the linkage rod 65 changes. The linkage rod 65 is pushed upward from the bottom of the push plate 64, and the connecting platform 63 slides along the height rod 61 with the lifting block 62 to adjust the flushing height of the flushing mechanism 4. The rotating motor 5 is powered on and started, and the rotating motor 5 drives the flushing mechanism 4 to rotate, and the flushing direction of the flushing mechanism 4 is adjusted. The water pump 14 is powered on and started, and the water pump 14 extracts the cleaning liquid stored in the cleaning liquid tank 16 through the extraction pipe 15, and the extracted cleaning liquid is transported to the spray pipe 43 through the delivery hose 17. The spray pipe 43 sprays the cleaning liquid evenly, and the cleaning liquid sprayed from the spray pipe 43 wets the cleaning brush plate 41, and the cleaning brush plate 41 contacts the plate heat exchanger to clean the debris blocked inside the plate heat exchanger.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fault diagnosis and treatment flushing device for a plate heat exchanger, comprising a fixed base (1), characterized in that: The top of the fixed base (1) is provided with a translation groove (12), the inside of the translation groove (12) is rotatably connected with a screw rod (13), the middle part of the screw rod (13) is threadedly connected with a translation block (3) slidably connected to the translation groove (12), a vertical plate (7) is fixedly installed on one side of the top of the translation block (3), a lifting mechanism (6) is fixedly installed on one side of the vertical plate (7), an operation panel (8) is fixedly installed on the top of the other side of the vertical plate (7), a control module (19) and a fault identification module (20) are fixedly installed inside the operation panel (8), the lifting mechanism (6) comprises four limit plates (69), a mounting seat (68) and a connecting platform (63), a cleaning platform (21) is fixedly installed on one side of the connecting platform (63), a rotating motor (5) is fixedly installed on the top of the cleaning platform (21), and a flushing mechanism (4) is fixedly installed on the output end of the rotating motor (5).

2. The fault judgment and flushing device for a plate heat exchanger according to claim 1, characterized in that: A height rod (61) is fixedly installed between every two of the limit plates (69), and a lifting block (62) is slidably connected to the middle parts of the two height rods (61). The opposite sides of the two lifting blocks (62) are fixedly connected to the two ends of the connecting platform (63) respectively. A turntable (67) is rotatably connected inside the mounting seat (68), and a synchronization rod (66) is fixedly installed on one side of the turntable (67). The end of the synchronization rod (66) away from the turntable (67) is rotatably connected to a linkage rod (65). A push plate (64) is fixedly installed at the bottom end of the connecting platform (63), and the bottom end of the push plate (64) is rotatably connected to the side opposite to the linkage rod (65). One side of the four limit plates (69) and one side of the mounting seat (68) are fixedly connected to the vertical plate (7).

3. The fault judgment, processing and flushing device for a plate heat exchanger according to claim 1, characterized in that: The flushing mechanism (4) comprises a flushing frame with holes (42) and a cleaning brush plate (41); a spray pipe (43) is fixedly installed inside the flushing frame with holes (42); the top end of the flushing frame with holes (42) is fixedly connected to the bottom end of the cleaning brush plate (41); and one side of the flushing frame with holes (42) is fixedly connected to a rotating motor (5).

4. The fault judgment and processing flushing device for a plate heat exchanger according to claim 3 is characterized in that: A cleaning liquid tank (16) and a water pump (14) are fixedly mounted on the side of the top of the translation block (3) away from the vertical plate (7); the water inlet of the water pump (14) is fixedly connected to an extraction pipe (15) extending to the inside of the cleaning liquid tank (16); a mounting joint (18) extending to the outside is mounted on the surface of the spray pipe (43); and the water outlet of the water pump (14) is fixedly connected to a delivery hose (17) connected to the mounting joint (18).

5. The fault judgment, processing and flushing device for a plate heat exchanger according to claim 1, characterized in that: The fault identification module (20) comprises a lean liquid pump vibration frequency identification unit (201), a lean liquid pump current identification unit (202), a lean liquid pump outlet flow identification unit (203) and a lean liquid pump frequency identification unit (204).

6. The fault judgment and processing flushing device for a plate heat exchanger according to claim 1, characterized in that: The four corners at the bottom of the fixed base (1) are all fixedly mounted with moving wheels (2), and a servo motor (11) is fixedly mounted on one side of the fixed base (1), and the output end of the servo motor (11) passes through the fixed base (1) and is fixedly connected to an end directly opposite to the screw rod (13).

7. The fault judgment, processing and flushing device for a plate heat exchanger according to claim 2, characterized in that: A handle (9) located below the operating panel (8) is fixedly mounted on the vertical plate (7), and a motor body (10) located below the handle (9) is fixedly mounted on the vertical plate (7). The output end of the motor body (10) passes through the vertical plate (7) and the mounting seat (68) in sequence and is fixedly connected to the middle of the turntable (67).

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