CN210602420U - Supercharging device of closed water circulation system - Google Patents
Supercharging device of closed water circulation system Download PDFInfo
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- CN210602420U CN210602420U CN201920883293.0U CN201920883293U CN210602420U CN 210602420 U CN210602420 U CN 210602420U CN 201920883293 U CN201920883293 U CN 201920883293U CN 210602420 U CN210602420 U CN 210602420U
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Abstract
The utility model relates to an airtight water circulating system supercharging device, it includes level pressure expansion drum, airtight water supplementing system and airtight water circulating system are all through first stop valve intercommunication level pressure expansion drum, pipeline intercommunication surge tank is passed through at the top of level pressure expansion drum, be equipped with the second stop valve on the pipeline, nitrogen gas supply line is connected to the surge tank, be equipped with the governing valve on the nitrogen gas supply line. The utility model discloses pass through pipeline intercommunication surge tank at the top of level pressure expansion tank, utilize the governing valve to adjust the nitrogen pressure that gets into, make the airtight water of nitrogen gas extrusion level pressure expansion tank lower part to reach the purpose that improves airtight water circulating system inlet pressure.
Description
Technical Field
The utility model relates to a metallurgical enterprise circulating water cooling field especially relates to an airtight water circulating system supercharging device.
Background
In the production process of metallurgical enterprises, a large amount of waste heat is generated, so that the running temperature of equipment is increased, and the stable running of the equipment is influenced. In order to ensure that the equipment works at a proper temperature, industrial water is generally adopted as a refrigerant carrier to transfer waste heat in the production process. The closed water circulation system is characterized in that industrial water is conveyed to each equipment through a circulating water pump to absorb heat and raise the temperature, then the temperature is lowered through a closed heat exchanger, the cooled industrial water is recycled to each equipment, and the whole industrial water circulation process is in a completely closed state.
For a closed water circulation system, in the practical application process, due to the reasons of insufficient pump lift or pipeline damage and the like, the water supply pressure of the system is often low, the cooling effect of equipment is poor, and the stable operation of the equipment is influenced. To this kind of condition, the utility model provides a supercharging device of airtight water circulating system.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a can improve airtight water circulating system supercharging device of airtight water circulating system inlet pressure reaches the purpose that improves airtight water circulating system pressure, has solved current airtight water circulating system because of the not enough problem that appears of water supply pressure.
The utility model provides a technical scheme that its technical problem adopted is: the closed water circulation system supercharging device comprises a constant-pressure expansion tank, a closed water supplementing system and a closed water circulation system, wherein the closed water supplementing system and the closed water circulation system are both communicated with the constant-pressure expansion tank through a first stop valve, the top of the constant-pressure expansion tank is communicated with a pressure stabilizing tank through a pipeline, a second stop valve is arranged on the pipeline, the pressure stabilizing tank is connected with a nitrogen supply pipeline, and a regulating valve is arranged on the nitrogen supply pipeline.
The utility model provides an in the preferred embodiment of airtight water circulating system supercharging device, from top to bottom set gradually in the level pressure expansion tank:
a water level sensor A, a high water level alarm point;
a water level sensor B, a high water level water supplementing stopping point;
a water level sensor C, a low water level water replenishing point I;
a water level sensor D, a low water level water replenishing point II;
the water level sensor A, the water level sensor B, the water level sensor C and the water level sensor D are in electric signal connection with a signal input port of the PLC, and a signal output end of the PLC is connected into a water feeding pump starting and stopping control circuit of the closed water supplementing system and used for controlling starting and stopping of a water feeding pump.
In a preferred embodiment of the pressurization device of the closed water circulation system, the closed water replenishing system supplies water to the pressure expansion tank by at least two water supply pumps connected in parallel.
In a preferred embodiment of the pressurization device of the closed water circulation system provided by the present invention, the top of the constant pressure expansion tank is further provided with an electric blow-off valve.
In a preferred embodiment of the pressurization device of the closed water circulation system provided by the present invention, the top of the constant pressure expansion tank is further provided with a safety valve.
Compared with the prior art, the utility model provides an airtight water circulating system supercharging device's beneficial effect is:
the top of the constant pressure expansion tank is communicated with the pressure stabilizing tank through a pipeline, and the pressure of the entering nitrogen is adjusted by the adjusting valve, so that the nitrogen extrudes the closed water at the lower part of the constant pressure expansion tank, thereby achieving the purpose of improving the inlet pressure of the closed water circulation system;
and secondly, the constant pressure expansion tank senses the water level through a plurality of water level sensors, and a PLC controller controls a water feeding pump of the closed water supplementing system to automatically supplement water, so that the running reliability of the device is enhanced.
And thirdly, the electric bleeding valve and the safety valve are designed in the constant-pressure expansion tank, and the double-pressure-relief system can ensure the safe operation of the constant-pressure expansion tank.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a supercharging device of a closed water circulation system provided by the present invention;
fig. 2 is the utility model provides a start of feed pump of airtight water moisturizing system opens and stops control circuit schematic diagram.
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 efforts belong to the protection scope of the present invention.
Referring to fig. 1, the supercharging device 1 of the closed water circulation system includes a constant pressure expansion tank 11, a closed water replenishing system 12 and a closed water circulation system 13, the closed water replenishing system 12 and the closed water circulation system 13 are both communicated with the constant pressure expansion tank 11 through a first stop valve 14, the top of the constant pressure expansion tank 11 is communicated with a pressure stabilizing tank 15 through a pipeline, a second stop valve 16 is arranged on the pipeline, the pressure stabilizing tank 15 is connected with a nitrogen gas supply pipeline 17, and the nitrogen gas supply pipeline 17 is provided with an adjusting valve 18 for adjusting the pressure of nitrogen gas in the pressure stabilizing tank 15.
In specific implementation, nitrogen is filled into the pressure stabilizing tank 15 to increase the pressure of the pressure stabilizing tank 15, the pressure stabilizing tank 15 is communicated with the constant pressure expansion valve 11, and the closed water at the lower part of the constant pressure expansion tank 11 is extruded by the nitrogen in the pressure stabilizing tank 15 to make the pressure of the closed water be the same as that of the nitrogen, in the embodiment, the pressure of the closed water and the pressure of the nitrogen are seen by pressure gauges (not shown in the figure) arranged on the pressure stabilizing tank 15 and the closed water replenishing system 12, so that the purpose of increasing the inlet pressure of the closed water circulation system is achieved, and the problem that the existing closed water circulation system is insufficient in water supply pressure is solved.
In this embodiment, as a further step, the constant pressure expansion tank 11 is provided with:
a water level sensor A, a high water level alarm point;
a water level sensor B, a high water level water supplementing stopping point;
a water level sensor C, a low water level water replenishing point I;
a water level sensor D, a low water level water replenishing point II;
the water level sensor A, the water level sensor B, the water level sensor C and the water level sensor D are all in electric signal connection with a signal input port of the PLC controller 20, and a signal output end of the PLC controller 20 is connected to a water feeding pump 122 start-stop control circuit of the closed water replenishing system 12 and used for controlling start-stop of the water feeding pump 122.
In this embodiment, the closed water replenishing system 12 is supplied with water to the pressure expansion tank by at least two feed water pumps 122 connected in parallel.
The control method of the PLC controller 20 in this embodiment is as follows:
when the water level in the constant-pressure expansion tank 11 reaches the water level sensor C, the PLC controller 20 controls a water feed pump 122 to replenish water to the constant-pressure expansion tank 11;
when the water level in the constant-pressure expansion tank 11 reaches the water level sensor B, the PLC controller 20 controls the water feed pump 122 to stop supplying water;
when the water level of the constant-pressure expansion tank 11 reaches the water level sensor D, the PLC 20 controls the two water feeding pumps 122 to replenish water to the constant-pressure expansion tank 11;
when the water level in the constant-pressure expansion tank 11 reaches the water level sensor a, the PLC controller 20 issues a high water level alarm.
In this embodiment, the connection mode between the PLC controller 20 and each water level sensor is the prior art, and the connection can be performed according to the specification of the water level sensor, and please refer to fig. 2 for a specific control circuit for controlling the water feed pump 122 by the PLC controller 20, a switching value output module of the PLC controller 20 is electrically connected to a relay KA1 in a start/stop control circuit of the water feed pump, when the PLC controller 20 provides a start signal, the relay KA1 is closed, the contactor KM1 is powered, and the water feed pump 122 is started.
In this embodiment, the top of the constant pressure expansion tank 11 is further provided with an electric bleeding valve 19, when the pressure in the constant pressure expansion tank 11 exceeds the upper limit of the set value, the electric bleeding valve 19 is opened to perform bleeding and pressure relief, and when the pressure in the constant pressure expansion tank 11 is lower than the set value, the electric bleeding valve 19 is closed.
In this embodiment, a safety valve 21 is further disposed at the top of the constant-pressure expansion tank 11, when the pressure in the constant-pressure expansion tank 11 exceeds the set jump pressure of the safety valve 21, the safety valve 21 is automatically opened, and when the pressure in the constant-pressure expansion tank 11 is lower than the set closing pressure of the safety valve 21, the safety valve 21 is automatically closed, and a double pressure relief system is adopted, so that safe operation of the constant-pressure expansion tank can be ensured.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (5)
1. The closed water circulation system supercharging device comprises a constant-pressure expansion tank, a closed water supplementing system and a closed water circulation system, wherein the closed water supplementing system and the closed water circulation system are communicated with the constant-pressure expansion tank through a first stop valve, and the closed water circulation system supercharging device is characterized in that: the top of the constant pressure expansion tank is communicated with the pressure stabilizing tank through a pipeline, a second stop valve is arranged on the pipeline, the pressure stabilizing tank is connected with a nitrogen supply pipeline, and a regulating valve is arranged on the nitrogen supply pipeline.
2. The closed water circulation system supercharging device according to claim 1, wherein: the constant pressure expansion tank is internally provided with the following components from top to bottom in sequence:
a water level sensor A, a high water level alarm point;
a water level sensor B, a high water level water supplementing stopping point;
a water level sensor C, a low water level water replenishing point I;
a water level sensor D, a low water level water replenishing point II;
the water level sensor A, the water level sensor B, the water level sensor C and the water level sensor D are in electric signal connection with a signal input port of the PLC, and a signal output end of the PLC is connected into a water feeding pump starting and stopping control circuit of the closed water supplementing system and used for controlling starting and stopping of a water feeding pump.
3. The closed water circulation system supercharging device according to claim 2, wherein: the closed water replenishing system supplies water to the pressure-setting expansion tank by at least two water-feeding pumps connected in parallel.
4. The closed water circulation system supercharging device according to claim 1, wherein: and the top of the constant-pressure expansion tank is also provided with an electric bleeding valve.
5. The closed water circulation system supercharging device according to claim 1, wherein: and the top of the constant-pressure expansion tank is also provided with a safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883293.0U CN210602420U (en) | 2019-06-12 | 2019-06-12 | Supercharging device of closed water circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920883293.0U CN210602420U (en) | 2019-06-12 | 2019-06-12 | Supercharging device of closed water circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210602420U true CN210602420U (en) | 2020-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920883293.0U Active CN210602420U (en) | 2019-06-12 | 2019-06-12 | Supercharging device of closed water circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210602420U (en) |
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2019
- 2019-06-12 CN CN201920883293.0U patent/CN210602420U/en active Active
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