CN111491409A

CN111491409A - Electrode type water heating equipment

Info

Publication number: CN111491409A
Application number: CN202010377697.XA
Authority: CN
Inventors: 王真光; 杨子元; 钟克志
Original assignee: Yantai Zhuoyue New Energy Science Ltd
Current assignee: Yantai Zhuoyue New Energy Science Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-08-04

Abstract

The invention relates to electrode type water heating equipment.A middle clapboard in a tank body divides the tank body into an upper cavity and a lower cavity, and the upper cavity is connected with a vacuum pump; three insulating sleeves are fixedly arranged on the middle partition plate; the zero position electrode comprises a circular steel plate and three sinking type steel pipe sleeves which are uniformly distributed in the circumferential direction and fixed with the circular steel plate; the three steel pipe sleeves can be correspondingly arranged in the three insulating sleeves in a vertically sliding manner; a certain gap is left between the phase electrode and the steel pipe sleeve; the hydraulic cylinder for driving the zero position electrode to lift is fixedly arranged at the center of the middle partition plate, and the upper end of a piston rod of the hydraulic cylinder is fixed at the center of the circular steel plate through an insulating pad; the oil inlet and outlet pipes of the hydraulic cylinder respectively penetrate through the side walls of the upper cavity and the lower cavity and then are connected with the hydraulic pump so as to ensure that no moving part penetrates through the tank body. The device has low total cost, small volume and good load regulation stability and safety performance, ensures the load regulation rate, reduces the use amount of inorganic salt used as electrolyte and lightens the pollution.

Description

Electrode type water heating equipment

Technical Field

The invention relates to high-voltage electrode type water heating equipment, which is applicable to voltages including but not limited to 6KV, 10KV, 20KV and 35 KV.

Background

The existing electrode type water heating equipment adopts a completely immersed technical route, namely, a heating electrode is completely immersed in conductive medium water, a phase electrode and a zero-position electrode are conducted through the medium water in the middle to heat the medium water, a protection shield is arranged between the phase electrode and the zero-position electrode, the conductive area of the medium water is changed through the lifting of the protection shield, the heating power is changed, and the outlet water temperature of hot water is controlled. The protection shield works in a high-temperature environment of about 100 ℃, and simultaneously bears a high voltage of 10KV, so that the protection shield has high requirements on materials, mainly depends on import at present, and has high cost and long supply period. The protection shield needs to realize the lifting function through mechanical mechanism, and moving parts need to pass through the equipment body, has increased the hidden danger that the equipment body leaked. The whole immersed equipment body is full of medium water, more than 2 buffer tanks need to be arranged outside the body, the problem that the heating expansion pressure of the medium water rises is solved, and the overall cost of the equipment is increased. Moreover, because a protection shield needs to be arranged in a fully-immersed mode, the distance between a phase electrode and a zero-position electrode is increased more, the conductivity of the medium water needs to be more than 100 mu s/cm, the using amount of inorganic salt is increased, the water quality pollution degree is increased, and meanwhile, the risk of leakage of electricity through the medium water during faults is increased due to the fact that the conductivity of the water rises.

The other technical route is a semi-immersion type, namely, an inner container is arranged in an equipment tank body, a heating electrode is inserted into the inner container, the inner container is used as a zero-position electrode, medium water is filled between the heating electrode and the inner container, the height of the electrode immersed medium water is changed by adjusting the water level of the medium water in the inner container, the heating power is adjusted, and the outlet water temperature of hot water is controlled. The semi-immersion type is that a water pump is used for pumping medium water into the inner container, the water level is easy to fluctuate, the immersion parts of the three electrodes are inconsistent, so that three-phase load is unbalanced, and the high-voltage switch cabinet can be tripped during serious operation; meanwhile, the water level fluctuation can also cause load fluctuation, and the quality of the power grid is influenced; the water level adjustment has hysteresis, so that the power adjustment rate is influenced; fluctuating water bloom may also form an arc discharge, affecting safety performance.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an electrode type water heating device, which firstly reduces the total manufacturing cost of the device, solves the load regulation stability of the device and ensures the load regulation speed; secondly, the safety performance of the equipment is improved; thirdly, reducing the volume of the equipment; fourthly, the use amount of inorganic salt used as electrolyte is reduced, and pollution is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides an electrode type water heating equipment, includes jar body, its characterized in that: a middle clapboard in a circular plate form is fixedly arranged in the tank body, an upper cavity is arranged above the middle clapboard, and a lower cavity is arranged below the middle clapboard; the tank body is provided with a water inlet communicated with the lower cavity and a water outlet communicated with the upper cavity; the upper cavity of the tank body is connected with a vacuum pump for maintaining the upper cavity in a vacuum state; three insulating sleeves with upper and lower ends respectively communicated with the upper cavity and the lower cavity are circumferentially and uniformly distributed and fixedly arranged on the middle partition plate, and the axes of the three insulating sleeves are parallel to the axis of the middle partition plate; the heating equipment also comprises a zero-position electrode, wherein the zero-position electrode comprises a circular steel plate and three steel pipe sleeves which are uniformly distributed in the circumferential direction and fixed with the circular steel plate, the upper ends of the steel pipe sleeves are open and level with the circular steel plate, and the lower ends of the steel pipe sleeves sink and are open; the three steel pipe sleeves can be correspondingly arranged in the three insulating sleeves in a vertically sliding manner; the heating equipment also comprises three insulated electrodes of which the structures are that insulated ceramics coat metal conductive cores, the three insulated electrodes are respectively connected to the tank body, the lower ends of the insulated electrodes are respectively connected with phase electrodes corresponding to the three steel pipe sleeves, the phase electrodes can correspondingly enter the steel pipe sleeves of the zero-position electrodes, and a certain gap is reserved between the phase electrodes and the steel pipe sleeves; the heating equipment also comprises a hydraulic cylinder fixedly arranged at the central position of the middle partition plate, and the upper end of a piston rod of the hydraulic cylinder is fixed at the central position of the circular steel plate through an insulating pad; the oil inlet and outlet pipes of the hydraulic cylinder respectively penetrate through the side walls of the upper cavity and the lower cavity and then are connected with the hydraulic pump so as to ensure that no moving part penetrates through the tank body.

Preferably, the hydraulic cylinder drives the null electrode to ascend and descend so as to adjust the power of the heating device.

Preferably the phase electrode is an alloy multi-leaf sector.

Preferably, the tank body and the middle partition plate are made of carbon steel.

The invention has the positive effects that:

firstly, the power of the equipment is adjusted by adopting the liftable zero-position electrode, an import protection shield mode is replaced, the manufacturing cost of the equipment is reduced, and the supply period is ensured; and meanwhile, three-phase imbalance and load fluctuation caused by liquid level regulation are avoided.

Secondly, the upper part of the equipment body of the invention is provided with a vacuum buffer space for accommodating the expansion amount of the rise of the temperature of the medium water, so that 2 buffer tanks arranged outside can be eliminated, and the occupied area and the manufacturing cost of the equipment are further reduced. In addition, the upper cavity is kept in a vacuum state, and the change of the water conductivity caused by air can be effectively prevented.

And thirdly, the zero position electrode is insulated from the shell of the body by adopting the insulating guide sleeve, and is in a suspension state, so that the safety of equipment is improved.

Fourthly, the hydraulic cylinder zero position electrode lifting device is adopted, the moving device is prevented from penetrating through the equipment body, the hidden danger of leakage is avoided, and the reliability of the equipment is improved.

Fifth, after the invention cancels the protection shield, the distance between the phase electrode and the zero electrode can be reduced greatly, the conductivity of the medium water can be below 50 mus/cm, thus softened water and purified water can be adopted to prepare the medium water, inorganic salt is avoided to prepare the medium water, and the environmental pollution is effectively reduced. In addition, the dielectric water with the conductivity of less than 50 mu s/cm is adopted, so that the risk of electric shock caused by leakage of the dielectric water during fault is reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention.

Fig. 2 is a schematic layout (top view) for showing the relative positions of the hydraulic cylinder, the null electrode and the insulating sleeve.

Detailed Description

The invention is further illustrated below with reference to examples and figures.

Referring to fig. 1 and 2, the embodiment of the present invention includes a tank body 1, a middle partition plate 8 in a circular plate form is fixedly installed inside the tank body 1, an upper cavity is arranged above the middle partition plate 8, and a lower cavity is arranged below the middle partition plate. The tank body 1 is provided with a water inlet communicated with the lower cavity and a water outlet communicated with the upper cavity. The upper cavity of the tank body 1 is connected with a vacuum pump 10 through an electromagnetic valve 9. The vacuum pump 10 is matched with the electromagnetic valve 9 to maintain the upper cavity of the tank body 1 in a vacuum state. A liquid level meter 7 is also arranged on one side of the tank body 1 and is used for displaying and controlling the liquid level in the tank body 1.

The tank body 1 comprises a carbon steel cylindrical body, and carbon steel arc seal heads are arranged at the upper end and the lower end of the body. The intermediate partition 8 is made of carbon steel.

Three insulation sleeves 6 (made of tetrafluoroethylene) with upper and lower ends communicated with the upper cavity and the lower cavity are circumferentially and uniformly distributed and fixedly arranged on the middle partition plate 8, and the axes of the three insulation sleeves 6 are parallel to the axis of the middle partition plate 8.

The embodiment of the invention also comprises a zero electrode 4 made of carbon steel. The zero position electrode 4 includes circular steel sheet and the three steel pipe sleeve that fixes mutually (for example the welding) with circular steel sheet of circumference equipartition, and the upper end of steel pipe sleeve is uncovered and with circular steel sheet parallel and level, the lower extreme sinks and uncovered. The three steel pipe sleeves are correspondingly arranged in three insulating sleeves 6 in a vertically sliding manner (the lower parts of the steel pipe sleeves are inserted into the corresponding insulating sleeves 6), and the outer wall surfaces of the steel pipe sleeves and the inner wall surfaces of the insulating sleeves are mutual sliding friction surfaces. The insulating sleeve 6 plays the role of insulation and fixed guide, and is a medium water channel.

Embodiments of the invention also include three insulated electrodes 2 structured as an insulated ceramic clad metal conductive core. The three insulated electrodes 2 are respectively connected to the upper arc sealing head of the tank body 1 through flanges, the lower ends of the three insulated electrodes are respectively connected with phase electrodes 3, and the phase electrodes 3 are alloy multi-leaf fan-shaped. The three phase electrodes correspond to the three steel pipe sleeves, the phase electrode 3 can correspondingly enter the steel pipe sleeve of the zero-position electrode 4, the phase electrode 3 is not in contact with the steel pipe sleeve, a certain gap is reserved, the gap is a channel for medium water to enter the upper cavity of the tank body 1 from the lower cavity of the tank body 1, and meanwhile, the medium water is also heated at the position.

The embodiment of the invention also comprises a hydraulic cylinder 5 fixedly arranged at the center of the middle partition plate 8, and the outer end (namely the upper end) of the piston rod of the hydraulic cylinder 5 is fixed at the center of the circular steel plate of the zero position electrode 4 through an insulating pad. The oil inlet and outlet pipes of the hydraulic cylinder 5 respectively penetrate through the side walls of the upper cavity and the lower cavity and then are connected with a hydraulic pump 11 so as to ensure that no moving part penetrates through the tank body 1. The hydraulic cylinder 5 is powered by a hydraulic pump 11 on the outer side of the tank body, and the zero-position electrode 4 is driven by the hydraulic cylinder 5 to lift. The relative area of the zero electrode 4 and the phase electrode 3 is changed by lifting the zero electrode 4, the heating power of the equipment is adjusted, and the outlet water temperature of the equipment is controlled.

The equipment has the working flow as follows: medium water enters a lower cavity of the tank body 1 through a water inlet at the bottom of the tank body 1, then enters a gap between the zero-position electrode 4 and the phase electrode 3 through an insulating sleeve 6 fixed on a middle partition plate 8, the zero-position electrode 4 and the phase electrode 3 are electrified and heated, the heated medium water enters an upper cavity of the tank body 1 and is discharged from a water outlet at one side of the upper cavity of the tank body 1, and a heating cycle is completed. Wherein the dielectric water has a conductivity of 50 μ s/cm or less, and is prepared from demineralized water and purified water.

Electric power forms a Y-shaped ungrounded electric system through the insulating electrode 2, the phase electrode 3, the medium water and the null electrode 4.

Claims

1. An electrode type water heating equipment, includes jar body (1), its characterized in that: a middle partition plate (8) in a circular plate form is fixedly arranged in the tank body (1), an upper cavity is arranged above the middle partition plate (8), and a lower cavity is arranged below the middle partition plate; the tank body (1) is provided with a water inlet communicated with the lower cavity and a water outlet communicated with the upper cavity; the upper cavity of the tank body (1) is connected with a vacuum pump (10) for maintaining the upper cavity in a vacuum state; three insulating sleeves (6) with upper and lower ends respectively communicated with the upper cavity and the lower cavity are circumferentially and uniformly distributed and fixedly arranged on the middle partition plate (8), and the axes of the three insulating sleeves (6) are parallel to the axis of the middle partition plate (8); the heating equipment further comprises a zero-position electrode (4), the zero-position electrode (4) comprises a circular steel plate and three steel pipe sleeves which are uniformly distributed in the circumferential direction and fixed with the circular steel plate, the upper end of each steel pipe sleeve is open and level with the circular steel plate, and the lower end of each steel pipe sleeve sinks and is open; the three steel pipe sleeves can be correspondingly arranged in the three insulating sleeves (6) in a vertically sliding manner; the heating equipment also comprises three insulated electrodes (2) of which the structures are insulating ceramics coated metal conductive cores, wherein the three insulated electrodes (2) are respectively connected to the tank body (1), the lower ends of the insulated electrodes (2) are respectively connected with phase electrodes (3) corresponding to the three steel pipe sleeves, the phase electrodes (3) can correspondingly enter the steel pipe sleeves of the zero-position electrode (4), and a certain gap is reserved between each phase electrode (3) and each steel pipe sleeve; the heating equipment also comprises a hydraulic cylinder (5) fixedly arranged at the center of the middle partition plate (8), and the upper end of a piston rod of the hydraulic cylinder (5) is fixed at the center of the circular steel plate through an insulating pad; the oil inlet and outlet pipes of the hydraulic cylinder (5) respectively penetrate through the side walls of the upper cavity and the lower cavity and then are connected with a hydraulic pump (11) so as to ensure that no moving part penetrates through the tank body (1).

2. The electrode type water heating apparatus as claimed in claim 1, wherein: the hydraulic cylinder (5) drives the zero-position electrode (4) to lift so as to adjust the power of the heating equipment.

3. The electrode type water heating apparatus as claimed in claim 1 or 2, wherein: the phase electrode (3) is in a shape of alloy multi-leaf fan.

4. The electrode type water heating apparatus as claimed in claim 1 or 2, wherein: the tank body (1) and the middle partition plate (8) are made of carbon steel.

5. The electrode type water heating apparatus as claimed in claim 3, wherein: the tank body (1) and the middle partition plate (8) are made of carbon steel.