CN215831672U - Desalted water pressure stabilizing system - Google Patents
Desalted water pressure stabilizing system Download PDFInfo
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- CN215831672U CN215831672U CN202122215442.6U CN202122215442U CN215831672U CN 215831672 U CN215831672 U CN 215831672U CN 202122215442 U CN202122215442 U CN 202122215442U CN 215831672 U CN215831672 U CN 215831672U
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- desalted water
- water
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- desalted
- desalination
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Abstract
The utility model discloses a desalination water pressure stabilizing system, which comprises a desalination water tank, wherein a desalination water pump is arranged in the desalination water tank, a desalination water outlet of the desalination water pump is respectively connected with a heating desalination water pipe and a normal-temperature desalination water pipe, the heating desalination water pipe is connected with a water inlet of a desalination water heater, the heating desalination water pipe is connected with a return port of the desalination water tank through a return pipe, an adjusting valve is arranged on the return pipe, and a pressure gauge is arranged on the heating desalination water pipe between the desalination water pump and the return pipe; the water inlet of the desalted water heater is provided with a safety valve, and the outlet of the safety valve is connected with the return port of the desalted water tank. When the pressure gauge detects that the pressure of the desalted water in the desalted water heating pipe is greater than or equal to 1.1MPa, the opening degree is adjusted by the adjusting valve according to the amount of the desalted water greater than 1.1MPa, so that part of desalted water flows back to the pipe through desalted water and flows back to the desalted water tank, the pressure of the desalted water flowing into the desalted water heater is ensured to be less than 1.1MPa, the whole plant is prevented from jumping due to tripping of a safety valve of the desalted water heater, and the normal production of the system is ensured.
Description
The technical field is as follows:
the utility model relates to the field of urea production, in particular to a desalted water pressure stabilizing system.
Background art:
in the process of urea production, a large amount of desalted water is needed, desalted water sent by an outward pipeline of a desalted water tank is divided into two parts, one part is sent to a production system which does not need to be heated, and the other part needs to be heated by a desalted water heater first and then sent to the production system which needs to be heated. However, in the actual production process, there are two problems:
1. during the start-up and shutdown periods, the fluctuation of the desalted water consumption of each production system is large, and the desalted water pump is frequently started and stopped according to the pipeline pressure, so that the safety threat is caused to the stable operation of the desalted water pump.
2. Meanwhile, the normal use of the desalted water heater can be influenced due to the unstable pressure of the desalted water, the pressure of the desalted water entering the desalted water heater is less than 1.1MPa due to the equipment use requirement of the desalted water heater, and if the pressure of the desalted water on a water inlet pipe of the desalted water heater is more than or equal to 1.1MPa, the safety valve is tripped to protect a production system, and the desalted water heater is tripped; if the opening of the pump outlet valve is adjusted to ensure the water pressure entering the desalted water heater, the pump outlet valve in a half-open state can cause sealing damage due to long-time flushing, and the normal operation of the whole production system is influenced.
The utility model has the following contents:
the utility model aims to provide a desalted water pressure stabilizing system for ensuring the normal operation of a production system.
The utility model is implemented by the following technical scheme:
a desalination water pressure stabilizing system comprises a desalination water tank, wherein a desalination water pump is installed in the desalination water tank, a desalination water outlet of the desalination water pump is connected with a desalination water heating pipe and a normal-temperature desalination water heating pipe respectively, the desalination water heating pipe is connected with a water inlet of a desalination water heater, the desalination water heating pipe is connected with a return port of the desalination water tank through a return pipe, an adjusting valve is installed on the return pipe, and a pressure gauge is installed on the desalination water heating pipe between the desalination water pump and the return pipe; a safety valve is arranged at a water inlet of the desalted water heater, and an outlet of the safety valve is connected with a return port of the desalted water tank;
the pressure gauge is electrically connected with a signal input end of the controller, and the regulating valve is electrically connected with a signal output end of the controller.
Preferably, a shut-off valve is mounted on the return pipe.
The utility model has the advantages that: when the pressure gauge detects that the pressure of desalted water in the desalted water heating pipe is less than 1.1MPa, the regulating valve is in a closed state, and the system normally operates; when the pressure gauge detects that the pressure of the desalted water in the desalted water heating pipe is greater than or equal to 1.1MPa, the opening degree is adjusted by the adjusting valve according to the amount of the desalted water greater than 1.1MPa, so that part of desalted water flows back to the pipe through desalted water and flows back to the desalted water tank, the pressure of the desalted water flowing into the desalted water heater is ensured to be less than 1.1MPa, the whole plant is prevented from jumping due to tripping of a safety valve of the desalted water heater, and the normal production of the system is ensured.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the control circuit of the present invention.
In the figure: the desalting water tank comprises a desalting water tank 1, a desalting water pump 2, a heating desalting water pipe 3, a normal-temperature desalting water pipe 4, a desalting water heater 5, a return pipe 6, an adjusting valve 7, a pressure gauge 8, a safety valve 9, a controller 10 and a stop valve 11.
The specific implementation mode is as follows:
as shown in fig. 1 and 2, a desalination pressure stabilizing system comprises a desalination water tank 1, a desalination water pump 2 is installed in the desalination water tank 1, a desalination water outlet of the desalination water pump 2 is respectively connected with a heating desalination water pipe 3 and a normal temperature desalination water pipe 4, the heating desalination water pipe 3 is connected with a water inlet of a desalination water heater 5, the heating desalination water pipe 3 is connected with a return port of the desalination water tank 1 through a return pipe 6, a regulating valve 7 and a stop valve 11 are installed on the return pipe 6, and a pressure gauge 8 is installed on the heating desalination water pipe 3 between the desalination water pump 2 and the return pipe 6; a safety valve 9 is arranged at the water inlet of the desalted water heater 5, and the outlet of the safety valve 9 is connected with the return port of the desalted water tank 1;
the pressure gauge 8 is electrically connected with a signal input end of the controller 10, and the regulating valve 7 is electrically connected with a signal output end of the controller 10;
in use, the desalted water pump 2 sends the desalted water in the desalted water tank 1 to the heating desalted water pipe 3 and the normal temperature desalted water pipe 4, the normal temperature desalted water pipe 4 directly sends the desalted water to a production system needing no heating, the desalted water in the heating desalted water pipe 3 is sent to the desalted water heater 5 for heating, the pressure gauge 8 is used for detecting the pressure of the desalted water in the heating desalted water pipe 3 at the moment, the measured data is transmitted to the controller 10, and the controller 10 controls the regulating valve 7 to regulate the opening.
Taking the safety valve 9 as an example of normal use, when the pressure gauge 8 detects that the pressure of the desalted water in the heating desalted water pipe 3 is less than 1.1MPa, the regulating valve 7 is in a closed state, and the system operates normally; when the pressure gauge 8 detects that the pressure of the desalted water in the heating desalted water pipe 3 is greater than or equal to 1.1MPa, the opening degree is adjusted by the adjusting valve 7 according to the amount of the desalted water greater than 1.1MPa, so that part of desalted water flows back to the pipe through the desalted water and flows back to the desalted water tank 1, the pressure of the desalted water flowing into the desalted water heater 5 is ensured to be less than 1.1MPa, the whole plant trip caused by the tripping of the safety valve of the desalted water heater 5 is avoided, and the normal production of the system is ensured.
When the maintenance or the test run is performed, the return pipe 6 can be blocked by the stop valve 11.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A desalted water pressure stabilizing system is characterized by comprising a desalted water tank, wherein a desalted water pump is installed in the desalted water tank, a desalted water outlet of the desalted water pump is respectively connected with a heating desalted water pipe and a normal-temperature desalted water pipe, the heating desalted water pipe is connected with a water inlet of a desalted water heater, the heating desalted water pipe is connected with a return port of the desalted water tank through a return pipe, an adjusting valve is installed on the return pipe, and a pressure gauge is installed on the heating desalted water pipe between the desalted water pump and the return pipe; a safety valve is arranged at a water inlet of the desalted water heater, and an outlet of the safety valve is connected with a return port of the desalted water tank;
the pressure gauge is electrically connected with a signal input end of the controller, and the regulating valve is electrically connected with a signal output end of the controller.
2. A desalinated water pressure stabilizing system according to claim 1, wherein a shut-off valve is mounted on said return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122215442.6U CN215831672U (en) | 2021-09-13 | 2021-09-13 | Desalted water pressure stabilizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122215442.6U CN215831672U (en) | 2021-09-13 | 2021-09-13 | Desalted water pressure stabilizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215831672U true CN215831672U (en) | 2022-02-15 |
Family
ID=80200592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122215442.6U Active CN215831672U (en) | 2021-09-13 | 2021-09-13 | Desalted water pressure stabilizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215831672U (en) |
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2021
- 2021-09-13 CN CN202122215442.6U patent/CN215831672U/en active Active
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