Semi-immersed electrode hot water boiler capable of stably operating
By using an insulated overflow cylinder to replace the traditional metal arc plate overflow cylinder in the electrode boiler, the problems of three-phase imbalance and overflow cylinder burning are solved, and the stable operation and service life of the boiler are achieved.
Patent Information
- Application Number
- CN202420129771.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-18
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-18
AI Technical Summary
In existing electrode boilers, the metal arc plate outside the overflow cylinder leads to three-phase imbalance, and the conductive current in the water can easily lead to local burning of the overflow cylinder, causing the boiler to be shut down.
The semi-immersed electrode hot water boiler design is used to replace the traditional metal arc plate overflow cylinder with insulated overflow cylinder, avoiding the conductive current passing through the metal arc plate, and solving the problems of three-phase imbalance and overflow cylinder burning.
The stable operation of the boiler is achieved, the three-phase imbalance and the burning loss caused by the increase in the overflow cylinder wall temperature is avoided, and the service life of the boiler is extended.
Smart Images
Figure CN222480764U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrode boiler, in particular to a semi-submerged electrode hot water boiler which can operate stably. Background Art
[0002] The electrode hot water boiler is a kind of boiler that uses the conductivity of water to directly convert electrical energy into thermal energy and heat the boiler water. The outside of the boiler is a closed pressure shell, commonly known as an outer cylinder. An inner cylinder insulated and isolated from the outer cylinder is arranged in the middle and upper part of the outer cylinder. The inner circulation inlet and outlet pipe interfaces and the water supply pipe port are arranged at the bottom of the outer cylinder respectively. A water supply pump is connected to the water supply port, and desalted water is continuously replenished to the boiler through the water supply pump. An external circulation pipeline is connected to the water outlet of the circulating water circuit, and a circulating water pump and a valve are arranged on the external circulation pipeline. The inlet of the circulating water circuit is connected to the inner circulation inlet pipe interface. The inner The inner drum water inlet pipe is connected to the circulation water inlet pipe interface, and the other end of the inner drum water inlet pipe is connected to the inner drum; the desalted water first enters the bottom of the outer drum through the water feed pump, and then enters the inner drum through the circulation pipeline; an electrode insulation seat is arranged on the top of the boiler outer drum, and an insulating porcelain bottle that penetrates into the inner part of the outer drum is arranged in the electrode insulation seat, and the lower end of the conductive rod passes through the insulating porcelain bottle from the outside to the inside and is suspended in the desalted water in the boiler drum, and three electrode disks arranged symmetrically with respect to the center are arranged at the lower end of the conductive rod, and a number of electrode rods are arranged under the electrode disk, and the electrode rods immersed in the desalted water of the inner drum heat the desalted water in the inner drum through three-phase current.
[0003] In the center of the lower bottom surface of the inner cylinder in the existing electrode boiler furnace, a liftable overflow cylinder is arranged, and the water in the inner cylinder can overflow to the bottom of the outer cylinder through the overflow cylinder. The water level of the desalted water in the inner cylinder is controlled by the lifting and lowering of the overflow cylinder, thereby adjusting the thermal power of the boiler; the overflow cylinder in the existing equipment is suspended in the center above the inner cylinder, and a suspension mechanism is arranged on the outer shell of the top of the boiler. The suspension rod of the suspension mechanism is extended into the boiler and connected with the herringbone bracket in the upper port of the inner cylinder. The suspension mechanism controls the lifting and lowering of the suspension rod to realize the lifting and lowering of the overflow cylinder; in order to firmly fix the herringbone bracket in the upper port of the inner cylinder, the existing overflow cylinder and the herringbone bracket are connected in the following way: three sections of metal arc plates are arranged inside and outside the overflow cylinder respectively, holes are opened at both ends of the arc plates and at corresponding positions of the overflow cylinder, and bolts are used to sequentially tighten the overflow cylinder from the outside. The outer arc plate, the overflow tube and the inner arc plate are passed through, and the inner arc plate is fixed in the upper port of the overflow tube. Then the outer end of the herringbone bracket is fixedly connected to the inner arc plate, and the lower end of the suspension rod is fixedly connected to the center of the herringbone bracket. The desalted water in the inner tube enters the overflow tube through the three gap spaces of the herringbone bracket for overflow. Since the overflow tube is located at the center of the inner tube, that is, on the symmetry axis of the three-phase electrode, when the boiler is running, the current between the three-phase electrodes immersed in the inner tube tends to flow through the arc-shaped metal plate outside the overflow tube through the desalted water in the inner tube, causing an imbalance in the three-phase current. After the boiler has been running for a long time, the temperature of the outer arc plate and the surrounding area will continue to rise due to electrical conductivity. In severe cases, the overflow tube will be partially burned, resulting in the shutdown of the boiler. How to solve this problem has become an urgent problem that needs to be solved on site. Summary of the invention
[0004] The utility model provides a semi-submerged electrode hot water boiler capable of stable operation, which solves the technical problems of three-phase imbalance caused by a metal arc plate outside an overflow tube and local burning of the overflow tube easily caused by conductive current in water.
[0005] The utility model solves the above technical problems through the following technical solutions:
[0006] A semi-submerged electrode hot water boiler capable of stable operation comprises a boiler outer cylinder, a boiler inner cylinder is arranged in the middle and upper part of the boiler outer cylinder, an overflow cylinder is provided at the center of the cylinder bottom surface of the boiler inner cylinder, an inner cylinder water inlet pipe orifice is arranged on the cylinder bottom surface of the boiler inner cylinder outside the overflow cylinder is provided, a water supply pipe orifice and a hot water output pipe orifice are arranged on the bottom end surface of the boiler outer cylinder, respectively, an in-furnace water inlet pipe is arranged between the water supply pipe orifice and the inner cylinder water inlet pipe orifice, desalted water enters the boiler inner cylinder through the water supply pipe orifice and the in-furnace water inlet pipe in turn to form in-furnace water, an insulating overflow cylinder is movably arranged in the overflow cylinder is provided through the through hole, a lifting drive screw mechanism is arranged at the top end of the boiler outer cylinder directly above the insulating overflow cylinder, and the lower end of the suspension rod in the lifting drive screw mechanism is extended into the furnace and then suspended on an insulated Directly above the insulated overflow cylinder; three insulating seats are respectively arranged at the top end of the boiler outer cylinder, and a conductive rod is arranged in each insulating seat. The lower end of the conductive rod is extended into the furnace and connected with the electrode rod, and the lower part of the electrode rod is immersed in the inner cylinder water; an annular groove is arranged on the inner side wall of the upper port of the insulating overflow cylinder, and a four-petal butterfly-shaped horizontal frame is embedded in the annular groove. A central metal column is fixedly arranged at the center of the top surface of the four-petal butterfly-shaped horizontal frame, and a longitudinal insulating node is connected to the upper end of the central metal column, and the upper end of the longitudinal insulating node is connected to the lower end of the suspension rod; the heated inner cylinder water first enters the upper port of the insulating overflow cylinder, and after falling through the inner cavity of the four-petal butterfly-shaped horizontal frame and the insulating overflow cylinder, outer cylinder hot water is formed at the lower end of the inner part of the boiler outer cylinder, and the outer cylinder hot water is output to the outside of the furnace body through the hot water output pipe.
[0007] The bracket in the lifting and lowering driving screw mechanism is arranged on the outside of the top end of the boiler outer tube, a screw is arranged in the bracket, a screw driving motor is arranged at the top end of the bracket, the output shaft of the screw driving motor is connected with the upper end of the screw, a screw nut is arranged on the screw, a connecting plate is arranged on the screw nut, and a suspension rod is suspended on the connecting plate.
[0008] A constant pressure nitrogen inlet is arranged at the top of the boiler outer tube; a sector-shaped electrode disk is connected to the lower end of the conductive rod, and the electrode rod is suspended on the lower bottom surface of the sector-shaped electrode disk. The three sector-shaped electrode disks in the boiler inner tube are arranged at equal intervals of arc on the same circumference, and the central axis of the circle coincides with the central axis of the insulating overflow tube.
[0009] The utility model ensures the safety of the operation of the inner cylinder of the boiler and has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model;
[0011] Figure 2 yes Figure 1 AA section view in the figure;
[0012] Figure 3 It is a structural schematic diagram of the insulating overflow tube 18 of the utility model;
[0013] Figure 4 It is a structural schematic diagram of the four-petal butterfly-shaped horizontal frame 17 of the utility model;
[0014] Figure 5 It is a structural schematic diagram of the lifting drive screw mechanism of the utility model. Implementation
[0015] The utility model is described in detail below with reference to the accompanying drawings:
[0016] A semi-submerged electrode hot water boiler capable of stable operation comprises a boiler outer tube 1, a boiler inner tube 2 is arranged in the middle and upper part of the boiler outer tube 1, the boiler inner tube 2 is arranged in the boiler outer tube 1 in an insulated manner, an overflow tube lifting and passing through a through hole 25 is arranged at the center of the tube bottom surface of the boiler inner tube 2, an inner tube water inlet pipe orifice 24 is arranged on the tube bottom surface of the boiler inner tube 2 outside the overflow tube lifting and passing through the through hole 25, a water supply pipe orifice 3 and a hot water output pipe orifice 22 are respectively arranged on the bottom end surface of the boiler outer tube 1, an in-furnace water inlet pipe 4 is arranged between the water supply pipe orifice 3 and the inner tube water inlet pipe orifice 24, and desalted water enters the boiler inner tube through the water supply pipe orifice 3 and the in-furnace water inlet pipe 4 in turn. 2, an inner cylinder water 5 is formed, and an insulating overflow cylinder 18 is movably arranged in the overflow cylinder when it is lifted and lowered and passes through the through hole 25. The insulating overflow cylinder 18 is a water-conducting cylinder, and its cylinder top surface is arranged at the water top surface of the inner cylinder water 5 in the boiler inner cylinder 2. When the insulating overflow cylinder 18 rises vertically, the water top surface of the inner cylinder water 5 in the boiler inner cylinder 2 also rises accordingly. When the insulating overflow cylinder 18 descends, more inner cylinder water 5 in the boiler inner cylinder 2 will be introduced into the lower part of the boiler outer cylinder 1 through the insulating overflow cylinder 18, so that the water top surface of the inner cylinder water 5 in the boiler inner cylinder 2 also descends accordingly; a lifting and lowering driving screw mechanism is arranged at the top of the boiler outer cylinder 1 just above the insulating overflow cylinder 18, and the lifting and lowering driving screw mechanism is arranged. After the lower end of the suspension rod 15 in the lever mechanism is extended into the furnace, it is suspended above the insulating overflow tube 18; three insulating seats 9 are respectively arranged at the top of the boiler outer tube 1, and a conductive rod 8 is arranged in each insulating seat 9. After the lower end of the conductive rod 8 is extended into the furnace, it is connected with the electrode rod 6. The lower part of the electrode rod 6 is immersed in the inner tube water 5. The three electrode rods 6 are respectively connected to the three-phase AC power, and the electrode rods of each phase are mutually connected through the inner tube water 5; an annular groove 19 is arranged on the inner side wall of the upper port of the insulating overflow tube 18, and a four-petal butterfly-shaped horizontal frame 17 is embedded in the annular groove 19. A central metal Column 20, a longitudinal insulating joint 16 is connected to the upper end of the central metal column 20, and the upper end of the longitudinal insulating joint 16 is connected to the lower end of the suspension rod 15; the heated inner tube water 5 first enters the upper port of the insulating overflow tube 18, and after falling through the inner cavity of the four-petal butterfly horizontal frame 17 and the insulating overflow tube 18, the outer tube hot water 21 is formed at the lower end of the boiler outer tube 1, and the outer tube hot water 21 is output to the outside of the furnace body through the hot water output pipe 22; because the outer facade of the insulating overflow tube 18 of the technical solution is not provided with a metal arc sheet for fixing the lifting bracket, it will not cause changes to the current in the water, thereby avoiding the burning phenomenon caused by the imbalance of the three phases of the boiler and the increase in the temperature of the overflow tube wall.
[0017] The bracket 10 in the lifting and lowering driving screw mechanism is arranged on the outside of the top end of the boiler outer tube 1, a screw 12 is arranged in the bracket 10, a screw driving motor 11 is arranged at the top end of the bracket 10, the output shaft of the screw driving motor 11 is connected with the upper end of the screw 12, a screw nut 13 is arranged on the screw 12, a connecting plate 14 is arranged on the screw nut 13, a suspension rod 15 is suspended on the connecting plate 14, and a pair of screw support bearings are arranged in the bracket 10. The screw 12 rotates forward or reversely in situ under the drive of the screw driving motor 11, so that the screw nut 13 thereon rises or falls, and the screw nut 13 drives the suspension rod 15 to rise and fall through the connecting plate 14, so that the surface area of the electrode rod 6 immersed in the inner tube water 5 changes, thereby realizing the change of the boiler thermal power.
[0018] A constant-pressure nitrogen inlet pipe port 23 is provided at the top of the boiler outer tube 1, and pressurized insulating nitrogen is injected into the boiler through the constant-pressure nitrogen inlet pipe port 23; a fan-shaped electrode disk 7 is connected to the lower end of the conductive rod 8, and the electrode rod 6 is suspended on the lower bottom surface of the fan-shaped electrode disk 7. The three fan-shaped electrode disks 7 in the boiler inner tube 2 are arranged at equal intervals on the same circumference, and the central axis of the circumference coincides with the central axis of the insulating overflow tube 18.
[0019] When the boiler of the utility model is in operation, the water in the boiler is in a state of dynamic equilibrium with continuous circulation. The cold water entering the boiler from the water supply pipe port 3 enters the boiler inner tube 2 through the water inlet pipe 4 in the furnace. The inner tube water 5 in the boiler inner tube 2 is electrically heated by the three electrode rods 6 and moves upward, and enters the insulating overflow tube 18 from the top port of the insulating overflow tube 18. The hot water in the insulating overflow tube 18 falls to the lower end of the boiler outer tube 1 to form outer tube hot water 21, and is finally output to the outside of the furnace body through the hot water output pipe port 22. The temperature of the heated water in the boiler is achieved by adjusting the surface area of the three electrodes immersed in the inner tube water 5, and the water level of the inner tube water 5 is achieved by raising and lowering the insulating overflow tube 18.
Claims
1. A semi-submerged electrode hot water boiler capable of stable operation, comprising a boiler outer cylinder (1), a boiler inner cylinder (2) being arranged in the middle and upper part of the boiler outer cylinder (1), an overflow cylinder lifting and passing through hole (25) being arranged at the center of the cylinder bottom surface of the boiler inner cylinder (2), an inner cylinder water inlet pipe opening (24) being arranged on the cylinder bottom surface of the boiler inner cylinder (2) outside the overflow cylinder lifting and passing through the through hole (25), a water supply pipe opening (3) and a hot water output pipe opening (22) being arranged on the bottom end surface of the boiler outer cylinder (1), a furnace water inlet pipe (4) being arranged between the water supply pipe opening (3) and the inner cylinder water inlet pipe opening (24), and desalted water being sequentially introduced into the furnace through the water supply pipe opening (3) and the furnace water inlet pipe (4) After entering the boiler inner tube (2), inner tube water (5) is formed; an insulating overflow tube (18) is movably arranged in the overflow tube when it is lifted and passed through the through hole (25); a lifting drive screw mechanism is arranged at the top of the boiler outer tube (1) just above the insulating overflow tube (18); after the lower end of the suspension rod (15) in the lifting drive screw mechanism extends into the furnace, it is suspended just above the insulating overflow tube (18); three insulating seats (9) are arranged at the top of the boiler outer tube (1), and a conductive rod (8) is arranged in each insulating seat (9); after the lower end of the conductive rod (8) extends into the furnace, it is connected to the electrode rod (6), and the lower part of the electrode rod (6) is immersed in the inner tube water (5); it is characterized in that An annular groove (19) is provided on the inner side wall of the upper end of the insulating overflow tube (18), a four-petal butterfly-shaped horizontal frame (17) is embedded in the annular groove (19), a central metal column (20) is fixedly provided at the center of the top end surface of the four-petal butterfly-shaped horizontal frame (17), a longitudinal insulating joint (16) is connected to the upper end of the central metal column (20), and the upper end of the longitudinal insulating joint (16) is connected to the lower end of the suspension rod (15); the heated inner tube water (5) first enters the upper end of the insulating overflow tube (18), passes through the inner cavity of the four-petal butterfly-shaped horizontal frame (17) and the insulating overflow tube (18), and forms outer tube hot water (21) at the lower end of the boiler outer tube (1), and the outer tube hot water (21) is output to the outside of the boiler body through the hot water output pipe (22).
2. A semi-submerged electrode hot water boiler capable of stable operation according to claim 1, characterized in that: The bracket (10) in the lifting drive screw mechanism is arranged outside the top end of the boiler outer tube (1), a screw (12) is arranged in the bracket (10), a screw drive motor (11) is arranged at the top end of the bracket (10), the output shaft of the screw drive motor (11) is connected to the upper end of the screw (12), a screw nut (13) is arranged on the screw (12), a connecting plate (14) is arranged on the screw nut (13), and a suspension rod (15) is suspended on the connecting plate (14).
3. A semi-submerged electrode hot water boiler capable of stable operation according to claim 1 or 2, characterized in that: A constant pressure nitrogen inlet pipe port (23) is provided at the top end of the boiler outer tube (1); a fan-shaped electrode disk (7) is connected to the lower end of the conductive rod (8); an electrode rod (6) is suspended on the lower bottom surface of the fan-shaped electrode disk (7); and three fan-shaped electrode disks (7) in the boiler inner tube (2) are arranged at equal intervals of arc on the same circumference, and the central axis of the circumference coincides with the central axis of the insulating overflow tube (18).