Electrode boiler with low electrode loss rate

Abstract

The present invention proposes an electrode boiler with a low electrode loss rate, comprising: a furnace body with a water inlet and a water outlet, an electrode assembly located in the furnace body, the electrode assembly comprising a cylindrical zero-position electrode and a phase electrode located inside the zero-position electrode, wherein: the water inlet comprises a main water inlet and an auxiliary water inlet; a flow channel is provided inside the phase electrode, the flow channel has a water inlet end and a water outlet end, and the water inlet end of the flow channel is connected to a water inlet pipeline, and its water outlet end is connected to the auxiliary water inlet through the water outlet pipeline. The present invention can keep the phase electrode running at a low temperature, so that it has a longer life.

Description

Technical Field

[0001] The invention relates to the technical field of electrode boilers, and in particular to an electrode boiler with a low electrode loss rate. Background Art

[0002] Electrode boilers generally use desalted water from power plants. The conductivity of desalted water (25°C) is generally <0.3μs / cm, and the water is non-conductive. Therefore, a certain amount of electrolyte must be added to the boiler to make the boiler water have a certain resistance so that it can be conductive. Electrode boilers use the conductive properties of water containing electrolytes, which is heated to produce hot water after power is turned on. Since the electrical resistance of water is used directly for heating, 100% of the electrical energy is converted into heat, there is basically no heat loss, and compared with traditional electric heating boilers, there are fewer wearing parts such as heating tubes. Therefore, the electrode has become one of the important and expensive consumable parts in the electrode boiler, and its service life directly affects the production output and production cost of the entire electrode boiler. Summary of the invention

[0003] In order to solve the technical problems existing in the background technology, the present invention proposes an electrode boiler with a low electrode loss rate.

[0004] The present invention provides an electrode boiler with a low electrode loss rate, comprising: a furnace body with a water inlet and a water outlet, and an electrode assembly located in the furnace body, wherein the electrode assembly comprises a cylindrical zero-position electrode and a phase electrode located inside the zero-position electrode, wherein:

[0005] The water inlet includes a main water inlet and a secondary water inlet;

[0006] A flow channel is provided inside the phase electrode. The flow channel has a water inlet end and a water outlet end. The water inlet end of the flow channel is connected to a water inlet pipeline, and the water outlet end is connected to the auxiliary water inlet through the water outlet pipeline.

[0007] Preferably, a water inlet flange is provided at the bottom of the furnace body, and the water inlet flange includes a main pipe body and a secondary pipe body; one end of the main pipe body is the main water inlet, and the other end is the secondary water inlet; the secondary pipe body is located on one side of the main pipe body, and one end of the secondary pipe body is connected to the main pipe body, and the other end of the secondary pipe body is fixed and connected to the furnace body.

[0008] Preferably, a mixing chamber is provided at the intersection of the axis lines of the main tube and the auxiliary tube.

[0009] Preferably, a secondary flow channel is provided inside the zero-position electrode, and the secondary flow channel has a water inlet end and a water outlet end; the water inlet pipeline includes a main water inlet path and a water inlet branch path, the main water inlet path is connected to the water inlet end of the flow channel, and the water inlet branch path connects the main water inlet path and the water inlet end of the secondary flow channel; the water outlet pipeline includes a main water outlet path and a water outlet branch path, the main water outlet path connects the water outlet end of the flow channel and the secondary water inlet, and the water outlet branch path connects the water outlet end of the secondary flow channel and the main water outlet path.

[0010] Preferably, the phase electrode has an abdominal cavity inside, a vertically fixed power connection pole is provided at the top of the phase electrode, an axially arranged tubular cavity connected to the abdominal cavity is provided inside the power connection pole, a coaxially arranged inner tube body is provided in the tubular cavity, a spacing is reserved between the inner tube body and the tubular cavity to form an annular cavity, the lower end of the inner tube body extends into the abdominal cavity, and the inner tube body is connected with the cavity through the abdominal cavity to form a flow channel; the top of the inner tube body is penetrated to form a water inlet end of the flow channel, and the side wall of the annular cavity has an opening to form a water outlet end of the flow channel.

[0011] Preferably, the inner tube body is made of conductive material and is integrally formed with the power connection pole.

[0012] Preferably, it also includes an insulating sleeve and a driving mechanism, the insulating sleeve is coaxially arranged on the inner side of the zero-position electrode, the insulating sleeve is connected to the driving mechanism and can move up and down under the drive of the driving mechanism; the phase electrode is located on the inner side of the insulating sleeve.

[0013] Preferably, an upper insulating support coaxial with and fixed to the phase electrode is provided at the top, and a lower insulating support coaxial with and fixed to the phase electrode is provided at the bottom, and the peripheral walls of the upper insulating support and the lower insulating support are located in the same annular plane as the peripheral wall of the phase electrode; a sealing assembly is provided between the insulating sleeve and the phase electrode, and the sealing assembly includes an upper sealing portion located on the inner side of the upper port of the insulating sleeve and a lower sealing portion located on the inner side of the lower port of the insulating sleeve.

[0014] In the present invention, the water inlet is set to have a main water inlet and a secondary water inlet. At the same time, a flow channel is provided in the phase electrode, and the water inlet end of the flow channel is connected to a water inlet pipeline, and the water outlet end is connected to the secondary water inlet through the water outlet pipeline. During operation, the main water inlet and the water inlet pipeline of the water inlet are respectively used to access desalted water, so that the desalted water entering the main water inlet of the water inlet can be used to quickly replenish the hot water flowing out of the furnace body, and the desalted water entering the water inlet pipeline is used to generate heat exchange with the phase electrode, thereby achieving the purpose of cooling the phase electrode and preheating the desalted water. The preheated desalted water is then allowed to re-enter the furnace body through the secondary water inlet. The method of cooling the phase electrode to make it run at a low temperature can not only extend the service life of the phase electrode, but also avoid scaling on its surface, so that it can operate with high efficiency for a long time. At the same time, the preheated desalted water entering the furnace body can effectively save heating time and reduce energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an electrode boiler with a low electrode loss rate proposed by the present invention.

[0016] Figure 2 The present invention provides a schematic structural diagram of an electrode assembly in an electrode boiler with a low electrode loss rate.

[0017] Figure 3 for Figure 2 Enlarged view of point I in the middle.

[0018] Figure 4 This is a schematic diagram of the internal structure of the electrode assembly in an electrode boiler with a low electrode loss rate proposed by the present invention.

[0019] Figure 5 The present invention provides an axial view of the electrode assembly in an electrode boiler with a low electrode loss rate. DETAILED DESCRIPTION

[0020] Reference Figure 1-5 The present invention provides an electrode boiler with a low electrode loss rate, comprising: a furnace body 1 with a water inlet and a water outlet, an electrode assembly located in the furnace body 1, the electrode assembly comprising a cylindrical zero-position electrode 2 and a phase electrode 3 located inside the zero-position electrode 2, wherein:

[0021] The water inlet includes a main water inlet and an auxiliary water inlet; a flow channel is provided inside the phase electrode 3, and the flow channel has an inlet end and an outlet end, and the inlet end of the flow channel is connected to an inlet pipe 4, and its outlet end is connected to the auxiliary water inlet through an outlet pipe 5. Since the electrode boiler does not rely on the heat exchange between the electrode and the boiler water to heat the boiler water, but uses the conductive properties of electrolyte water to make the boiler water energized as a resistor to generate hot water (that is, the electrical resistance of water is used for direct heating). Therefore, during operation, desalted water is transported into the flow channel through the inlet pipe 4, so that it exchanges heat with the phase electrode 3 in advance, so that the temperature of the phase electrode 3 itself is always kept at a low state, and the preheated desalted water is then transported back to the furnace body 1 through the outlet pipe 5 for heating.

[0022] As can be seen from the above, the present invention is achieved by setting the water inlet to a structure with a main water inlet and a secondary water inlet. At the same time, a flow channel is provided in the phase electrode 3, and the water inlet end of the flow channel is connected to the water inlet pipeline 4, and the water outlet end is connected to the secondary water inlet through the water outlet pipeline 5. During operation, the main water inlet of the water inlet and the water inlet pipeline 4 are respectively used to access desalted water, so that the desalted water entering the main water inlet of the water inlet can be used to quickly replenish the hot water flowing out of the furnace body 1, and the desalted water entering the water inlet pipeline 4 is used to generate heat exchange with the phase electrode 3, so as to achieve the purpose of cooling the phase electrode 3 and preheating the desalted water. And the preheated desalted water is allowed to re-enter the furnace body 1 through the secondary water inlet. By cooling the phase electrode 3 and making it run at a low temperature, the service life of the phase electrode 3 can be extended, and scaling on its surface can be avoided, so that it can operate with high efficiency for a long time. At the same time, the preheated desalted water entering the furnace body 1 can effectively save heating time and reduce energy consumption.

[0023] In addition, in this embodiment, a water inlet flange is provided at the bottom of the furnace body 1, and the water inlet flange includes a main pipe body 6 and a secondary pipe body 7; one end of the main pipe body 6 is a main water inlet, and the other end thereof is a secondary water inlet; the secondary pipe body 7 is located on one side of the main pipe body 6, and one end thereof is connected to the main pipe body 6, and the other end thereof is fixed and connected to the furnace body 1. After the desalted water enters the main pipe body 6 from the main water inlet, it intersects with the hot water discharged from the phase electrode 3, and finally enters the furnace body 1 from the secondary pipe body 7. The arrangement of this structure allows the newly entered desalted water to mix with the preheated desalted water in the process of entering the furnace body 1, so as to make the heating in the furnace as uniform as possible.

[0024] Specifically, a mixing chamber is provided at the intersection of the axis lines of the main pipe body 6 and the auxiliary pipe body 7, so that the hot water entering from the auxiliary water inlet and the cold water entering from the main water inlet are mixed in the mixing chamber and then enter the furnace body 1 through the auxiliary pipe body 7.

[0025] In this embodiment, a secondary flow channel is provided inside the zero-position electrode 2, and the secondary flow channel has a water inlet end and a water outlet end; the water inlet pipeline 4 includes a water inlet main path 41 and a water inlet branch 42, the water inlet main path 41 is connected to the water inlet end of the flow channel, and the water inlet branch 42 connects the water inlet main path 41 and the water inlet end of the secondary flow channel; the water outlet pipeline 5 includes a water outlet main path 51 and a water outlet branch 52, the water outlet main path 51 connects the water outlet end of the flow channel and the secondary water inlet, and the water outlet branch 52 connects the water outlet end of the secondary flow channel and the water outlet main path 51. The desalted water entering the zero-position electrode 2 is heat exchanged with the zero-position electrode 2 to keep the zero-position electrode 2 running at a low temperature, and the hot water generated after the heat exchange is transported back to the furnace body 1 by the water outlet pipeline 5.

[0026] In this embodiment, the phase electrode 3 has an abdominal cavity inside, and a vertically fixed power connection rod 31 is provided on the top of the phase electrode 3. An axially arranged tubular cavity connected to the abdominal cavity is provided inside the power connection rod 31. A coaxially arranged inner tube body 311 is provided in the tubular cavity. A spacing is reserved between the inner tube body 311 and the tubular cavity to form an annular cavity. The lower end of the inner tube body 311 extends into the abdominal cavity, and the inner tube body 311 is connected with the cavity through the abdominal cavity to form a flow channel; the top of the inner tube body 311 is penetrated to form a water inlet end of the flow channel, and the side wall of the annular cavity has an opening to form a water outlet end of the flow channel.

[0027] Specifically: the inner tube body 311 is made of conductive material and is integrally formed with the power connection pole 31 .

[0028] In this embodiment, an insulating sleeve 8 and a driving mechanism 9 are also included. The insulating sleeve 8 is coaxially arranged on the inner side of the zero-position electrode 2. The insulating sleeve 8 is connected to the driving mechanism 9 and can move up and down under the drive of the driving mechanism 9. The phase electrode 3 is located on the inner side of the insulating sleeve 8. The driving mechanism 9 drives the insulating sleeve 8 to rise and fall to adjust the contact area between the phase electrode 3 and the zero-position electrode 2, thereby achieving the purpose of adjusting the power.

[0029] In this embodiment, the top of the phase electrode 3 is provided with an upper insulating support 10 which is coaxial and fixed thereto, and the bottom thereof is provided with a lower insulating support 11 which is coaxial and fixed thereto, and the peripheral walls of the upper insulating support 10 and the lower insulating support 11 are located in the same annular surface as the peripheral wall of the phase electrode 3. A sealing assembly is provided between the insulating sleeve 8 and the phase electrode 3, and the sealing assembly includes an upper sealing portion 12 located on the inner side of the upper end of the insulating sleeve 8 and a lower sealing portion 13 located on the inner side of the lower end of the insulating sleeve 8. The upper sealing portion 12 and the lower sealing portion 13 can prevent the water in the furnace from entering the furnace from the upper end and the lower end of the insulating sleeve 8, thereby preventing the water from being retained between the insulating sleeve 8 and the phase electrode 3 and affecting its heating. In addition, during the up and down movement of the insulating sleeve 8, the upper sealing portion 12 and the lower sealing portion 13 are used to block the water in the furnace from entering the insulating sleeve 8. At the same time, during the lifting process of the insulating sleeve 8, the upper sealing portion 12 and the lower sealing portion 13 can also wipe the surface of the phase electrode 3.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrode boiler with low electrode loss rate, characterized in that: include: A furnace body (1) having a water inlet and a water outlet, and an electrode assembly located in the furnace body (1), the electrode assembly comprising a cylindrical zero-position electrode (2) and a phase electrode (3) located inside the zero-position electrode (2), wherein: The water inlet includes a main water inlet and a secondary water inlet; A flow channel is provided inside the phase electrode (3), the flow channel having a water inlet end and a water outlet end, the water inlet end of the flow channel is connected to a water inlet pipeline (4), and the water outlet end of the flow channel is connected to the auxiliary water inlet via a water outlet pipeline (5); A water inlet flange is provided at the bottom of the furnace body (1), and the water inlet flange comprises a main pipe body (6) and a secondary pipe body (7); one end of the main pipe body (6) is a main water inlet, and the other end thereof is a secondary water inlet; the secondary pipe body (7) is located on one side of the main pipe body (6), and one end thereof is in conduction with the main pipe body (6), and the other end thereof is fixed to and in conduction with the furnace body (1); A mixing chamber is provided at the intersection of the axis lines of the main tube (6) and the auxiliary tube (7); A secondary flow channel is provided inside the zero-position electrode (2), and the secondary flow channel has a water inlet end and a water outlet end; the water inlet pipeline (4) comprises a water inlet main path (41) and a water inlet branch path (42), the water inlet main path (41) is connected to the water inlet end of the flow channel, and the water inlet branch path (42) connects the water inlet main path (41) and the water inlet end of the secondary flow channel; the water outlet pipeline (5) comprises a water outlet main path (51) and a water outlet branch path (52), the water outlet main path (51) connects the water outlet end of the flow channel and the secondary water inlet, and the water outlet branch path (52) connects the water outlet end of the secondary flow channel and the water outlet main path (51).

2. The electrode boiler with low electrode loss rate according to claim 1, characterized in that: The phase electrode (3) has an abdominal cavity inside, a vertically fixed power connection rod (31) is provided at the top of the phase electrode (3), an axially arranged tube cavity in communication with the abdominal cavity is provided inside the power connection rod (31), a coaxially arranged inner tube body (311) is provided inside the tube cavity, a spacing is reserved between the inner tube body (311) and the tube cavity to form an annular cavity, the lower end of the inner tube body (311) extends into the abdominal cavity, and the inner tube body (311) is in communication with the annular cavity through the abdominal cavity to form a flow channel; the top of the inner tube body (311) is penetrated to form a water inlet end of the flow channel, and the side wall of the annular cavity has an opening to form a water outlet end of the flow channel.

3. The electrode boiler with low electrode loss rate according to claim 2, characterized in that: The inner tube body (311) is made of a conductive material and is integrally formed with the power connection pole (31).

4. The electrode boiler with low electrode loss rate according to any one of claims 1 to 3, characterized in that: It also includes an insulating sleeve (8) and a driving mechanism (9), wherein the insulating sleeve (8) is coaxially arranged on the inner side of the zero-position electrode (2), the insulating sleeve (8) is connected to the driving mechanism (9) and can move up and down under the drive of the driving mechanism (9); and the phase electrode (3) is located on the inner side of the insulating sleeve (8).

5. The electrode boiler with low electrode loss rate according to claim 4, characterized in that: An upper insulating support (10) coaxially fixed to the phase electrode (3) is provided at the top, and a lower insulating support (11) coaxially fixed to the phase electrode (3) is provided at the bottom, and the peripheral walls of the upper insulating support (10) and the lower insulating support (11) are located in the same annular surface as the peripheral wall of the phase electrode (3); a sealing assembly is provided between the insulating sleeve (8) and the phase electrode (3), and the sealing assembly comprises an upper sealing portion (12) located on the inner side of the upper port of the insulating sleeve (8) and a lower sealing portion (13) located on the inner side of the lower port of the insulating sleeve (8).

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