Non-neutral grounding fully immersed electrode hot water boiler electrode mounting structure

Abstract

The application discloses a non-neutral grounding full-submerged electrode hot water boiler electrode mounting structure and an electrode boiler. The electrode boiler comprises a shell and an electrode rod. The top of the shell is dome-shaped. The electrode rod is mounted on the shell. An electrode mounting connecting pipe seat is arranged on the shell and located outside the shell. An electrode mounting plate is arranged on the electrode rod. An electrode assembly flange is arranged on the electrode mounting connecting pipe seat. The electrode mounting plate and the electrode assembly flange are assembled together through a bolt connecting piece. First and second insulating pieces are sleeved on the bolt connecting piece. The first insulating piece is located between the electrode mounting plate and the electrode assembly flange. The two sides of the electrode mounting plate are respectively provided with the first and second insulating pieces. An exhaust pipe is connected to the top of the shell and the electrode mounting plate. The exhaust pipe is used for exhausting gas in the top of the shell and the electrode mounting connecting pipe seat, so that the top of the shell and the electrode mounting connecting pipe seat are always in a full-water state. The application also discloses an electrode boiler using the above mounting structure.

Description

Technical Field

[0001] This invention relates to the field of boiler equipment, and more particularly to an electrode mounting structure for a non-neutral grounded fully submerged electrode hot water boiler. Background Technology

[0002] Fully submerged electrode hot water boilers are a commonly used type of equipment. Currently, the top structure of the shell of most fully submerged electrode hot water boilers is a dome-shaped structure (because a boiler is a pressure vessel, a dome structure is generally used to ensure good pressure-bearing performance). The specific shape of this structure can be seen in patent publications CN208735608U or CN205909499U. This type of dome-shaped fully submerged electrode hot water boiler has some problems during use: One problem is that air exists in the top of the sealed container and in the electrode mounting pipe seat, preventing the water level from reaching full level. If the top of the dome-shaped electrode boiler shell is not equipped with an exhaust mechanism, the electrode boiler will inevitably produce internal air pollution during operation. The generation of a certain amount of air and hydrogen gas, with the hydrogen gas accumulating in the top of the shell and inside the electrode mounting connector for a long period, can lead to two dangers: Danger 1 is that the electrode rods exposed to the air inside the connector will experience a rise in surface temperature during the heating process due to the lack of heat dissipation from the water, which can cause thermal breakdown of the electrode insulation and damage the electrodes; Danger 2 is that if these gases are not vented in time during the use of a fully submerged electrode hot water boiler, the accumulation of a certain concentration can lead to a hydrogen explosion hazard caused by static electricity; Problem 2 is that if there are no first and second insulating components between the electrode mounting plate and the electrode mounting connector to insulate and isolate it from the boiler shell, the safety distance between the high-voltage electrodes and the boiler shell will be insufficient, which can cause the entire boiler shell to become electrified. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes an electrode installation structure for a non-neutral grounded, fully submerged electrode hot water boiler.

[0004] The technical solution adopted in this invention is as follows:

[0005] An electrode mounting structure for a non-neutral grounded fully submerged electrode hot water boiler includes a shell and electrode rods. The top of the shell is dome-shaped. The electrode rods are mounted on the shell. An electrode mounting connector is provided on the shell and is located outside the shell. An electrode mounting plate is provided on the electrode rod. An electrode assembly flange is provided on the electrode mounting connector. The electrode mounting plate and the electrode assembly flange are assembled together by bolts. A first insulating element and a second insulating element are sleeved on the bolts. The first insulating element is located between the electrode mounting plate and the electrode assembly flange. The first insulating element and the second insulating element are located on opposite sides of the electrode mounting plate. An exhaust pipe is connected to the top of the shell and to the electrode mounting plate. The exhaust pipes are used to discharge gas from the top of the shell and the electrode mounting connector, ensuring that the top of the shell and the electrode mounting connector are always full of water (i.e., filled with boiler water).

[0006] In this mounting structure, the electrode rod is mounted on the electrode mounting connector seat via its own electrode mounting plate. An exhaust pipe is installed at the top of the housing, and another exhaust pipe is installed on the electrode mounting plate. Gas inside the electrode mounting connector seat and at the top of the housing can be discharged through the exhaust pipes, ensuring that the top of the housing and the electrode mounting connector seat are always filled with boiler water. This prevents gas accumulation at the top of the housing and inside the electrode mounting connector seat. Simultaneously, the portion of the electrode rod located inside the housing (and electrode mounting connector seat) is always submerged in boiler water. The boiler water cools the electrode rod, preventing it from overheating and thermal breakdown, thus extending its service life. Furthermore, the presence of the first and second insulating components provides insulation between the electrode mounting connector seat (including the housing) and the electrode rod, preventing the electrode rod from conducting electricity to the electrode mounting connector seat (and housing). This avoids the possibility of the housing becoming electrified due to the electrode rod conducting electricity to the housing.

[0007] In summary, this installation structure, by installing exhaust pipes at the top of the shell and the electrode mounting connector, allows the gas inside the top of the shell and the electrode mounting connector to be discharged, ensuring that the top of the shell and the electrode mounting connector are always filled with boiler water, thus preventing hydrogen explosion.

[0008] In this installation structure, the shell, electrode mounting pipe seat, electrode assembly flange, and electrode mounting plate are all made of metal materials.

[0009] Optionally, the first insulating element is a ceramic insulating pad, and the first insulating element is annular.

[0010] Specifically, when supplying power to the electrode boiler using a 10kV voltage, the thickness of the ceramic insulating pad is 12.5cm. This distance ensures the necessary high-voltage safety distance between the electrode and the electrode mounting connector.

[0011] Optionally, the second insulating element is a ceramic sleeve for the electrode opening, and the second insulating element is cylindrical in shape.

[0012] Optionally, the bolted connector is a double-ended bolt assembly.

[0013] Optionally, the electrode mounting plate and the electrode assembly flange are in a parallel state.

[0014] Optionally, a venting valve may be directly or indirectly installed on the exhaust pipe.

[0015] Optionally, an insulating tube is connected to the exhaust pipe, and the insulating tube is connected to the parallel pipe assembly.

[0016] Optionally, the electrode mounting connector is a circular electrode mounting connector, and the electrode rod does not contact the electrode mounting connector.

[0017] An electrode boiler includes the electrode mounting structure for a non-neutral grounded fully submerged electrode hot water boiler as described above.

[0018] It should be noted that this type of electrode boiler is used to produce hot water, not steam.

[0019] The beneficial effects of the present invention are: by installing exhaust pipes at the top of the shell and at the electrode mounting pipe seat, the gas in the top of the shell and the electrode mounting pipe seat is discharged through the exhaust pipes, so that the top of the shell and the electrode mounting pipe seat are always filled with furnace water, thus avoiding hydrogen explosion and electrode thermal breakdown. Attached image description:

[0020] Figure 1 This is a simplified schematic diagram of the electrode installation structure for a non-neutral grounded, fully submerged electrode hot water boiler.

[0021] Figure 2 yes Figure 1 A simplified enlarged diagram of point A in the middle;

[0022] Figure 3 This is a schematic diagram showing the distribution of the exhaust pipe on the casing.

[0023] The figures are labeled as follows: 1. Shell; 2. Electrode rod; 3. Electrode mounting pipe seat; 41. First exhaust pipe; 401. First insulating pipe; 42. Second exhaust pipe; 402. Second insulating pipe; 5. Vent valve; 6. Electrode assembly flange; 7. First insulating component; 8. Electrode mounting plate; 9. Second insulating component; 10. Double-ended bolt assembly; 11. Parallel pipe assembly; 12. Hoses. Detailed implementation method:

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] Example 1

[0026] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, an electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler includes a shell 1 and an electrode rod 2. The top of the shell 1 is dome-shaped. The electrode rod 2 is installed on the shell 1. An electrode mounting connector 3 is provided on the shell 1 (the electrode mounting connector 3 is welded to the outer surface of the shell 1) and is located outside the shell 1. An electrode mounting plate 8 is provided on the electrode rod 2. An electrode assembly flange 6 is provided on the electrode mounting connector 3. The electrode mounting plate 8 and the electrode assembly flange 6 are assembled together by bolts. A first insulating element 7 and a second insulating element 9 are sleeved on the bolts. The first insulating element 7 is located between the electrode mounting plate 8 and the electrode assembly flange 6. The first insulating element 7 and the second insulating element 9 are located on both sides of the electrode mounting plate 8. A second exhaust pipe 42 is connected to the top of the shell 1, and a first exhaust pipe 41 is connected to the electrode mounting plate 8. The second exhaust pipe 42 and the first exhaust pipe 41 are used to discharge the gas inside the top of the shell 1 and the electrode mounting connector 3, so that the top of the shell 1 and the electrode mounting connector 3 are always in a state of full water (i.e., full of boiler water).

[0027] In this installation structure, the electrode rod 2 is mounted on the electrode mounting connector 3 via its own electrode mounting plate 8. An exhaust pipe is provided on the top of the housing 1, and an exhaust pipe is also installed on the electrode mounting plate 8. The gas inside the electrode mounting connector 3 and the gas on the top of the housing 1 can be discharged through the exhaust pipe, ensuring that the top of the housing 1 and the electrode mounting connector 3 are always filled with boiler water, preventing gas from accumulating in the top of the housing 1 and the electrode mounting connector 3. At the same time, the part of the electrode rod 2 located inside the housing 1 (and the electrode mounting connector 3) is always submerged in boiler water. The boiler water can cool the electrode rod 2, preventing the electrode rod 2 from overheating and extending the service life of the electrode rod 2. Meanwhile, the presence of the first insulating component 7 and the second insulating component 9 can provide insulation between the electrode mounting connector 3 (including the housing 1) and the electrode rod 2, preventing the electrode rod 2 from conducting electricity to the electrode mounting connector 3 (and the housing 1). This can prevent the housing 1 from becoming electrified due to the electrode rod 2 conducting electricity to the housing 1. Therefore, this structure exhausts the gas inside the shell 1 and the electrode mounting pipe seat 3, and keeps the electrode mounting pipe seat 3 and the shell 1 full of water at all times. At the same time, the first insulating member 7 and the second insulating member 9 prevent the shell 1 from becoming electrified due to the conduction of electricity from the electrode rod 2. Through the above-mentioned exhaust, full boiler water and non-electrostatic shell 1, hydrogen explosion of the electrode boiler is avoided.

[0028] It should be noted that problems with the power supply grid (such as phase loss, three-phase imbalance, etc.) may also cause the casing 1 to become energized, but the problem of the casing 1 becoming energized due to the power supply grid has been solved by the technical solution shown in CN115307304A.

[0029] In summary, in this installation structure, by installing exhaust pipes at the top of the shell 1 and at the electrode mounting connector 3, the gas inside the top of the shell 1 and the electrode mounting connector 3 is discharged through the exhaust pipes, so that the top of the shell 1 and the electrode mounting connector 3 are always filled with furnace water, thus avoiding hydrogen explosion.

[0030] In this installation structure, the housing 1, electrode mounting pipe seat 3, electrode assembly flange 6, and electrode mounting plate 8 are all made of metal materials.

[0031] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the first insulating component 7 is a ceramic insulating pad, which is annular in shape, with circular holes for threading screws distributed along the periphery of the ceramic insulating pad.

[0032] Specifically, when using a 10KV voltage to power the electrode boiler, the thickness of the ceramic insulating pad is 12.5cm.

[0033] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the second insulating component 9 is an electrode port ceramic sleeve. The electrode port ceramic sleeve is in the form of a cylindrical sleeve, and the electrode port ceramic sleeves are evenly distributed in the circumferential direction at the screw hole positions on the upper side of the electrode mounting plate.

[0034] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the bolted connector is a double-ended bolt assembly 10.

[0035] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the electrode mounting plate 8 and the electrode assembly flange 6 are in a parallel state.

[0036] For details, please refer to the attached Figure 1 and appendix Figure 3 As shown, each electrode mounting plate 8 is equipped with a first exhaust pipe 41, and each first exhaust pipe is connected to a first insulating pipe 401. One end of the first insulating pipe 401 is connected to the first exhaust pipe 41 via a flexible hose 12 (the flexible hose 12 provides a flexible connection), and the other end of the first insulating pipe 401 is connected to the parallel pipe assembly 11. A second exhaust pipe 42 is connected to the top of the housing, and a second insulating pipe 402 is connected to the second exhaust pipe 42. The second insulating pipe 402 is connected to the parallel pipe assembly 11, and a vent valve 5 is connected to the parallel pipe assembly 11. The gas in the first exhaust pipe 41 and the gas in the second exhaust pipe 42 enter the parallel pipe assembly 11 and are then discharged through the vent valve 5. Both the first and second insulating pipes are made of non-conductive material.

[0037] The presence of the first insulating tube 401 prevents short circuits between the phase electrode (i.e., the electrode rod) and the parallel tube assembly 11 from becoming energized. The presence of the second insulating tube 402 prevents the parallel tube assembly 11 from becoming energized and ensures that there is no short circuit between the housing and the phase electrode (i.e., the electrode rod).

[0038] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, the electrode mounting connector 3 is circular, and the electrode rod 2 does not contact the electrode mounting connector 3.

[0039] Example 2

[0040] An electrode boiler includes an installation structure as shown in Example 1.

[0041] The above description is merely a preferred embodiment of the present invention and does not limit the scope of patent protection of the present invention. Any equivalent modifications made based on the content of the present invention specification, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present invention.

Claims

1. An electrode mounting structure for a non-neutral grounded fully submerged electrode hot water boiler, comprising a shell and electrode rods, wherein the top of the shell is dome-shaped, and the electrode rods are mounted on the shell, characterized in that, The shell is provided with an electrode mounting connector, which is located outside the shell. The electrode rod is provided with an electrode mounting plate, and the electrode mounting connector is provided with an electrode assembly flange. The electrode mounting plate and the electrode assembly flange are assembled together by bolts. A first insulating element and a second insulating element are sleeved on the bolts. The first insulating element is located between the electrode mounting plate and the electrode assembly flange. The first insulating element and the second insulating element are located on opposite sides of the electrode mounting plate. A second exhaust pipe is connected to the top of the shell, and a first exhaust pipe is connected to the electrode mounting plate. The second exhaust pipe and the first exhaust pipe are used to discharge gas from the top of the shell and the electrode mounting connector, so that the top of the shell and the electrode mounting connector are always full of water.

2. The electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler as described in claim 1, characterized in that, The first insulating element is a ceramic insulating pad, and the first insulating element is in the shape of a ring.

3. The electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler as described in claim 1, characterized in that, The second insulating component is a ceramic sleeve for the electrode opening, and the second insulating component is cylindrical in shape.

4. The electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler as described in claim 1, characterized in that, The bolted connector is a double-ended bolt assembly.

5. The electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler as described in claim 1, characterized in that, The electrode mounting plate and the electrode assembly flange are in a parallel state.

6. The electrode installation structure for a non-neutral grounded fully submerged electrode hot water boiler as described in claim 1, characterized in that, The electrode mounting connector is circular, and the electrode rod does not contact the electrode mounting connector.

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