A condensing device with multi-stage heat exchange function

Abstract

The present invention discloses a condensing device with a multi-stage heat exchange function, which includes a base frame, a control cabinet, an assembly frame, an air inlet pipe, a liquid discharge pipe and a condensing mechanism. The base frame is fixedly connected to the control cabinet and the assembly frame. The condensing mechanism includes a primary heat exchange mechanism, a secondary heat exchange mechanism and a tertiary heat exchange mechanism. The primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all connected to the control cabinet through electrical signals. The primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the assembly frame. The primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the air inlet pipe. The primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the liquid discharge pipe. The present invention relates to the technical field of condensers. The present invention has a multi-section heat exchange section design that can be switched in series and parallel, which improves the recovery rate of chemical condensate and the condensation efficiency of chemical gas. After condensation is completed, the scale on the condensing pipe can be effectively cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of condensers, in particular to a condensing device with a multi-stage heat exchange function. Background Art

[0002] The condensation of chemical gases relies on the physical property of substances having different saturated vapor pressures at different temperatures. This process primarily follows the principle of heat exchange in thermodynamics, whereby chemical gases transform into liquids by releasing heat. A horizontal condenser, as a cooling device, operates based on the coolant flowing through the condenser tubes, absorbing heat from the gas or vapor, thereby causing it to condense into a liquid. During this process, heat is transferred to the coolant through the tube walls, achieving heat transfer and condensation.

[0003] Multi-stage heat exchange condensation technology gradually heats or cools the fluid through multiple heat exchange stages, significantly reducing temperature differences and significantly improving heat transfer efficiency. This staged heat exchange method can more efficiently utilize thermal energy and enhance heat transfer to meet diverse industrial heat exchange needs. In current condenser applications, regular removal of dirt and other deposits from the condenser tube surface is a key measure to ensure heat transfer efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a condensing device with a multi-stage heat exchange function to solve the problems in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A condensing device with a multi-stage heat exchange function includes a base frame, a control cabinet, an assembly frame, an air inlet pipe, a liquid discharge pipe and a condensing mechanism, the base frame is fixedly connected to the control cabinet and the assembly frame, the condensing mechanism includes a primary heat exchange mechanism, a secondary heat exchange mechanism and a tertiary heat exchange mechanism, the primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all connected to the control cabinet via electrical signals, the primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the assembly frame, the primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the air inlet pipe, and the primary heat exchange mechanism, the secondary heat exchange mechanism and the tertiary heat exchange mechanism are all fixedly connected to the liquid discharge pipe.

[0006] The present invention is a device for condensing chemical hot gas, wherein high-temperature chemical gas is input through an air inlet pipe, and different refrigerants are circulated into a primary heat exchange mechanism, a secondary heat exchange mechanism, and a tertiary heat exchange mechanism respectively. A control cabinet distributes the high-temperature gas into the primary heat exchange mechanism, and the high-temperature gas completes multi-stage heat exchange in the primary heat exchange mechanism, the secondary heat exchange mechanism, and the tertiary heat exchange mechanism in sequence, so that the high-temperature gas and different refrigerants are heat-exchanged and condensed step by step, thereby greatly improving the condensation efficiency of the chemical gas. The generated liquid is finally collected and discharged by a drain pipe. The primary heat exchange mechanism, the secondary heat exchange mechanism, and the tertiary heat exchange mechanism can all be independently closed to ensure that heat exchange failure will not occur due to damage to a certain section.

[0007] Furthermore, the condensing mechanism also includes a front baffle, a rear baffle and a segmented mechanism. The front baffle is fixedly connected to the side of the first-stage heat exchange mechanism away from the second-stage heat exchange mechanism, and the rear baffle is fixedly connected to the side of the third-stage heat exchange mechanism away from the second-stage heat exchange mechanism. The segmented mechanism includes a servo motor and an opening and closing mechanism. The servo motor and the opening and closing mechanism are each provided with two groups. One group of opening and closing mechanisms is fixedly connected to the first-stage heat exchange mechanism and the second-stage heat exchange mechanism, and the other group of opening and closing mechanisms is fixedly connected to the second-stage heat exchange mechanism and the third-stage heat exchange mechanism. The first-stage heat exchange mechanism, the third-stage heat exchange mechanism and the second-stage heat exchange mechanism have the same structure, and the servo motor is connected to the control cabinet through electrical signals.

[0008] When the heat exchange efficiency of the first-stage heat exchange mechanism is poor, an electrical signal can be sent to the servo motor through the control cabinet to isolate the first-stage heat exchange mechanism from the second-stage heat exchange mechanism. The air inlet pipe directly transports the chemical gas to the second-stage heat exchange mechanism, and the chemical gas completes heat exchange through the second-stage heat exchange mechanism and the third-stage heat exchange mechanism in turn. In the multi-stage heat exchange mode, by inputting different refrigerants into the first-stage heat exchange mechanism, the second-stage heat exchange mechanism, and the third-stage heat exchange mechanism respectively, the temperature of the chemical gas is gradually reduced to its condensation point, completing multi-stage heat exchange condensation, greatly reducing the temperature difference, significantly improving the heat transfer efficiency, and at the same time improving the recovery rate of the chemical condensate. When the condensation point temperature of the chemical gas is high and multi-stage cooling is not required, the opening and closing mechanism isolates the first-stage heat exchange mechanism from the second-stage heat exchange mechanism, and the second-stage heat exchange mechanism from the third-stage heat exchange mechanism respectively, switching the series condensation to independent condensation. The three sets of heat exchange devices can simultaneously heat and condense the same batch of chemical gases, thereby improving the condensation efficiency of the chemical gas.

[0009] Furthermore, the segmented mechanism also includes a cross frame and a first gear, the cross frame is fixedly connected to the assembly frame and the servo motor, the opening and closing mechanism includes an outer disk, a gear ring, an arc rod, an arc petal and an assembly ring, the secondary heat exchange mechanism includes a straight pipe, the outer disk is fixedly connected to the straight pipe, the first gear is engaged with the tooth surface of the gear ring, an opening and a boss are provided on the outer disk, the opening is provided at the center of the outer disk, the gear ring is provided with an arc groove, the boss, arc groove, arc rod and arc petal are provided in several groups, and several groups of bosses, arc grooves, arc rods and arc petals are evenly distributed along the circumference of the outer disk, the boss is slidingly connected to the arc groove, the arc rod is rotationally connected to the gear ring and arc petal, and the arc petal is rotationally connected to the assembly ring.

[0010] When the opening and closing mechanism separates the primary heat exchange mechanism from the secondary heat exchange mechanism, the servo motor outputs torque to the first gear, which engages with the tooth surface of the gear ring through the first gear. While the protrusion slides along the arc groove, the gear ring drives the arc petals to rotate around the assembly ring through the arc rod. A number of arc petals evenly distributed around the circumference rotate around the assembly ring, so that the arc petals close to block the opening, so that the outer disk seals and separates the two sides.

[0011] Furthermore, the secondary heat exchange mechanism also includes a tube-in-tube mechanism, a first solenoid valve tube, a second solenoid valve tube, a front air balancing mechanism, a rear air balancing mechanism, a first temperature sensor and a self-purification temperature sensor. The straight tube is provided with an air inlet, a liquid discharge port, a first side port and a second side port. The first solenoid valve tube is fixedly connected to the air inlet and the first temperature sensor, the second solenoid valve tube is fixedly connected to the liquid discharge port and the self-purification temperature sensor, the first solenoid valve tube and the second solenoid valve tube are connected to the control cabinet through electrical signals, the tube-in-tube mechanism includes a first side tube and a second side tube, the first side tube is fixedly connected to the first side port, the second side tube is fixedly connected to the second side port, the front air balancing mechanism, the rear air balancing mechanism and the first temperature sensor are connected to the self-purification temperature sensor through electrical signals.

[0012] The control cabinet sends an electrical signal to open the first solenoid valve tube, and the chemical gas enters the straight tube from the air inlet pipe through the first solenoid valve tube, the first temperature sensor, the air inlet, and the third through hole. The front air balancing mechanism evenly discharges air away from the air inlet, so that the chemical gas flows evenly to the tube mechanism. The appropriate gas flow rate can promote heat transfer and improve condensation efficiency. The chemical gas contacts the condensation tube and completes heat exchange with the refrigerant, condenses into liquid and falls at the bottom of the straight tube. The control cabinet sends an electrical signal to open the second solenoid valve tube, and the condensate is discharged through the drain port, the self-cleaning temperature sensor, and the second solenoid valve tube into the drain pipe. The rear air balancing mechanism evenly discharges air away from the air inlet, so that the uncondensed chemical gas enters the next heat exchange section to continue heat exchange and condensation.

[0013] Furthermore, the front air balancing mechanism has the same structure as the rear air balancing mechanism. The front air balancing mechanism includes a first ring frame, the first ring frame is provided with a third through hole, the first ring frame is fixedly connected to the straight pipe, the third through hole is fixedly connected to the air inlet, and the straight pipe is also provided with a first side groove and a second side groove. The front air balancing mechanism is fixedly connected to the first side groove, and the rear air balancing mechanism is fixedly connected to the second side groove.

[0014] When the self-cleaning temperature sensor detects that the temperature of the passing condensate does not meet the expected condensation state, that is, there are two situations: poor contact between the chemical gas and the condenser tubes or scale on the condenser tubes that blocks heat exchange, the self-cleaning temperature sensor sends an electrical signal to the front air equalization mechanism to adjust its flow rate. When the chemical gas flow rate remains unchanged, the outlet duct area is reduced and the gas flow rate is increased, which can increase the kinetic energy of the chemical gas. After the chemical gas kinetic energy increases, the diffusion volume increases after it hits the condenser tubes, allowing the chemical gas to fully contact the condenser tubes and improve condensation efficiency. After condensation is completed, the two ends of the heat exchange section are closed, and the rear air equalization mechanism discharges air toward the side close to the air inlet, with the wind intensity decreasing from strong to weak. The front air equalization mechanism discharges air away from the air inlet, with the wind intensity decreasing from weak to strong. The front and rear air equalization mechanisms discharge air in opposite directions, creating a dividing line between the two opposing air flows. The dividing point of the two opposing air flows moves back and forth as the air outlet intensity changes on both sides. At this time, cleaning liquid is injected into the straight pipe through the air inlet pipe. The cleaning liquid reciprocates in the straight pipe, which can effectively remove scale on the condenser tube.

[0015] Furthermore, the tube array mechanism also includes a first partition plate, a second partition plate, a transverse plate, a liquid inlet pipe, a liquid outlet pipe and a condensation bend pipe. The transverse plate is fixedly connected to the first partition plate and the first side pipe, the second partition plate is fixedly connected to the second side pipe, the first side pipe is provided with a lower through hole and an upper through hole, the liquid inlet pipe is fixedly connected to the lower through hole, the liquid outlet pipe is fixedly connected to the upper through hole, the first partition plate is provided with a first through hole, the second partition plate is provided with a second through hole, the first through hole, the second through hole and the condensation bend are each provided with several groups, and the condensation bend is fixedly connected to the first through hole and the second through hole.

[0016] Refrigerant is injected into the first side tube through the liquid inlet pipe and the lower through hole, and the refrigerant passes through the first through hole into several groups of condensing elbows below the horizontal plate. The refrigerant flows into the second side tube through several groups of second through holes and condensing elbows below the horizontal plate, and flows back to the first side tube through several groups of second through holes and condensing elbows above the horizontal plate, and then passes through the upper through hole and the liquid outlet pipe to complete the refrigerant circulation. The chemical gas completes heat exchange and condensation with the refrigerant in the condensing elbow in the straight tube.

[0017] Furthermore, the front air equalizing mechanism also includes a first motor, an impeller and an air regulating mechanism. The first motor is fixedly connected to the first ring frame, and the output end of the first motor is fixedly connected to the impeller. The air regulating mechanism includes a circular grille, a side frame and a second motor. The circular grille is fixedly connected to the straight pipe, and the side frame is fixedly connected to the first side slot. The first motor and the second motor are both connected to the self-cleaning temperature sensor through electrical signals.

[0018] During the condensation operation, the first motor outputs torque to the impeller, and the chemical gas enters the straight pipe from the intake pipe through the first solenoid valve pipe, the first temperature sensor, the air inlet, and the third through hole. The impeller rotates to divide the chemical gas into horizontal airflows through the circular grid and into the straight pipe. The horizontal airflows are evenly divided into several levels and contact the condensation elbow, and the chemical gas and the refrigerant complete heat exchange and condensation.

[0019] Furthermore, the air adjustment mechanism also includes an arc plate and a connecting rod. The circular grille is provided with side holes. The side holes, arc plates and connecting rods are provided in several groups. The second motor is fixedly connected to the side frame. The output end of the second motor is connected to the connecting rod through a belt drive. The connecting rod is rotatably connected to the side hole and the side frame, and the arc plate is fixedly connected to the connecting rod.

[0020] When the self-cleaning temperature sensor detects that the temperature of the passing condensate does not meet the expected condensation state, and the chemical gas is not in good contact with the condensation tubes, the self-cleaning temperature sensor sends an electrical signal to the second motor, and the second motor outputs torque, which drives several groups of connecting rods to rotate in the side holes through belts. The connecting rods drive the arc plate to rotate, adjust the angle between the arc plate and the circular grid, and reduce the air outlet area. When the chemical gas flow rate remains unchanged, the air outlet area is reduced and the gas flow rate increases, which can increase the kinetic energy of the chemical gas, make the chemical gas fully contact with the condensation tubes, and improve the condensation efficiency.

[0021] Furthermore, the self-cleaning temperature sensor includes an outer tube, a thermocouple resistor, an electrode seat, a second ring frame, a third motor and a fan wheel. The outer tube is fixedly connected to the second solenoid valve tube, the electrode seat and the second ring frame. The thermocouple resistor is fixedly connected to the electrode seat. The electrode seat is connected to the first motor, the second motor and the first temperature sensor through electrical signals. The second ring frame is fixedly connected to the third motor, and the output end of the third motor is fixedly connected to the fan wheel.

[0022] After the heat exchange is completed, the liquid is condensed into liquid and falls to the bottom of the straight tube. It is discharged into the drain pipe through the drain port, the self-cleaning temperature sensor, and the second solenoid valve tube. The condensed liquid mixed with some chemical gas passes through the thermocouple resistor, and the temperature change is identified by the thermocouple resistor. The electrode seat sends an electrical signal to the first motor, the second motor, and the first temperature sensor. After the drainage is completed, the third motor outputs torque to the fan wheel. The fan wheel rotates to blow air to the thermocouple resistor to avoid residual liquid on the thermocouple resistor and cause it to corrode and fail.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a condensing mechanism, and by respectively inputting different refrigerants into the multi-stage heat exchange sections, the temperature of the chemical gas is gradually reduced to approach its condensation point, completing multi-stage heat exchange condensation, so that the temperature difference is greatly reduced, the heat transfer efficiency is significantly improved, and the recovery rate of the chemical condensate is improved. When the condensation point temperature of the chemical gas is high and multi-stage cooling is not required, the heat exchange mechanisms at each stage are disconnected, and the series condensation is switched to independent condensation. The three groups of heat exchange devices can simultaneously heat exchange and condense the same batch of chemical gases, thereby improving the condensation efficiency of the chemical gas; the present invention designs a front air-equalizing mechanism and a rear air-equalizing mechanism, and the fan impeller evenly discharges air away from the air inlet, so that the chemical gas flows evenly to the condensation tubes. The appropriate gas flow rate can promote heat transfer and improve condensation efficiency. The rear air-equalizing mechanism evenly discharges air in the direction away from the air inlet, so that the uncondensed chemical gas passes into the next heat exchange section to continue heat exchange and condensation. When the condensation passing through is detected The liquid temperature does not meet expectations, that is, there are two situations: poor contact between the chemical gas and the condensation tubes and scaling on the condensation tubes that blocks heat exchange. The second motor adjusts the angle between the arc plate and the circular grille. When the chemical gas flow rate remains unchanged, the outlet duct area is reduced, and the gas flow rate increases, which can increase the kinetic energy of the chemical gas. After the kinetic energy of the chemical gas increases, the diffusion volume increases after it hits the condensation tubes, so that the chemical gas is in full contact with the condensation tubes, thereby improving the condensation efficiency; after the condensation is completed, the front air equalization mechanism and the rear air equalization mechanism discharge air in opposite directions, and a dividing line is generated by the two opposing air flows. The dividing point of the two opposing air flows moves back and forth as the air outlet intensity on both sides changes. Cleaning liquid is injected into the straight tube through the air inlet pipe, and the cleaning liquid reciprocates in the straight tube, which can effectively remove the scaling on the condensation tube; the present invention has a multi-section switchable series and parallel heat exchange section design, which improves the recovery rate of chemical condensate and the condensation efficiency of chemical gas. After the condensation is completed, the scaling on the condensation tube can be effectively cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the segmented mechanism structure of the present invention;

[0026] Figure 3 It is a schematic structural diagram of the opening and closing mechanism of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the secondary heat exchange mechanism of the present invention;

[0028] Figure 5 It is a partial cross-sectional view of the secondary heat exchange mechanism of the present invention;

[0029] Figure 6 This is a schematic structural diagram of the front air distribution mechanism of the present invention;

[0030] Figure 7This is a schematic structural diagram of the air regulating mechanism of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the self-cleaning temperature sensor of the present invention.

[0032] Figure: 1. Base frame; 2. Control cabinet; 3. Assembly frame; 4. Inlet pipe; 5. Drain pipe; 6. Condensation mechanism; 61. Front baffle; 62. Rear baffle; 63. Segmentation mechanism; 631. Horizontal frame; 632. Servo motor; 633. First gear; 634. Opening and closing mechanism; 635. Outer plate; 6351. Opening; 6352. Boss; 636. Gear ring; 6361. Arc groove; 637. Arc rod; 638. Arc petal; 639 , assembly ring; 64, primary heat exchange mechanism; 65, secondary heat exchange mechanism; 651, straight pipe; 6511, air inlet; 6512, liquid discharge port; 6513, first side groove; 6514, second side groove; 6515, first side port; 6516, second side port; 652, tube structure; 6521, first side tube; 65211, lower through hole; 65212, upper through hole; 6522, second side tube; 6523, first partition plate; 6 5231, first through hole; 6524, second partition plate; 65241, second through hole; 6525, horizontal plate; 6526, liquid inlet pipe; 6527, liquid outlet pipe; 6528, condenser elbow; 653, first solenoid valve pipe; 654, second solenoid valve pipe; 655, front air distribution mechanism; 6551, first ring frame; 65511, third through hole; 6552, first motor; 6553, impeller; 6554, air adjustment mechanism; 6555, circular grille; 65551, side hole; 6556, side frame; 6557, second motor; 6558, arc plate; 6559, connecting rod; 656, rear air equalization mechanism; 657, first temperature sensor; 658, self-cleaning temperature sensor; 6581, outer cylinder; 6582, thermocouple resistor; 6583, electrode holder; 6584, second ring frame; 6585, third motor; 6586, fan wheel; 66, three-stage heat exchange mechanism. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 efforts are within the scope of protection of the present invention.

[0034] like Figure 1As shown, the present invention provides a technical solution of a condensing device with a multi-stage heat exchange function, including a base frame 1, a control cabinet 2, an assembly frame 3, an air inlet pipe 4, a drain pipe 5 and a condensing mechanism 6. The base frame 1 is fixedly connected to the control cabinet 2 and the assembly frame 3. The condensing mechanism 6 includes a primary heat exchange mechanism 64, a secondary heat exchange mechanism 65 and a tertiary heat exchange mechanism 66. The primary heat exchange mechanism 64, the secondary heat exchange mechanism 65 and the tertiary heat exchange mechanism 66 are all connected to the control cabinet 2 through electrical signals. The primary heat exchange mechanism 64, the secondary heat exchange mechanism 65 and the tertiary heat exchange mechanism 66 are all fixedly connected to the assembly frame 3. The primary heat exchange mechanism 64, the secondary heat exchange mechanism 65 and the tertiary heat exchange mechanism 66 are all fixedly connected to the air inlet pipe 4. The primary heat exchange mechanism 64, the secondary heat exchange mechanism 65 and the tertiary heat exchange mechanism 66 are all fixedly connected to the drain pipe 5.

[0035] The present invention is a device for condensing chemical hot gas. High-temperature chemical gas is input through the air inlet pipe 4, and different refrigerants are circulated into the first-stage heat exchange mechanism 64, the second-stage heat exchange mechanism 65, and the third-stage heat exchange mechanism 66 respectively. The control cabinet 2 distributes the high-temperature gas into the first-stage heat exchange mechanism 64, and the high-temperature gas completes multi-stage heat exchange in the first-stage heat exchange mechanism 64, the second-stage heat exchange mechanism 65, and the third-stage heat exchange mechanism 66 in sequence, so that the high-temperature gas and different refrigerants are heat exchanged and condensed step by step, which greatly improves the condensation efficiency of the chemical gas. The generated liquid is finally collected and discharged by the drain pipe 5. The first-stage heat exchange mechanism 64, the second-stage heat exchange mechanism 65, and the third-stage heat exchange mechanism 66 can all be independently closed and independently heat exchanged.

[0036] like Figure 1 、 Figure 2 As shown, the condensing mechanism 6 also includes a front baffle 61, a rear baffle 62 and a segmented mechanism 63. The front baffle 61 is fixedly connected to the side of the first-stage heat exchange mechanism 64 away from the second-stage heat exchange mechanism 65, and the rear baffle 62 is fixedly connected to the side of the third-stage heat exchange mechanism 66 away from the second-stage heat exchange mechanism 65. The segmented mechanism 63 includes a servo motor 632 and an opening and closing mechanism 634. The servo motor 632 and the opening and closing mechanism 634 are each provided with two groups. One group of opening and closing mechanisms 634 is fixedly connected to the first-stage heat exchange mechanism 64 and the second-stage heat exchange mechanism 65, and the other group of opening and closing mechanisms 634 is fixedly connected to the second-stage heat exchange mechanism 65 and the third-stage heat exchange mechanism 66. The first-stage heat exchange mechanism 64, the third-stage heat exchange mechanism 66 and the second-stage heat exchange mechanism 65 have the same structure. The servo motor 632 is connected to the control cabinet 2 through an electrical signal.

[0037] When the heat exchange efficiency of the first-stage heat exchange mechanism 64 is poor, an electrical signal can be sent to the servo motor 632 through the control cabinet 2, so that the opening and closing mechanism 634 isolates the first-stage heat exchange mechanism 64 and the second-stage heat exchange mechanism 65, and the air inlet pipe 4 directly transports the chemical gas to the second-stage heat exchange mechanism 65, and the chemical gas completes the heat exchange through the second-stage heat exchange mechanism 65 and the third-stage heat exchange mechanism 66 in turn. In the multi-stage heat exchange mode, different refrigerants are respectively input into the first-stage heat exchange mechanism 64, the second-stage heat exchange mechanism 65, and the third-stage heat exchange mechanism 66, so that the chemical gas The body temperature is gradually reduced to approach its condensation point, completing multi-stage heat exchange condensation, which greatly reduces the temperature difference and significantly improves the heat transfer efficiency. At the same time, the recovery rate of the chemical condensate is improved. When the condensation point temperature of the chemical gas is high and multi-stage cooling is not required, the opening and closing mechanism 634 respectively isolates the first-stage heat exchange mechanism 64 from the second-stage heat exchange mechanism 65, and the second-stage heat exchange mechanism 65 from the third-stage heat exchange mechanism 66, switching the series condensation to independent condensation. The three sets of heat exchange devices can simultaneously heat exchange and condense the same batch of chemical gases, thereby improving the condensation efficiency of the chemical gases.

[0038] like Figure 2 、 Figure 3 As shown, the segmentation mechanism 63 also includes a cross frame 631 and a first gear 633. The cross frame 631 is fixedly connected to the assembly frame 3 and the servo motor 632. The opening and closing mechanism 634 includes an outer disk 635, a gear ring 636, an arc rod 637, an arc petal 638 and an assembly ring 639. The secondary heat exchange mechanism 65 includes a straight tube 651. The outer disk 635 is fixedly connected to the straight tube 651. The first gear 633 is engaged with the tooth surface of the gear ring 636. The outer disk 635 is provided with an opening 6351 and a protrusion 636. 352, an opening 6351 is provided at the center of the outer disk 635, an arc groove 6361 is provided on the gear ring 636, and the boss 6352, arc groove 6361, arc rod 637, and arc petal 638 are provided in a plurality of groups, and the plurality of bosses 6352, arc groove 6361, arc rod 637, and arc petal 638 are evenly distributed along the circumference of the outer disk 635, the boss 6352 is slidingly connected to the arc groove 6361, the arc rod 637 is rotatably connected to the gear ring 636, and the arc petal 638, and the arc petal 638 is rotatably connected to the assembly ring 639.

[0039] When the opening and closing mechanism 634 separates the primary heat exchange mechanism 64 from the secondary heat exchange mechanism 65, the servo motor 632 outputs torque to the first gear 633, which engages with the tooth surface of the gear ring 636 through the first gear 633. While the protrusion 6352 slides along the arc groove 6361, the gear ring 636 drives the arc petals 638 to rotate around the assembly ring 639 through the arc rod 637. A number of circumferentially evenly distributed arc petals 638 rotate around the assembly ring 639, so that the arc petals 638 are closed to block the opening 6351, so that the outer disk 635 is sealed to separate the two sides.

[0040] like Figure 4 、 Figure 5As shown, the secondary heat exchange mechanism 65 also includes a tube structure 652, a first solenoid valve tube 653, a second solenoid valve tube 654, a front air balancing mechanism 655, a rear air balancing mechanism 656, a first temperature sensor 657 and a self-cleaning temperature sensor 658. The straight tube 651 is provided with an air inlet 6511, a liquid discharge port 6512, a first side port 6515 and a second side port 6516. The first solenoid valve tube 653 is fixedly connected to the air inlet 6511 and the first temperature sensor 657. The second solenoid valve tube 654 is fixedly connected to the liquid discharge port 656. 512 and the self-purification temperature sensor 658 are fixedly connected, the first solenoid valve tube 653 and the second solenoid valve tube 654 are connected to the control cabinet 2 through electrical signals, the tube array mechanism 652 includes a first side tube 6521 and a second side tube 6522, the first side tube 6521 is fixedly connected to the first side port 6515, and the second side tube 6522 is fixedly connected to the second side port 6516, the front air balancing mechanism 655, the rear air balancing mechanism 656, and the first temperature sensor 657 are all connected to the self-purification temperature sensor 658 through electrical signals.

[0041] The control cabinet 2 sends an electrical signal to open the first solenoid valve tube 653, and the chemical gas is introduced into the straight tube 651 from the air inlet pipe 4 through the first solenoid valve tube 653, the first temperature sensor 657, the air inlet 6511, and the third through hole 65511. The front air balancing mechanism 655 evenly discharges air away from the air inlet 6511, so that the chemical gas flows evenly to the tube structure 652. The appropriate gas flow rate can promote heat transfer and improve the condensation efficiency. The chemical gas contacts the condensation tube and completes heat exchange with the refrigerant, condenses into liquid and falls to the bottom of the straight tube 651. The control cabinet 2 sends an electrical signal to open the second solenoid valve tube 654, and the condensate is discharged into the drain pipe 5 through the drain port 6512, the self-cleaning temperature sensor 658, and the second solenoid valve tube 654. The rear air balancing mechanism 656 evenly discharges air away from the air inlet 6511, so that the uncondensed chemical gas is introduced into the next heat exchange section to continue heat exchange and condensation.

[0042] like Figure 4 、 Figure 5 As shown, the front air balancing mechanism 655 and the rear air balancing mechanism 656 have the same structure. The front air balancing mechanism 655 includes a first ring frame 6551. The first ring frame 6551 is provided with a third through hole 65511. The first ring frame 6551 is fixedly connected to the straight pipe 651. The third through hole 65511 is fixedly connected to the air inlet 6511. The straight pipe 651 is also provided with a first side groove 6513 and a second side groove 6514. The front air balancing mechanism 655 is fixedly connected to the first side groove 6513, and the rear air balancing mechanism 656 is fixedly connected to the second side groove 6514.

[0043] When the self-cleaning temperature sensor 658 detects that the temperature of the passing condensate does not meet the expected condensation state, that is, there are two situations: poor contact between the chemical gas and the condensation tubes and scaling on the condensation tubes that blocks heat exchange, the self-cleaning temperature sensor 658 sends an electrical signal to the front air equalization mechanism 655 to adjust its flow rate. When the chemical gas flow rate remains unchanged, the air outlet area is reduced and the gas flow rate increases, which can increase the kinetic energy of the chemical gas. After the kinetic energy of the chemical gas increases, the diffusion volume increases after it hits the condensation tubes, so that the chemical gas is fully in contact with the condensation tubes, thereby improving the condensation efficiency. After the condensation is completed, After completion, both ends of the heat exchange section are closed, and the rear air balancing mechanism 656 discharges air toward the side close to the air inlet 6511, and the wind intensity decreases from strong to weak. The front air balancing mechanism 655 discharges air toward the side away from the air inlet 6511, and the wind intensity decreases from weak to strong. The front air balancing mechanism 655 and the rear air balancing mechanism 656 discharge air in opposite directions, and a dividing line is generated by the two opposing air flows. The dividing point of the two opposing air flows moves back and forth as the air outlet intensity on both sides changes. At this time, cleaning liquid is injected into the straight pipe 651 through the air inlet pipe 4, and the cleaning liquid reciprocates in the straight pipe 651, which can effectively remove scale on the condenser tube.

[0044] like Figure 4 、 Figure 5 As shown, the tube array mechanism 652 also includes a first partition plate 6523, a second partition plate 6524, a transverse plate 6525, a liquid inlet pipe 6526, a liquid outlet pipe 6527 and a condensation elbow 6528. The transverse plate 6525 is fixedly connected to the first partition plate 6523 and the first side pipe 6521. The second partition plate 6524 is fixedly connected to the second side pipe 6522. The first side pipe 6521 is provided with a lower through hole 65211 and an upper through hole 65212. The liquid inlet pipe 6526 is fixedly connected to the lower through hole 65211, the liquid outlet pipe 6527 is fixedly connected to the upper through hole 65212, the first partition plate 6523 is provided with a first through hole 65231, and the second partition plate 6524 is provided with a second through hole 65241. The first through hole 65231, the second through hole 65241 and the condensation elbow 6528 are each provided with several groups, and the condensation elbow 6528 is fixedly connected to the first through hole 65231 and the second through hole 65241.

[0045] Refrigerant is injected into the first side tube 6521 through the liquid inlet pipe 6526 and the lower through hole 65211, and the refrigerant passes through the first through hole 65231 into the several groups of condensation elbows 6528 below the transverse plate 6525. The refrigerant flows into the second side tube 6522 through the several groups of condensation elbows 6528 below the transverse plate 6525, and flows back to the first side tube 6521 through the several groups of second through holes 65241 above the transverse plate 6525 and the condensation elbows 6528 above the transverse plate 6525, through the upper through hole 65212 and the liquid outlet pipe 6527 to complete the refrigerant circulation. The chemical gas completes heat exchange and condensation with the refrigerant in the condensation elbows 6528 in the straight tube 651.

[0046] like Figure 6 、 Figure 7 As shown, the front air equalizing mechanism 655 also includes a first motor 6552, an impeller 6553 and an air regulating mechanism 6554. The first motor 6552 is fixedly connected to the first ring frame 6551, and the output end of the first motor 6552 is fixedly connected to the impeller 6553. The air regulating mechanism 6554 includes a circular grille 6555, a side frame 6556 and a second motor 6557. The circular grille 6555 is fixedly connected to the straight pipe 651, and the side frame 6556 is fixedly connected to the first side slot 6513. The first motor 6552 and the second motor 6557 are both connected to the self-purification temperature sensor 658 through electrical signals.

[0047] During the condensation operation, the first motor 6552 outputs torque to the impeller 6553, and the chemical gas enters the straight pipe 651 from the intake pipe 4 through the first solenoid valve tube 653, the first temperature sensor 657, the air inlet 6511, and the third through hole 65511. The impeller 6553 rotates to divide the chemical gas into horizontal airflows through the circular grille 6555 and blows it into the straight pipe 651. The horizontal airflows that are evenly divided into several parts contact the condensation bend pipe 6528, and the chemical gas and the refrigerant complete heat exchange and condensation.

[0048] like Figure 6 、 Figure 7 As shown, the air adjustment mechanism 6554 also includes an arc plate 6558 and a connecting rod 6559. The circular grille 6555 is provided with a side hole 65551. The side hole 65551, the arc plate 6558 and the connecting rod 6559 are all provided with several groups. The second motor 6557 is fixedly connected to the side frame 6556. The output end of the second motor 6557 is connected to the connecting rod 6559 through a belt drive. The connecting rod 6559 is rotatably connected to the side hole 65551 and the side frame 6556. The arc plate 6558 is fixedly connected to the connecting rod 6559.

[0049] When the self-purification temperature sensor 658 detects that the temperature of the passing condensate does not meet the expected condensation state, and the chemical gas is not in good contact with the condensation tubes, the self-purification temperature sensor 658 sends an electrical signal to the second motor 6557. The second motor 6557 outputs torque, and drives several groups of connecting rods 6559 to rotate in the side hole 65551 through the belt. The connecting rod 6559 drives the arc plate 6558 to rotate, and adjusts the angle between the arc plate 6558 and the circular grille 6555. The area of ​​the air outlet is reduced. When the chemical gas flow rate remains unchanged, the area of ​​the air outlet is reduced, and the gas flow rate is increased, the kinetic energy of the chemical gas can be increased, so that the chemical gas is in full contact with the condensation tubes, and the condensation efficiency is improved.

[0050] like Figure 8As shown, the self-cleaning temperature sensor 658 includes an outer tube 6581, a thermocouple resistor 6582, an electrode holder 6583, a second ring frame 6584, a third motor 6585 and a fan wheel 6586. The outer tube 6581 is fixedly connected to the second solenoid valve tube 654, the electrode holder 6583 and the second ring frame 6584. The thermocouple resistor 6582 is fixedly connected to the electrode holder 6583. The electrode holder 6583 is connected to the first motor 6552, the second motor 6557 and the first temperature sensor 657 through electrical signals. The second ring frame 6584 is fixedly connected to the third motor 6585. The output end of the third motor 6585 is fixedly connected to the fan wheel 6586.

[0051] After the heat exchange is completed, the liquid is condensed and falls to the bottom of the straight tube 651, and is discharged into the drain pipe 5 through the drain port 6512, the self-cleaning temperature sensor 658, and the second solenoid valve tube 654. The condensed liquid mixed with part of the chemical gas passes through the thermocouple resistor 6582, and the temperature change is identified by the thermocouple resistor 6582. The electrode holder 6583 sends an electrical signal to the first motor 6552, the second motor 6557, and the first temperature sensor 657. After the drainage is completed, the third motor 6585 outputs torque to the impeller 6586, and the impeller 6586 rotates to blow air to the thermocouple resistor 6582 to prevent residual liquid on the thermocouple resistor 6582 from corroding and failing.

[0052] Working principle of the present invention: The present invention is a device for condensing chemical hot gas, high-temperature chemical gas is input through the air inlet pipe 4, and different refrigerants are input into different heat exchange sections respectively, so that the temperature of the chemical gas is gradually reduced to its condensation point, completing multi-stage heat exchange condensation, so that the temperature difference is greatly reduced, the heat transfer efficiency is significantly improved, and the recovery rate of the chemical condensate is improved. When the condensation point temperature of the chemical gas is high and multi-stage cooling is not required, the opening and closing mechanism 634 isolates each stage of the heat exchange section respectively, and switches the series condensation to an independent condensation. The same batch of chemical gases can be heat exchanged and condensed at the same time, thereby improving the condensation efficiency of the chemical gas. The control cabinet 2 sends an electrical signal to open the first solenoid valve tube 653, and the chemical gas is introduced into the straight pipe 651 from the air inlet pipe 4. The front air equalization mechanism 655 evenly discharges air away from the air inlet 6511, so that the chemical gas flows evenly to the tube array mechanism 652. The appropriate gas flow rate can promote heat transfer and improve the condensation efficiency. 8, the refrigerant is injected into the refrigerant to complete the refrigerant circulation, the chemical gas and the refrigerant complete the heat exchange, condense into liquid and fall to the bottom of the straight tube 651, and are discharged into the drain pipe 5 through the drain port 6512, and the rear air equalization mechanism 656 discharges air evenly in the direction away from the air inlet 6511, so that the uncondensed chemical gas is passed into the next heat exchange section to continue heat exchange and condensation. When the self-cleaning temperature sensor 658 detects that the temperature of the condensate passing through does not meet the expectations, that is, there are two situations: poor contact between the chemical gas and the condensation tubes and scaling on the condensation tubes that blocks heat exchange, the front air equalization mechanism 655 is adjusted. When the chemical gas flow rate remains unchanged, the air outlet area is reduced and the gas flow rate is increased, which can increase the kinetic energy of the chemical gas. After the kinetic energy of the chemical gas increases, the diffusion volume increases after it hits the condensation tubes, so that the chemical gas is fully in contact with the condensation tubes, thereby improving the condensation efficiency. After the condensation is completed, the cleaning liquid is injected into the straight tube 651 through the air inlet pipe 4. The cleaning liquid reciprocates in the straight tube 651, which can effectively remove the scaling on the condensation tubes.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A condensing device with multi-stage heat exchange function, characterized in that: The condensing device comprises a base frame (1), a control cabinet (2), an assembly frame (3), an air inlet pipe (4), a liquid discharge pipe (5) and a condensing mechanism (6); the base frame (1) is fixedly connected to the control cabinet (2) and the assembly frame (3); the condensing mechanism (6) comprises a primary heat exchange mechanism (64), a secondary heat exchange mechanism (65) and a tertiary heat exchange mechanism (66); the primary heat exchange mechanism (64), the secondary heat exchange mechanism (65) and the tertiary heat exchange mechanism (66) are connected to the control cabinet (2) via electrical signals; the primary heat exchange mechanism (64), the secondary heat exchange mechanism (65) and the tertiary heat exchange mechanism (66) are fixedly connected to the assembly frame (3); the primary heat exchange mechanism (64), the secondary heat exchange mechanism (65) and the tertiary heat exchange mechanism (66) are fixedly connected to the air inlet pipe (4); and the primary heat exchange mechanism (64), the secondary heat exchange mechanism (65) and the tertiary heat exchange mechanism (66) are fixedly connected to the liquid discharge pipe (5); The condensing mechanism (6) further comprises a front baffle (61), a rear baffle (62) and a segmentation mechanism (63), wherein the front baffle (61) is fixedly connected to the side of the first-stage heat exchange mechanism (64) away from the second-stage heat exchange mechanism (65), and the rear baffle (62) is fixedly connected to the side of the third-stage heat exchange mechanism (66) away from the second-stage heat exchange mechanism (65). The segmentation mechanism (63) comprises a servo motor (632) and an opening and closing mechanism (634). The mechanism (634) is provided with two groups, one group of the opening and closing mechanism (634) is fixedly connected to the first-stage heat exchange mechanism (64) and the second-stage heat exchange mechanism (65), and the other group of the opening and closing mechanism (634) is fixedly connected to the second-stage heat exchange mechanism (65) and the third-stage heat exchange mechanism (66). The first-stage heat exchange mechanism (64), the third-stage heat exchange mechanism (66) and the second-stage heat exchange mechanism (65) have the same structure, and the servo motor (632) is connected to the control cabinet (2) via an electrical signal. The segmentation mechanism (63) further includes a cross frame (631) and a first gear (633). The cross frame (631) is fixedly connected to the assembly frame (3) and the servo motor (632). The output end of the servo motor (632) is fixedly connected to the first gear (633). The opening and closing mechanism (634) includes an outer disk (635), a gear ring (636), an arc rod (637), an arc petal (638) and an assembly ring (639). The secondary heat exchange mechanism (65) includes a straight tube (651). The outer disk (635) is fixedly connected to the straight tube (651). The first gear (633) meshes with the tooth surface of the gear ring (636). The outer disk (635) is provided with an opening ( 6351) and a boss (6352), the opening (6351) is provided at the center of the outer disk (635), the gear ring (636) is provided with an arc groove (6361), the boss (6352), the arc groove (6361), the arc rod (637), and the arc petal (638) are provided in a plurality of groups, and the plurality of groups of bosses (6352), arc grooves (6361), arc rods (637), and arc petals (638) are uniformly distributed along the circumference of the outer disk (635), the boss (6352) is slidably connected to the arc groove (6361), the arc rod (637) is rotatably connected to the gear ring (636), and the arc petal (638), and the arc petal (638) is rotatably connected to the assembly ring (639); The secondary heat exchange mechanism (65) further comprises a tube arrangement (652), a first electromagnetic valve tube (653), a second electromagnetic valve tube (654), a front air balancing mechanism (655), a rear air balancing mechanism (656), a first temperature sensor (657) and a self-cleaning temperature sensor (658); the straight tube (651) is provided with an air inlet (6511), a liquid discharge port (6512), a first side port (6515) and a second side port (6516); the first electromagnetic valve tube (653) is fixedly connected to the air inlet (6511) and the first temperature sensor (657); the second electromagnetic valve tube (654) is fixedly connected to the liquid discharge port (6512); 512), and the self-cleaning temperature sensor (658) are all fixedly connected, the first solenoid valve tube (653) and the second solenoid valve tube (654) are both connected to the control cabinet (2) via electrical signals, the tube arrangement mechanism (652) comprises a first side tube (6521) and a second side tube (6522), the first side tube (6521) is fixedly connected to the first side port (6515), and the second side tube (6522) is fixedly connected to the second side port (6516), and the front air balancing mechanism (655), the rear air balancing mechanism (656), and the first temperature sensor (657) are all connected to the self-cleaning temperature sensor (658) via electrical signals; The front air balancing mechanism (655) and the rear air balancing mechanism (656) have the same structure. The front air balancing mechanism (655) comprises a first ring frame (6551), the first ring frame (6551) is provided with a third through hole (65511), the first ring frame (6551) is fixedly connected to the straight pipe (651), the third through hole (65511) is fixedly connected to the air inlet (6511), the straight pipe (651) is further provided with a first side groove (6513) and a second side groove (6514), the front air balancing mechanism (655) is fixedly connected to the first side groove (6513), and the rear air balancing mechanism (656) is fixedly connected to the second side groove (6514).

2. The condensing device with multi-stage heat exchange function according to claim 1, characterized in that: The tube array mechanism (652) further includes a first partition plate (6523), a second partition plate (6524), a transverse plate (6525), a liquid inlet pipe (6526), ​​a liquid outlet pipe (6527) and a condensation elbow pipe (6528). The transverse plate (6525) is fixedly connected to the first partition plate (6523) and the first side pipe (6521). The second partition plate (6524) is fixedly connected to the second side pipe (6522). The first side pipe (6521) is provided with a lower through hole (65211) and an upper through hole (65212). The liquid inlet pipe ( 6526) is fixedly connected to the lower through hole (65211), the liquid outlet pipe (6527) is fixedly connected to the upper through hole (65212), the first partition plate (6523) is provided with a first through hole (65231), the second partition plate (6524) is provided with a second through hole (65241), the first through hole (65231), the second through hole (65241), and the condensation elbow (6528) are each provided with a plurality of groups, and the condensation elbow (6528) is fixedly connected to the first through hole (65231) and the second through hole (65241).

3. The condensing device with multi-stage heat exchange function according to claim 1, characterized in that: The front air distribution mechanism (655) further comprises a first motor (6552), an impeller (6553) and an air adjustment mechanism (6554), wherein the first motor (6552) is fixedly connected to the first ring frame (6551), and the output end of the first motor (6552) is fixedly connected to the impeller (6553). The air adjustment mechanism (6554) comprises a circular grille (6555), a side frame (6556) and a second motor (6557), wherein the circular grille (6555) is fixedly connected to the straight pipe (651), and the side frame (6556) is fixedly connected to the first side slot (6513). The first motor (6552) and the second motor (6557) are both connected to the self-cleaning temperature sensor (658) via electrical signals.

4. The condensing device with multi-stage heat exchange function according to claim 3, characterized in that: The air regulating mechanism (6554) further includes an arc plate (6558) and a connecting rod (6559); a side hole (65551) is provided on the circular grille (6555); the side hole (65551), the arc plate (6558), and the connecting rod (6559) are each provided in a plurality of groups; the second motor (6557) is fixedly connected to the side frame (6556); the output end of the second motor (6557) is connected to the connecting rod (6559) via a belt drive; the connecting rod (6559) is rotatably connected to the side hole (65551) and the side frame (6556); and the arc plate (6558) is fixedly connected to the connecting rod (6559).

5. The condensing device with multi-stage heat exchange function according to claim 3, characterized in that: The self-cleaning temperature sensor (658) comprises an outer tube (6581), a thermocouple resistor (6582), an electrode holder (6583), a second ring frame (6584), a third motor (6585) and a fan wheel (6586). The outer tube (6581) is fixedly connected to the second solenoid valve tube (654), the electrode holder (6583) and the second ring frame (6584). The thermocouple resistor (6582) is fixedly connected to the electrode holder (6583). The electrode holder (6583) is connected to the first motor (6552), the second motor (6557) and the first temperature sensor (657) via electrical signals. The second ring frame (6584) is fixedly connected to the third motor (6585). The output end of the third motor (6585) is fixedly connected to the fan wheel (6586).

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