CN210051496U

CN210051496U - Accurate leakage detection equipment for electrolytic cell based on helium

Info

Publication number: CN210051496U
Application number: CN201921191505.5U
Authority: CN
Inventors: 李龙辉; 李民堂; 孙惠庆; 马立文; 李娟�; 周厚国; 王彬
Original assignee: SHANDONG BEFAR GROUP DONGRUI CHEMICAL Co Ltd
Current assignee: SHANDONG BEFAR GROUP DONGRUI CHEMICAL Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-02-11
Anticipated expiration: 2029-07-26

Abstract

The utility model discloses an accurate equipment of leaking hunting of electrolysis trough based on helium, include: the helium gas bottle, the gas buffer tube, the helium gas distribution platform, the detection chamber, the helium gas detection instrument and the online computer recording display equipment, the electrolytic cell accurate leakage detection equipment based on the helium gas has simple process, compared with the prior art, the basic gas path pipeline does not need to be changed, only the nitrogen gas is replaced by the helium gas, and a helium gas detector is added; the utility model discloses the investment is economized, and area is little, because required equipment is less, and the investment is relatively lower, and the scene also need not extra expansion, increase on original basis detect room and ventilation unit can, this accurate equipment that leaks hunting based on the electrolysis trough of helium, it is high to detect the precision, and the helium molecule is little for nitrogen gas a lot, and the permeability is strong, and the detector precision is high, can reach-12 orders of magnitude, the getting rid of electrolysis trough defect that can be good to can be to leakage point accurate positioning.

Description

Accurate leakage detection equipment for electrolytic cell based on helium

Technical Field

The utility model relates to a leak test technical field of cell groove specifically is an accurate equipment of leaking hunting of electrolysis trough based on helium.

Background

At present, in the fields of aerospace, petrochemical industry, thermotechnical refrigeration and the like, equipment with stronger sealing performance is required to be used. When the equipment is used, leakage detection work needs to be carried out on the equipment in consideration of functions, performance, safety, service life and the like, and whether the leakage rate of the equipment meets the requirements or not is detected.

For equipment with a large volume, a helium mass spectrometer leak detection method is generally adopted, namely, the equipment to be detected is placed in a larger collecting chamber, helium gas with certain pressure is filled into the equipment to be detected to serve as detection gas, through leakage accumulation for certain time, sampling is carried out in the collecting chamber, and corresponding gas detection equipment, such as a helium mass spectrometer leak detector, is used for detecting and calculating the leak rate of the equipment.

At present, the leakage test of the conventional electrolytic cell is carried out by nitrogen, the electrolytic cell is soaked in water for leakage test by introducing nitrogen after recoating or a new half shell in a manufacturer, and the leakage test is carried out by introducing nitrogen to control certain pressure and maintaining the pressure for 15min after returning to a production place for installing an ionic membrane, the method can detect some obvious defects of the electrolytic cell such as gaps generated by aging of conductive strips or flange strip installation defects, but can not effectively detect some relatively fine defects, for example, some fine defects can appear on the end face of a unit cell along with the increase of the operation period, particularly the conductive strip part on the cathode side, the penetration force of nitrogen molecules at the parts is insufficient and can not be effectively detected, even if the defects are slightly leaked, because the content of the nitrogen in the natural world is larger, no effective detection means can be provided for the trace leakage, and because the operating conditions of the electrolytic cell are harsh, the operation temperature is close to 90 ℃, the cathode and the anode of the material are respectively 32% of caustic soda and chlorine, and the like, and the defects gradually appear to form leakage points under the condition, and finally the shutdown is caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide an accurate equipment of leaking hunting of electrolysis trough based on helium, can be with the accurate finding out of leakage point, the detection of electrolysis trough equipment completion back gas tightness is equipped with and has brought the facility, can be with the detection data networking simultaneously, can do further analysis to the cell slot situation according to the leakage point magnitude of magnitude, has improved the use reliability of cell slot, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: an accurate leakage detection device for an electrolysis cell based on helium comprises; the helium tank comprises a helium tank, a gas buffer tube, a helium distribution table, a detection chamber, a helium detection instrument and an online computer recording display device, wherein a pressure reducing valve is arranged at an air outlet of the helium tank, the pressure reducing valve is connected with an air inlet valve through a gas source tube, a five-way tube is connected onto the air inlet valve, other four tube orifices of the five-way tube are respectively connected with a vent valve, a pressure control valve, a spare port and an air outlet valve, the air outlet valve is connected with an air inlet end of the helium distribution table through a pipeline, the pressure control valve is connected with an air inlet of the gas buffer tube through a pipeline, a U-shaped pressure gauge is arranged at the air inlet of the gas buffer tube, a unit groove is arranged in the detection chamber, a cathode side air inlet and an anode side air inlet are respectively arranged at a cathode and an anode of the, the helium detection instrument comprises an over-detection analyzer, a vacuum pump, a motor and a detector trolley, wherein an output shaft of the motor is connected with an input shaft of the vacuum pump through a coupler, a detection gas suction inlet, a liquid crystal display, a setting button and a data connector port are arranged on the detection analyzer, an output end of the data connector port is electrically connected with an input end of an online computer recording display device through a lead, the detection gas suction inlet is connected with a filtering suction probe through an air suction pipe of the helium detector, the filtering suction probe is arranged in a detection chamber, and input ends of the detection analyzer, the vacuum pump, the online computer recording display device, a ventilation fan and the motor are electrically connected with an output end of an external power supply through an external control switch.

Further, the lateral surface of U-shaped pressure gauge is equipped with retaining clip, retaining clip's quantity is no less than three, is no less than three retaining clip from last down evenly distributed at the lateral surface of U-shaped pressure gauge, and retaining clip's setting has made things convenient for the fixed mounting of U-shaped pressure gauge.

Further, the up end of U-shaped pressure gauge is equipped with the water filling port, and the lateral surface of U-shaped pressure gauge is equipped with liquid level standard mark, and the lateral surface lower extreme of U-shaped pressure gauge is equipped with puts clean mouth, and the water filling port has made things convenient for the maintenance of U-shaped pressure gauge with putting setting up of clean mouth to use.

Further, the inside of detecting the room is equipped with initiative closed type blow vent and vent, and the position department that the inside of detecting the room is close to initiative closed type blow vent is equipped with ventilation blower, and ventilation blower's input is connected through the output electricity of external control switch with external power source, and ventilation blower's setting has made things convenient for the heat dissipation of ventilating of consumer.

Further, the unit groove carries out fixed mounting through the flange strip, is equipped with the unit groove busbar on the unit groove, and the lateral surface of unit groove is held by the unit groove backing plate frame through unit groove backing plate frame with adding, and unit groove backing plate, unit groove backing plate frame and unit groove pass through unit groove sheet frame tie rod fixed connection.

Compared with the prior art, the beneficial effects of the utility model are that: this accurate equipment of leaking hunting of electrolysis trough based on helium has following beneficial benefit:

1. the accurate leakage detection equipment for the helium-based electrolytic cell has the advantages that the process is simple, compared with the prior art, a basic gas path pipeline is not changed, only nitrogen is replaced by helium, and a helium detector is added; the utility model discloses the investment is economized, and area is little, because required equipment is less, the investment is relatively lower, and the scene also need not extra extension yet, increase on original basis detect room and ventilation unit can.

2. This accurate equipment of leaking hunting of electrolysis trough based on helium, it is high to detect the precision, the helium molecule is little for nitrogen gas a lot, the permeability is strong, the detector precision is high, can reach-12 orders of magnitude, the getting rid of electrolysis trough defect that can be good, and can be to the accurate location of leak point, simultaneously, this accurate equipment of leaking hunting of electrolysis trough based on helium, can do data analysis, the detector can be networked and the record detection condition, to the data of accumulation in the testing process, can carry out the analysis summary, further judge the whole situation of electrolysis trough.

3. This accurate equipment of leaking hunting of electrolysis trough based on helium, environmental pollution is few, and is clean harmless, and helium belongs to inert gas, can not have any injury to atmosphere and personnel, the operation of being convenient for, simultaneously, the utility model discloses do not have the great operation of the degree of difficulty, the principle is simple, easier operation.

Drawings

FIG. 1 is a helium leak detection flow chart;

FIG. 2 is a schematic view of the unit cell backing plate and installation;

FIG. 3 is a schematic view of a unit cell backing plate structure;

FIG. 4 is a schematic view of a helium detection instrument.

In the figure: 1 pressure reducing valve, 2 air source pipe, 3 air inlet valve, 4 air release valve, 5 pressure control valve, 6 spare port, 7 air outlet valve, 8 helium bottle, 9 gas buffer pipe, 10 fixing clip, 11U-shaped pressure gauge, 12 air release port, 13 helium distribution table, 14 liquid level standard mark, 15 detection analyzer, 16 vacuum pump, 17 online computer recording display equipment, 18 ventilation port, 19 anode side air inlet, 20 cathode side air inlet, 21 flange strip, 22 ventilation fan, 23 unit groove, 24 unit groove conducting strip, 25 filtering suction probe, 26 detection chamber, 27 unit groove backing plate, 28 unit groove backing plate frame, 29 unit groove plate frame fastening rod, 30 helium detector suction pipe, 31 liquid crystal display, 32 setting key, 33 data connector port, 34 motor, 35 detector trolley, 36 detection gas suction port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides an accurate leak hunting equipment of electrolysis trough based on helium according to a technical scheme, including: the helium tank 8, the gas buffer tube 9, the helium distribution platform 13, the detection chamber 26, the helium detection instrument and the online computer recording display device 17, a pressure reducing valve 1 is arranged at the gas outlet of the helium tank 8, the pressure reducing valve 1 is connected with a gas inlet valve 3 through a gas source pipe 2, a five-way pipe is connected on the gas inlet valve 3, other four pipe orifices of the five-way pipe are respectively connected with a vent valve 4, a pressure control valve 5, a spare port 6 and a gas outlet valve 7, the gas outlet valve 7 is connected with the gas inlet end of the helium distribution platform 13 through a pipeline, the pressure control valve 5 is connected with the gas inlet of the gas buffer tube 9 through a pipeline, a U-shaped pressure gauge 11 is arranged at the gas inlet of the gas buffer tube 9, fixing clips 10 are arranged on the outer side surface of the U-shaped pressure gauge 11, the number of the fixing clips 10 is not less than, the upper end surface of the U-shaped pressure gauge 11 is provided with a water injection port, the outer side surface of the U-shaped pressure gauge 11 is provided with a liquid level standard mark 14, the lower end of the outer side surface of the U-shaped pressure gauge 11 is provided with a clean discharge port 12, the inside of the detection chamber 26 is provided with an active closed type ventilation port and a ventilation port 18, the inside of the detection chamber 26 is provided with a ventilation fan 22 at a position close to the active closed type ventilation port, the input end of the ventilation fan 22 is electrically connected with the output end of an external power supply through an external control switch, the inside of the detection chamber 26 is provided with a unit groove 23, the cathode side air inlet 20 and the anode side air inlet 19 of the unit groove 23 are respectively installed at the cathode and the anode, the cathode side air inlet 20 and the anode side air inlet 19 are respectively connected with the air outlet of a helium distribution platform 13 through a guide pipe, the unit groove 23 is fixedly, the unit cell backing plate 27, the unit cell backing plate frame 28 and the unit cell 23 are fixedly connected through a unit cell frame fastening rod 29, the helium detection instrument comprises an over-detection analyzer 15, a vacuum pump 16, a motor 34 and a detector trolley 35, an output shaft of the motor 34 is connected with an input shaft of the vacuum pump 16 through a coupling, the detection analyzer 15 is provided with a detection gas suction inlet 36, a liquid crystal display 31, a setting key 32 and a data connector port 33, an output end of the data connector port 33 is electrically connected with an input end of the on-line computer recording and displaying device 17 through a lead, the detection gas suction inlet 36 is connected with a filtration and suction probe 25 through an air suction pipe 30 of the helium detector, the filtration and suction probe 25 is arranged inside the detection chamber 26, input ends of the detection analyzer 15, the vacuum pump 16, the on-line computer recording and displaying device 17, the ventilation fan 22 and the motor 34 are electrically connected, accurate leak hunting equipment of electrolysis trough based on helium can be with the accurate finding out of leakage point, can high efficiency carry out gas tightness to the electrolysis trough after the equipment is accomplished and detect.

When in use: the high-purity helium primarily reduces pressure through a pressure reducing valve 1, the low-pressure side controls the pressure to be 0.3MPa, the gas reaches an air inlet valve 3 of an air path control disc through an air source tube 2, a pressure control valve 5 is firstly opened, at the moment, a gas buffer tube 9 and a U-shaped pressure gauge 11 are communicated with the air path control disc, at the moment, the liquid level difference 3m of the U-shaped pressure gauge 11 is controlled through controlling the air inlet valve 3, the helium enters a helium distribution table 13 after the pressure is stabilized through an air outlet valve 7, and enters a unit cell anode side 19 and a unit cell cathode side 20, a ventilation fan 22 is opened at the moment, the air flow in a detection chamber 26 is kept to form a replacement state, finally, a primary alarm detection order ^-8Pam2/s, and start the helium gas detector, the helium gas detector has a vacuum pump 16, the vacuum pump is connected with a detection analyzer 15 through a pipeline, the analyzer is connected with a filter probe 25 through a helium gas detection air suction pipe 30, if helium gas leakage exists, the helium gas is sucked into the analyzer 15 through a head, once the leakage amount of a set order of magnitude is reached, the leakage amount analyzer 15 gives an alarm, the leakage amount is displayed in real time, once a certain part is determined to have leakage, the order of magnitude alarm value can be reduced through adjustment, finally, a leakage point can be positioned, detection data of the electrolytic cell can be detected through adjustmentAnd transmitting the data to a computer, recording related detection parameters, and forming data information to further study and judge the overall condition of the cell.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An accurate leakage detection device for an electrolysis cell based on helium comprises; helium bottle (8), gaseous buffer tube (9), helium gas distribution platform (13), detection room (26), helium gas detecting instrument and online computer record display device (17), its characterized in that: the gas outlet of helium bottle (8) is equipped with relief pressure valve (1), and relief pressure valve (1) is connected with air inlet valve (3) through air source pipe (2), is connected with the five-way pipe on air inlet valve (3), and other four mouths of pipe of five-way pipe are connected with atmospheric valve (4), pressure control valve (5), reserve mouth (6) and gas outlet valve (7) respectively, gas outlet valve (7) link to each other through the inlet end of pipeline with helium gas distribution platform (13), and pressure control valve (5) link to each other through the air inlet of pipeline with gas buffer tube (9), and the air inlet department of gas buffer tube (9) is equipped with U-shaped pressure gauge (11), the inside of detecting chamber (26) is equipped with unit cell (23), and cathode side air inlet (20) and anode side air inlet (19) are installed respectively to the negative pole side of unit cell (23) and positive pole punishment, and cathode side air inlet (20) and anode side air inlet (19) are respectively The helium detection instrument comprises an over-detection analyzer (15), a vacuum pump (16), a motor (34) and a detector trolley (35), an output shaft of the motor (34) is connected with an input shaft of the vacuum pump (16) through a coupler, a detection gas suction inlet (36), a liquid crystal display (31), a setting key (32) and a data connector port (33) are arranged on the detection analyzer (15), an output end of the data connector port (33) is electrically connected with an input end of an online computer recording display device (17) through a lead, the detection gas suction inlet (36) is connected with a filtering suction probe (25) through a helium detector air suction pipe (30), the filtering suction probe (25) is arranged inside a detection chamber (26), and input ends of the detection analyzer (15), the vacuum pump (16), the online computer recording display device (17), a ventilation fan (22) and the motor (34) are electrically connected with an output end of an external power supply through an external control switch.

2. A helium based electrolyzer accurate leak detection apparatus as claimed in claim 1 wherein: the lateral surface of U-shaped pressure gauge (11) is equipped with fixation clamp (10), the quantity of fixation clamp (10) is no less than three, is no less than three fixation clamp (10) from last down evenly distributed at the lateral surface of U-shaped pressure gauge (11).

3. A helium based electrolyzer accurate leak detection apparatus as claimed in claim 1 wherein: the upper end surface of the U-shaped pressure gauge (11) is provided with a water filling port, the outer side surface of the U-shaped pressure gauge (11) is provided with a liquid level standard mark (14), and the lower end of the outer side surface of the U-shaped pressure gauge (11) is provided with a clean discharging port (12).

4. A helium based electrolyzer accurate leak detection apparatus as claimed in claim 1 wherein: the inside of detecting room (26) is equipped with initiative closed type blow vent and vent (18), and the inside of detecting room (26) is close to the position department of initiative closed type blow vent and is equipped with ventilation fan (22), and the input of ventilation fan (22) is connected with the output electricity of external power source through external control switch.

5. A helium based electrolyzer accurate leak detection apparatus as claimed in claim 1 wherein: unit groove (23) carry out fixed mounting through flange strip (21), are equipped with unit groove busbar (24) on unit groove (23), and the lateral surface of unit groove (23) is held by unit groove backing plate frame (27) through unit groove backing plate frame (28) with, and unit groove backing plate (27), unit groove backing plate frame (28) and unit groove (23) are through unit groove sheet frame anchorage bar (29) fixed connection.