CN211667597U - Liquid ammonia storage monitoring system for chlor-alkali production - Google Patents
Liquid ammonia storage monitoring system for chlor-alkali production Download PDFInfo
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- CN211667597U CN211667597U CN201922474764.5U CN201922474764U CN211667597U CN 211667597 U CN211667597 U CN 211667597U CN 201922474764 U CN201922474764 U CN 201922474764U CN 211667597 U CN211667597 U CN 211667597U
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Abstract
The utility model relates to a liquid ammonia storage monitoring system for chlor-alkali production, which belongs to the technical field of liquid ammonia storage monitoring for chlor-alkali production; the technical problem to be solved is as follows: the improvement of the hardware structure of the liquid ammonia storage monitoring system for producing the chlor-alkali is provided; the technical scheme for solving the technical problem is as follows: the device comprises a liquid ammonia storage tank, wherein a first emergency cut-off valve is arranged at a feed inlet of the liquid ammonia storage tank, a second emergency cut-off valve is arranged at a discharge outlet of the liquid ammonia storage tank, and a hydraulic sensor is further arranged at an output end of the first emergency cut-off valve; a temperature sensor and an ammonia gas concentration sensor are arranged on the wall of the liquid ammonia storage tank, and a liquid level sensor is arranged inside the liquid ammonia storage tank; the utility model discloses be applied to liquid ammonia storage control place.
Description
Technical Field
The utility model relates to a liquid ammonia storage monitored control system is used in chlor-alkali production belongs to liquid ammonia storage control technical field for chlor-alkali production.
Background
At present, a full-automatic liquid ammonia storage device is arranged in a chlor-alkali production line, frozen-35 ℃ calcium chloride brine is mainly adopted as a cooling medium, a screw ammonia compression refrigerating unit is adopted, and a refrigerant is liquid ammonia; the liquid ammonia storage device forms a dangerous source storage area, the design process is backward due to the fact that the liquid ammonia storage device is transformed based on old equipment, the requirement on automation control is low, manual stop valves are arranged on the inlet and the outlet of the liquid ammonia storage tank, if storage tank or pipeline leakage accidents occur, an operator needs to arrive at a site to manually switch the valves to handle the accidents, unsafe factors are caused to personnel, and poisoning and casualty accidents can be caused.
The existing safety guarantee technology only uses water spray to absorb ammonia gas leaked from the steel cylinder and cools the steel cylinder, so as to prevent explosion caused by overlarge pressure of the steel cylinder due to liquid ammonia gasification caused by high temperature; therefore, the tap water spraying system must be started all weather, if faults such as water cut-off and the like occur, potential safety hazards exist in the liquid ammonia storage tank, although the full-time spraying protection method is simple, the monitoring process depends on manual operation, if the problems such as leakage do not exist, tap water spraying is always used, water resources are wasted, if liquid ammonia leakage does not occur, the safety of the existing liquid ammonia storage tank protection equipment is poor, the monitoring efficiency is low, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware structure of the liquid ammonia storage monitoring system for producing the chlor-alkali is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: a liquid ammonia storage monitoring system for chlor-alkali production comprises a liquid ammonia storage tank, wherein a first emergency cut-off valve is arranged at a feed inlet of the liquid ammonia storage tank, a second emergency cut-off valve is arranged at a discharge outlet of the liquid ammonia storage tank, and a hydraulic sensor is further arranged at an output end of the first emergency cut-off valve;
a temperature sensor and an ammonia gas concentration sensor are arranged on the wall of the liquid ammonia storage tank, and a liquid level sensor is arranged inside the liquid ammonia storage tank;
the first emergency cut-off valve, the second emergency cut-off valve, the hydraulic sensor, the temperature sensor, the ammonia gas concentration sensor and the liquid level sensor are all connected with a control end of a control cabinet arranged in a monitoring room through a CAN field communication bus, an LORA wireless communication module is further arranged in the control cabinet, and the LORA wireless communication module is wirelessly connected with a monitoring terminal through a wireless network;
the signal output end of the control cabinet is also connected with a water spraying device, the water spraying device is of a greenhouse structure, the water spraying device covers the top of the whole liquid ammonia storage tank, and a plurality of groups of spray heads are uniformly arranged on the water spraying device.
And an LCD display screen and a control panel are arranged on the control cabinet.
The first emergency cut-off valve and the second emergency cut-off valve are WODE-QDSO in model;
the model of the hydraulic sensor is ZCH 304;
the model of the temperature sensor is TR 02025;
the model of the ammonia gas concentration sensor is YA-D200;
the model of the liquid level sensor is HLUZ-AF;
the controller used in the control cabinet adopts a control chip of STM32 series model;
the LORA wireless communication module is of the type SX 1278.
The utility model discloses beneficial effect for prior art possesses does: the utility model discloses according to dangerous source holding vessel district management safety production requirement, avoid taking place the emergence of poisonous and harmful gas leakage and personnel poisoning accident with the prevention, the monitored control system to the liquid ammonia storage tank for the chlor-alkali production improves, through installing corresponding chain trip valve and sensor, the unified control of cooperation controller, can promptly cut off the valve in liquid ammonia storage tank import and exit when taking place liquid ammonia storage tank or pipeline leakage, can realize the liquid ammonia storage tank whole period control and spray protection control, improve monitoring efficiency, reduce field personnel's working strength, reduce poisoning and casualty occurence of failure.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the circuit structure of the present invention;
in the figure: 1 is the liquid ammonia storage tank, 2 is first emergency cut-off valve, 3 is second emergency cut-off valve, 4 is hydraulic pressure sensor, 5 is temperature sensor, 6 is ammonia concentration sensor, 7 is level sensor, 8 is the switch board, 9 is LORA wireless communication module, 10 is monitor terminal, 11 is water spray set.
Detailed Description
As shown in fig. 1 and 2, the liquid ammonia storage monitoring system for chlor-alkali production of the present invention comprises a liquid ammonia storage tank (1), wherein a feed inlet of the liquid ammonia storage tank (1) is provided with a first emergency cut-off valve (2), a discharge outlet of the liquid ammonia storage tank (1) is provided with a second emergency cut-off valve (3), and an output end of the first emergency cut-off valve (2) is further provided with a hydraulic sensor (4);
a temperature sensor (5) and an ammonia concentration sensor (6) are arranged on the wall of the liquid ammonia storage tank (1), and a liquid level sensor (7) is arranged in the liquid ammonia storage tank (1);
the first emergency cut-off valve (2), the second emergency cut-off valve (3), the hydraulic sensor (4), the temperature sensor (5), the ammonia gas concentration sensor (6) and the liquid level sensor (7) are all connected with a control end of a control cabinet (8) arranged in a monitoring room through a CAN field communication bus, an LORA wireless communication module (9) is further arranged inside the control cabinet (8), and the LORA wireless communication module (9) is in wireless connection with a monitoring terminal (10) through a wireless network;
the signal output part of the control cabinet (8) is also connected with a water spraying device (11), the water spraying device (11) is of a greenhouse structure, the water spraying device (11) covers the top of the whole liquid ammonia storage tank (1), and a plurality of groups of spray heads are uniformly arranged on the water spraying device (11).
And an LCD display screen and a control panel are arranged on the control cabinet (8).
The first emergency cut-off valve (2) and the second emergency cut-off valve (3) are WODE-QDSO in model;
the type of the hydraulic sensor (4) is ZCH 304;
the model of the temperature sensor (5) is TR 02025;
the model of the ammonia gas concentration sensor (6) is YA-D200;
the type of the liquid level sensor (7) is HLUZ-AF;
the controller used in the control cabinet (8) adopts a control chip of STM32 series model;
the LORA wireless communication module (9) is of the type SX 1278.
The utility model discloses a reform transform current liquid ammonia storage device structure, all install the emergency cut-off valve with the import and the export of liquid ammonia storage tank, control storage tank import and exit valve switch through the DCS switch board, storage device can report to the police and automatic control emergency cut-off valve interlocking through the high limit of ammonia detection alarm when taking place the ammonia and leak, accomplish the import of liquid ammonia storage tank and the emergency cut-off of exit valve, the while control cabinet will send actuating signal to water spray set, control water spray nozzle sprays the atomized water to whole liquid ammonia storage tank surface, reduce the ammonia concentration of leaking, avoid taking place personnel's poisoning accident when the ammonia leaks.
In addition, a hydraulic sensor and a liquid level sensor are further installed in the liquid ammonia storage tank, the upper limit threshold of the liquid level height is set to 80% for alarming generally, the control cabinet can automatically control the inlet valve and the outlet valve of the storage tank to be cut off emergently when alarming is carried out, the whole process is completed through a DCS control system, and safety accidents caused by the fact that the liquid level of the storage tank is ultrahigh can be avoided.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a liquid ammonia storage monitoring system for chlor-alkali production which characterized in that: the device comprises a liquid ammonia storage tank (1), wherein a first emergency cut-off valve (2) is arranged at a feed inlet of the liquid ammonia storage tank (1), a second emergency cut-off valve (3) is arranged at a discharge outlet of the liquid ammonia storage tank (1), and a hydraulic sensor (4) is further arranged at an output end of the first emergency cut-off valve (2);
a temperature sensor (5) and an ammonia concentration sensor (6) are arranged on the wall of the liquid ammonia storage tank (1), and a liquid level sensor (7) is arranged in the liquid ammonia storage tank (1);
the first emergency cut-off valve (2), the second emergency cut-off valve (3), the hydraulic sensor (4), the temperature sensor (5), the ammonia gas concentration sensor (6) and the liquid level sensor (7) are all connected with a control end of a control cabinet (8) arranged in a monitoring room through a CAN field communication bus, an LORA wireless communication module (9) is further arranged inside the control cabinet (8), and the LORA wireless communication module (9) is in wireless connection with a monitoring terminal (10) through a wireless network;
the signal output part of the control cabinet (8) is also connected with a water spraying device (11), the water spraying device (11) is of a greenhouse structure, the water spraying device (11) covers the top of the whole liquid ammonia storage tank (1), and a plurality of groups of spray heads are uniformly arranged on the water spraying device (11).
2. The liquid ammonia storage monitoring system for chlor-alkali production according to claim 1, characterized in that: and an LCD display screen and a control panel are arranged on the control cabinet (8).
3. The liquid ammonia storage monitoring system for chlor-alkali production according to claim 2, characterized in that: the first emergency cut-off valve (2) and the second emergency cut-off valve (3) are WODE-QDSO in model;
the type of the hydraulic sensor (4) is ZCH 304;
the model of the temperature sensor (5) is TR 02025;
the model of the ammonia gas concentration sensor (6) is YA-D200;
the type of the liquid level sensor (7) is HLUZ-AF;
the controller used in the control cabinet (8) adopts a control chip of STM32 series model;
the LORA wireless communication module (9) is of the type SX 1278.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474764.5U CN211667597U (en) | 2019-12-31 | 2019-12-31 | Liquid ammonia storage monitoring system for chlor-alkali production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922474764.5U CN211667597U (en) | 2019-12-31 | 2019-12-31 | Liquid ammonia storage monitoring system for chlor-alkali production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211667597U true CN211667597U (en) | 2020-10-13 |
Family
ID=72736227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922474764.5U Active CN211667597U (en) | 2019-12-31 | 2019-12-31 | Liquid ammonia storage monitoring system for chlor-alkali production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211667597U (en) |
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2019
- 2019-12-31 CN CN201922474764.5U patent/CN211667597U/en active Active
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