Device and system for automatically switching chlorine

Abstract

The invention belongs to the technical field of magnesium chloride electrolysis equipment, and relates to a device and a system for automatically switching chlorine. Comprising a gas collecting hood, the gas collecting hood is connected with a chlorine main pipe, the chlorine main pipe is connected with a chlorine branch pipe module, chlorine is conveyed to a chlorine main pipe module through the gas collecting hood, the chlorine main pipe and the chlorine branch pipe module in sequence, and the chlorine branch pipe module comprises a first pneumatic valve and a second pneumatic valve. The control unit controls the opening and closing states of the first pneumatic valve and the second pneumatic valve according to the adjusting signals. The first branch pipe and the second branch pipe of the chlorine system can be automatically switched on the premise that current is not reduced, the total yield of liquid magnesium is increased, the labor intensity of field staff is reduced, and risks caused by manual operation are reduced. And meanwhile, the automatic chlorine switching system can realize the production automation of the sponge titanium, and can enhance the continuity and stability of the production.

Description

Technical Field

[0001] The invention belongs to the technical field of magnesium chloride electrolysis equipment and relates to a device and a system for automatically switching chlorine. Background Art

[0002] In the process of magnesium electrolysis production, switching the chlorine system can not only increase the chlorine concentration, but also reduce the corrosion of the gas to the pipeline, etc., and increase the service life. In the prior art, the production workshop generally uses manual switching of chlorine. The specific implementation process is: after the current of the series-connected electrolytic cells drops to 0, the blind plates of each chlorine branch pipe after each electrolytic cell are switched, and when the chlorine pipeline is switched, the current is restored and normal production is resumed. However, this process lasts for a long time, which increases the labor intensity on site and reduces the output of the workshop, affecting the normal production of the workshop; in addition, the irritating gas may overflow and disperse in the air, and be inhaled by the operator to cause respiratory mucosal damage, endangering the life and health of the operator. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and to provide a device for automatically switching chlorine gas.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A device for automatically switching chlorine gas comprises a gas collecting hood, the gas collecting hood is connected with a chlorine main pipe, the chlorine main pipe is connected with a chlorine branch pipe module, chlorine gas is transmitted to a chlorine main pipe module through the gas collecting hood, the chlorine main pipe and the chlorine branch pipe module in sequence, each of the chlorine branch pipe modules comprises a first pneumatic valve and a second pneumatic valve, the first pneumatic valve and the second pneumatic valve are opened and closed by an actuator, the action of the actuator is controlled by a control unit, and the input end of the control unit is electrically connected to a detection module.

[0006] Furthermore, the first pneumatic valve and the second pneumatic valve have an interlocking function.

[0007] Furthermore, the chlorine branch pipe module includes a first chlorine branch pipe and a second chlorine branch pipe, the first pneumatic valve is installed at the upper end of the first chlorine branch pipe, and the second pneumatic valve is installed at the upper end of the second chlorine branch pipe.

[0008] Furthermore, the first pneumatic valve and the second pneumatic valve are both pneumatic piston hemispherical valves.

[0009] Furthermore, the control unit comprises:

[0010] Storage module: used for storing status information of the first pneumatic valve and the second pneumatic valve;

[0011] Display module: used to display the opening and closing status of the first pneumatic valve and the second pneumatic valve.

[0012] Furthermore, the detection module is a touch control unit.

[0013] Furthermore, the detection module is a chlorine gas concentration detector, the chlorine gas concentration detector is located in a gas collecting hood, and the output end of the chlorine gas concentration detector is electrically connected to the input end of the control unit.

[0014] Furthermore, the detection module is a chlorine concentration monitor, which is located outside the chlorine branch pipe module, and the output end of the chlorine concentration monitor is electrically connected to the input end of the control unit.

[0015] The present invention also provides a system for automatically switching a chlorine gas device, comprising:

[0016] Detection module: The adjustment signal sent by the detection module transmits the control command to the control unit;

[0017] Control module: controls the actions of the actuators of the first pneumatic valve and the second pneumatic valve through the control unit;

[0018] Execution module: The opening and closing of the first pneumatic valve and the second pneumatic valve are realized through the action of the actuator.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a device for automatically switching chlorine gas, which can realize automatic switching of the first branch pipe and the second branch pipe of the chlorine gas system without reducing the current, thereby increasing the total output of liquid magnesium, reducing the labor intensity of on-site personnel, and reducing the risks caused by manual operation. At the same time, the automatic switching of the chlorine gas system can realize the automation of sponge titanium production and enhance the continuity and stability of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a schematic diagram of the device for automatically switching chlorine gas of the present invention.

[0024] Among them: 1 is the gas collecting hood; 2.1 is the first pneumatic valve; 2.2 is the second pneumatic valve; 3 is the chlorine branch pipe module; 3.1 is the first chlorine branch pipe; 3.2 is the second chlorine branch pipe; 4 is the chlorine main pipe module; 5 is the chlorine main pipe. DETAILED DESCRIPTION

[0025] Here, exemplary embodiments will be described in detail, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples consistent with some aspects of the present invention described in detail in the appended claims.

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Example

[0028] like Figure 1 As shown, a device for automatically switching chlorine gas comprises a gas collecting hood 1, to which a chlorine main pipe 5 is connected, and the chlorine main pipe 5 is connected to a chlorine branch pipe module 3. Chlorine gas is sequentially transmitted to a chlorine main pipe module 4 through the gas collecting hood 1, the chlorine main pipe 5, and the chlorine branch pipe module 3. Each of the chlorine branch pipe modules 3 comprises a first pneumatic valve 2.1 and a second pneumatic valve 2.2; the first pneumatic valve 2.1 and the second pneumatic valve 2.2 are opened and closed by an actuator, and the action of the actuator is controlled by a control unit, and the input end of the control unit is electrically connected to a detection module.

[0029] In this embodiment: the automatic switching chlorine system device includes a gas collecting hood 1 connected to the magnesium chloride electrolysis device, a chlorine branch pipe module 3 and a first pneumatic valve 2.1 and a second pneumatic valve 2.2. Compared with the prior art, the device can set the adjustment signal according to actual needs, convert the adjustment signal into the displacement of the pneumatic actuator, and open or close the switches of the first pneumatic valve 2.1 and the second pneumatic valve 2.2.

[0030] Specifically, the output end of the control unit controls the switch of the first pneumatic valve 2.1 and the second pneumatic valve 2.2 respectively, and the input end of the control unit is electrically connected to the detection module. The control unit is a DCS control system, and two operating modes are set, namely, "operation mode" and "switching mode"; in the "operation mode", both the first pneumatic valve 2.1 and the second pneumatic valve 2.2 are opened; in the "switching mode", one of the two pneumatic valves is closed. When it is detected that the target system is opened in the program in the DCS control system, the first pneumatic valve 2.1 or the second pneumatic valve 2.2 is closed through the "switching mode" of the chlorine branch pipe currently used in the DCS control system, and the closing of the first chlorine branch pipe 3.1 or the second chlorine branch pipe 3.2 is completed (the closing of the chlorine branch pipe currently used), and the "switching mode" is turned on when there is no gas passing through the system (the switching mode corresponds to the chlorine branch pipe used next), and the first pneumatic valve 2.1 or the second pneumatic valve 2.2 is opened to allow gas to pass.

[0031] It should be noted that if Figure 1 As shown, it includes a gas collecting hood 1 connected to the magnesium chloride electrolysis device for collecting chlorine, the gas collecting hood 1 is connected to the chlorine main pipe 5 for chlorine to pass through, the chlorine main pipe 5 is connected to the first chlorine branch pipe 3.1 and the second chlorine branch pipe 3.2, the first chlorine branch pipe 3.1 is provided with a first pneumatic valve 2.1, the second chlorine branch pipe 3.2 is provided with a second pneumatic valve 2.2, the first pneumatic valve 2.1 is used to control the opening and closing of the first chlorine branch pipe 3.1, the chlorine main pipe module includes a first main pipe and a second main pipe, the first chlorine branch pipe 3.1 is connected to the first main pipe in the chlorine main pipe module 4, the second chlorine branch pipe 3.2 is connected to the second main pipe in the chlorine main pipe module 4, for gathering chlorine.

[0032] Furthermore, the chlorine branch pipe module 3 comprises a first chlorine branch pipe 3.1 and a second chlorine branch pipe 3.2, the first pneumatic valve 2.1 is installed at the upper end of the first chlorine branch pipe 3.1, and the second pneumatic valve 2.2 is installed at the upper end of the second chlorine branch pipe 3.2.

[0033] In this embodiment, the first pneumatic valve 2.1 can be installed at the upper end, middle part, lower end, etc. of the first chlorine gas branch pipe 3.1.

[0034] Furthermore, the first pneumatic valve 2.1 and the second pneumatic valve 2.2 have an interlocking function.

[0035] In this embodiment: the first pneumatic valve 2.1 and the second pneumatic valve 2.2 can be opened at the same time, but cannot be closed at the same time, and one of them must be in the open state. For example, when switching from the first chlorine branch pipe 3.1 to the second chlorine branch pipe 3.2, after starting the DCS program through the control unit, by turning on the "switching mode" (corresponding to the first chlorine branch pipe 3.1), the first pneumatic valve 2.1 is closed, and the first chlorine branch pipe 3.1 is closed, so that no chlorine passes through the first chlorine branch pipe; then, the control unit turns on the "switching mode" (corresponding to the second chlorine branch pipe 3.2), the second pneumatic valve 2.2 is opened, and chlorine is allowed to pass through, thus completing the operation of automatically switching chlorine in the magnesium chloride electrolysis device, and the same applies to switching from the second chlorine branch pipe 3.2 to the chlorine branch pipe system.

[0036] Furthermore, the regulating valve is a pneumatic piston type semi-ball valve, and the air supply pressure is 0.2-0.4Mpa.

[0037] Furthermore, the control unit is a DCS control unit.

[0038] In this embodiment, the DCS control unit is a distributed control system based on a microprocessor. It integrates computer technology, communication technology, control technology and graphic display technology, adopts the design concept of distributed control, centralized operation and hierarchical management, and distributes the control functions to various control units to achieve real-time monitoring, control and optimization of the production process.

[0039] Furthermore, the control unit includes a storage module and a display module, the storage module is used to store status information of the first pneumatic valve and the second pneumatic valve, and the display module is used to display the opening and closing status of the first pneumatic valve and the second pneumatic valve.

[0040] In this embodiment: the device is provided with a host, and a display screen is provided on the host, and the opening and closing states of the first pneumatic valve 2.1 and the second pneumatic valve 2.2 are displayed on the display screen. The storage module stores the state information of the first pneumatic valve 2.1 and the second pneumatic valve 2.2, such as the opening time and closing time of each time.

[0041] Furthermore, the output end of the control unit controls the switch of the first pneumatic valve 2.1 and the second pneumatic valve 2.2 respectively, and the input end of the control unit is electrically connected to the detection module.

[0042] Furthermore, the detection module is a touch control unit.

[0043] In this embodiment: the touch unit is located on the touch display screen, the adjustment signal is input through the touch unit, and the control instruction is transmitted to the control unit through the adjustment signal.

[0044] In addition, the detection module can also be a chlorine gas concentration detector, which is located in the gas collecting hood 1, and the output end of the chlorine gas concentration detector is electrically connected to the input end of the control unit.

[0045] In this embodiment: the chlorine concentration detector sends the detected chlorine concentration to the control unit in real time; a corresponding chlorine concentration threshold is set. When the chlorine concentration detector detects that the chlorine concentration reaches the corresponding threshold, the chlorine concentration is too high. The control unit controls the switches of the first pneumatic valve 2.1 and the second pneumatic valve 2.2 to be opened at the same time. When the corresponding threshold is not reached, only one of the first pneumatic valve 2.1 and the second pneumatic valve 2.2 can be opened.

[0046] In addition, the detection module may also be a chlorine concentration monitor, which is located outside the chlorine main pipe 5, and the output end of the chlorine concentration monitor is electrically connected to the input end of the control unit.

[0047] In this embodiment: the purpose of setting the chlorine concentration monitor is to monitor in real time whether there is gas leakage in the first chlorine branch pipe 3.1 and the second chlorine branch pipe 3.2. If chlorine leakage occurs in one of the first chlorine branch pipe 3.1 and the second chlorine branch pipe 3.2, the control unit controls the corresponding pneumatic valve to be forced closed, and at the same time, the pneumatic valve of the other spare chlorine branch pipe is opened.

[0048] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0049] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A device for automatically switching chlorine gas, characterized in that: The invention comprises a gas collecting hood (1), the gas collecting hood (1) being connected with a chlorine main pipe (5), the chlorine main pipe (5) being connected with a chlorine branch pipe module (3), the chlorine gas being transmitted to a chlorine main pipe module (4) through the gas collecting hood (1), the chlorine main pipe (5) and the chlorine branch pipe module (3) in sequence, each of the chlorine branch pipe modules (3) comprising a first pneumatic valve (2.1) and a second pneumatic valve (2.2); the first pneumatic valve (2.1) and the second pneumatic valve (2.2) are opened and closed by an actuator, the action of the actuator is controlled by a control unit, and the input end of the control unit is electrically connected to a detection module.

2. A device for automatically switching chlorine gas according to claim 1, characterized in that: The first pneumatic valve (2.1) and the second pneumatic valve (2.2) have an interlocking function.

3. A device for automatically switching chlorine gas according to claim 1, characterized in that: The chlorine gas branch pipe module (3) comprises a first chlorine gas branch pipe (3.1) and a second chlorine gas branch pipe (3.2); the first pneumatic valve (2.1) is installed at the upper end of the first chlorine gas branch pipe (3.1); and the second pneumatic valve (2.2) is installed at the upper end of the second chlorine gas branch pipe (3.2).

4. A device for automatically switching chlorine gas according to claim 1, characterized in that: The first pneumatic valve (2.1) and the second pneumatic valve (2.2) are both pneumatic piston-type semi-ball valves.

5. A device for automatically switching chlorine gas according to claim 1, characterized in that: The control unit comprises: Storage module: used for storing status information of the first pneumatic valve (2.1) and the second pneumatic valve (2.2); Display module: used to display the opening and closing states of the first pneumatic valve (2.1) and the second pneumatic valve (2.2).

6. A device for automatically switching chlorine gas according to claim 1, characterized in that: The detection module is a touch control unit.

7. A device for automatically switching chlorine gas according to claim 1, characterized in that: The detection module is a chlorine concentration detector, which is located in the gas collecting hood (1), and the output end of the chlorine concentration detector is electrically connected to the input end of the control unit.

8. A device for automatically switching chlorine gas according to claim 1, characterized in that: The detection module is a chlorine concentration monitor, which is located outside the chlorine branch pipe module (3), and the output end of the chlorine concentration monitor is electrically connected to the input end of the control unit.

9. A system for automatically switching chlorine gas according to any one of claims 1 to 8, characterized in that: include: Detection module: The adjustment signal sent by the detection module transmits the control command to the control unit; Control module: controls the actions of the actuators of the first pneumatic valve (2.1) and the second pneumatic valve (2.2) through the control unit; Execution module: realizes the opening and closing of the first pneumatic valve (2.1) and the second pneumatic valve (2.2) through the action of the actuator.

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