CN210065942U

CN210065942U - Electrolytic tank of sodium hypochlorite generator with cooling structure

Info

Publication number: CN210065942U
Application number: CN201920611865.XU
Authority: CN
Inventors: 张毅
Original assignee: Beijing Qiqingshui Treatment Technology Co Ltd
Current assignee: Beijing Qiqingshui Treatment Technology Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-02-14
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to an electrolysis trough of sodium hypochlorite generator that has cooling structure, through set up a glass pipe that has seal structure in the outer pipe shell of electrolysis trough, and guarantee that the external diameter of glass pipe is less than the certain value of internal diameter of outer pipe shell, make and form a cross-section between them and be annular sealed intermediate layer space, electrolysis polar plate group places in the central space that the tip structure of glass pipe and electrolysis trough encloses, during operation electrolyte is flowed through and is heaied up under the effect of electric current by wherein, after pouring into the cooling water for intermediate layer space through the cooling water business turn over mouth of pipe, under the heat conduction of the convection heat transfer of liquid and glass pipe, the heat that the lower cooling water of temperature absorbed electrolyte reduces its temperature, can effectively control the temperature rise of electrolyte, avoided plastics material electrolysis trough main part or the possibility that the part damaged when guaranteeing electrolysis efficiency.

Description

Electrolytic tank of sodium hypochlorite generator with cooling structure

Technical Field

The utility model relates to an electrolytic cell for an electrolytic sodium hypochlorite generator, which cools electrolyte in the electrolytic cell through a sandwich structure communicated with cooling water.

Background

The electrolytic sodium hypochlorite generator utilizes the chlorine evolution reaction of saline water (1-5%) with certain concentration when passing through an electrolytic cell connected with direct current to prepare a sodium hypochlorite solution on a using site, and the temperature of electrolyte can be gradually increased in the electrolytic reaction process. When the temperature exceeds about 45 ℃, the current efficiency of electrolysis is gradually reduced, so that the energy consumption is increased, and when the temperature is increased too high, parts of the electrolysis bath made of plastic materials can be damaged, so that the energy consumption of the equipment can be reduced and the reliability of the equipment can be improved if the temperature rise can be effectively controlled.

The patent application number of CN201810162508 discloses a sodium hypochlorite generator binding electrode type cooling system, a polytetrafluoroethylene cooling pipe is spirally wound on an electrode plate group by the cooling system, the cooling pipe is immersed below the liquid level of electrolyte, and the electrolyte can be cooled after cooling water is introduced into the polytetrafluoroethylene cooling pipe. Compared with the traditional electrolytic cell without a cooling structure, the structure can effectively cool the electrolyte, but the spiral cooling pipe occupies more space, the shielding of the spiral cooling pipe to the sight line can not make people clearly see the state between the electrode plates, and the observation of the state between the electrode plates is a convenient means for checking whether the electrolytic cell has problems.

Disclosure of Invention

The utility model provides an effective refrigerated electrolysis trough can carry out electrolyte, and this electrolysis trough can improve electrolysis efficiency, reduce the energy consumption, increase equipment reliability to can not be with some good characteristics in the sacrifice traditional structure as the cost.

The utility model provides an electrolytic bath structure as follows: the ends of two plastic electrolyzers are integrated with the outer pipe shell of the electrolyzers by bonding or mechanical connection, or the three are connected and fixed into a whole by other structural parts, the joint between the ends and the outer pipe shell is ensured to be in a sealed state, a glass tube is arranged in the outer pipe shell, two ends of the glass tube are sealed by a rubber ring and two ends of the electrolyzers, so that an interlayer space with an annular cross section is formed between the two ends, the outer diameter of the glass tube is smaller than the inner diameter of the outer pipe shell by a certain value, half of the difference between the inner diameter of the outer pipe shell and the outer diameter of the glass tube is the thickness of the interlayer space, the thickness of the interlayer space is large enough to ensure the convection effect of cooling water, and the end covers of the electrolyzers, the inner cavities of the glass tubes and the hollow parts of the two ends form a central space for placing the electrolytic electrode plate group, the two end covers or the two ends are provided with an inlet and an outlet of the electrolyte which are only communicated with the central space, and the two ends are provided with an inlet and an outlet of the cooling liquid which are only communicated with the interlayer space.

When the electrolytic cell works, saline water with certain concentration enters the central space from the electrolyte inlet at one end and submerges the electrolytic electrode plate group, after two electrodes of the electrolytic electrode plate group are connected with a direct current power supply, sodium hypochlorite solution and a certain amount of hydrogen gas are generated under the action of electrolytic current, the gas-liquid mixture is discharged from the electrolyte outlet at the other end, the cooling water feed pipe is connected to the cooling water inlet at one end, the cooling water outlet at the other end is connected to the cooling water discharge pipe, the preferable method is that the water flow direction of the electrolyte and the water flow direction of the cooling water are kept opposite to improve the cooling efficiency, the heat conduction capacity of the glass pipe and the convection heat conduction of liquid flows at two sides transfer the heat of the electrolyte at the inner side of the glass pipe to the cooling water in the outer interlayer space, the electrolyte flows to the other end from one end of the central space when the electrolytic cell works, and the cooling water flows, as long as the temperature of intaking of cooling water is less than the leaving water temperature of electrolyte, can cool off electrolyte through above-mentioned structure with temperature control in certain extent, guaranteed the electrolysis efficiency and the reliability of electrolysis trough, can install temperature sensor on the pipeline of electrolyte in addition, install flowmeter or sensor on the cooling water pipeline, control the cooling water yield through manual or automatic valve to the consumption of cooling water is minimum under the assurance obtains effective refrigerated condition at electrolyte.

Drawings

FIG. 1 is a structural view of an electrolytic cell with a cooling structure according to the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

Detailed Description

The present invention will be described with reference to the accompanying drawings. Referring to the attached drawings, two PVC end heads 1 and 2 are respectively adhered to two ends of a transparent PVC outer tube shell 3, the adhering ports are in a sealed state, a groove 4 is processed on the inner side of the end head, a sealing ring 5 is placed in the groove, a glass tube 6 is arranged in the outer tube shell 3, the side surfaces of two ends of the glass tube 6 form a sealing structure through the sealing ring 5 and the end heads 1 and 2, the diameter of the outer tube shell 3 and the diameter of the glass tube 6 are adjusted to enable the thickness of an annular space 13 formed between the outer tube shell 3 and the glass tube 6 to be 6mm, an electrolytic electrode plate group 7 is arranged in an electrolytic cell, two end covers 8 and 9 of the end heads 1 and 2 are arranged, the glass tube 6, the end heads 1 and 2 and the two end covers 8 and 9 are enclosed to form a central space 15 of the electrolytic cell, an outlet 10 of an electrolytic electrode plate group electrode and an outlet 10 of sodium hypochlorite solution and hydrogen gas are arranged on the end, the lower part of the end head 1 is provided with a cooling water inlet 12 which is communicated with the left lower side of an interlayer space 13 formed by a glass tube 6 and a PVC outer tube shell 3, the upper part of the end head 2 is provided with a cooling water outlet 14 which is communicated with the right upper side of the interlayer space 13 formed by the glass tube 6 and the PVC outer tube shell 3, when an electrolytic bath works, firstly, saline solution is injected into a central space 15 of the electrolytic bath from the inlet 11, an electrolytic electrode plate group is immersed and keeps a certain flow rate, tap water is injected into the interlayer space 13 from the inlet 12 and keeps a certain flow rate, after the electrolytic electrode plate group is connected with a direct current power supply, sodium hypochlorite solution and hydrogen are generated in the area where the electrolytic electrode plate group is arranged, electrolyte flows from right to left in the central space 15, tap water flows through the interlayer space 13 from left to right and then is discharged from the cooling water outlet 14 on the end head 2, and heat conduction of the glass tube is realized through convection heat transfer of, the lower running water of temperature absorbs the heat of electrolyte and reduces its temperature, can effectively control the temperature rise of electrolyte, has avoided PVC material electrolysis trough main part or the possibility of other plastics spare parts damage when guaranteeing electrolysis efficiency.

Claims

1. The utility model provides an electrolysis trough of sodium hypochlorite generator with cooling structure, separates the groove and includes electrolysis polar plate group (7), two end structure (1) and (2), end cover (8) and (9), import (11) and export (10) of electrolyte, outer pipe shell (3) fixed as an organic whole with two end structure connection, its characterized in that: the glass tube (6) is arranged in the outer tube shell (3), the two ends of the glass tube and the end structures (1) and (2) are sealed through a sealing rubber ring (5), an interlayer space (13) with an annular cross section is formed between the inner side of the outer tube shell (3) and the outer side of the glass tube (6), and the two ends of the glass tube are respectively provided with a cooling water inlet (12) and a cooling water outlet (14).

2. Electrolytic cell for sodium hypochlorite generators according to claim 1, characterized in that: the difference between the inner diameter of the outer pipe shell (3) and the outer diameter of the glass pipe (6) ensures that the thickness of the interlayer space (13) is more than 4 mm.

3. Electrolytic cell of sodium hypochlorite generator according to claim 1 or 2, characterized in that: the outer pipe shell (3) is made of transparent PVC material.

4. Electrolytic cell of sodium hypochlorite generator according to claim 1 or 2, characterized in that: the outer pipe shell (3) is made of transparent PVC materials, the end structures (1) and (2) are made of PVC materials, and an adhesion structure is arranged between the end structures and the end structures.