CN217318520U - Device for recovering high, medium and low pressure grading energy by using drain valve - Google Patents
Device for recovering high, medium and low pressure grading energy by using drain valve Download PDFInfo
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- CN217318520U CN217318520U CN202221119328.1U CN202221119328U CN217318520U CN 217318520 U CN217318520 U CN 217318520U CN 202221119328 U CN202221119328 U CN 202221119328U CN 217318520 U CN217318520 U CN 217318520U
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Abstract
The utility model discloses a realize high-medium low pressure fractional energy's recovery unit with a trap, including the pit that is used for the blowdown, pit top be equipped with and evaporate the cauldron, the blowdown end and the pit intercommunication that evaporate the cauldron, other low pressure flash tank and the high-pressure flash tank of being equipped with respectively of evaporating the cauldron, the output of evaporating the cauldron and the input of low pressure flash tank between be equipped with the low pressure drain pipe that is used for carrying the low pressure water, the output of evaporating the cauldron and the input of high-pressure flash tank between be equipped with the high-pressure drain pipe that is used for carrying the high-pressure water. The utility model overcomes the lower problem of energy utilization in the traditional still kettle that exists among the prior art. The utility model has the advantages of high energy utilization rate, strong working stability, long service life and the like.
Description
Technical Field
The utility model relates to a drainage system field, more specifically say, relate to a realize high-middle-low pressure grading energy's recovery unit with a trap.
Background
The aerated concrete product has high requirement on water accumulation in the autoclave in the steam curing process of the autoclave, and no water accumulation at the bottom of the autoclave is required.
When the aerated concrete product begins to be steamed in the still kettle, the pressure is increased from vacuum, and the pressure gradually increases to constant pressure. The steam-pressing kettles of each production line of an air-entrapping production enterprise are more, different steam-pressing kettles can be in different working stages, some steam-pressing kettles do not work, some steam-pressing kettles are vacuumized, some steam-pressing kettles are in different boosting stages, and some steam-pressing kettles are at constant pressure and some steam-releasing kettles are in steam release. Therefore, some of the still kettles are not hydrophobic, some of the still kettles are hydrophobic, and the hydrophobic water temperatures of the hydrophobic kettles are different due to different pressures of the still kettles, wherein the water temperature is about 180 ℃ plus 190 ℃ higher and only 100 ℃ lower, and although the total heat is equal after the condensed water with different water temperatures is mixed, the comprehensive temperature of the condensed water is reduced, the grade is reduced, and the available energy is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the lower problem of energy utilization in the traditional cauldron that evaporates that exists among the prior art, provide now that one kind that has high energy utilization realizes the recovery unit of high-middle low pressure hierarchical energy with a trap.
The utility model discloses a realize recovery unit of high-medium low pressure classification energy with a trap, including the pit that is used for the blowdown, pit top be equipped with and evaporate the cauldron, the blow-off end and the pit intercommunication that evaporate the cauldron, other low pressure flash tank and the high-pressure flash tank of being equipped with respectively of evaporating the cauldron, the output of evaporating the cauldron and the input of low pressure flash tank between be equipped with the low pressure drain pipe that is used for carrying the low pressure water, the output of evaporating the cauldron and the input of high-pressure flash tank between be equipped with the high-pressure drain pipe that is used for carrying the high-pressure water.
Preferably, a drain port is arranged at the bottom of the still kettle, one end of the drain port is connected with a drain pipeline, a drain valve is arranged on the drain pipeline, the output end of the drain pipeline is positioned in the pit, the other end of the drain port is connected with a three-way pipeline, the first output end of the three-way pipeline is connected with a low-pressure drain pipe, and the second output end of the three-way pipeline is connected with a high-pressure drain pipe.
Preferably, the input end of the three-way pipeline is provided with a stop valve for controlling the flow of water in the three-way pipeline, the three-way pipeline on the right side of the stop valve is also provided with a filter for filtering the water in the three-way pipeline, and the three-way pipeline on the right side of the filter is provided with a steam trap for discharging high-pressure water in the three-way pipeline.
Preferably, a low-pressure check valve for preventing the backflow of the low-pressure water body is arranged on the first output end of the three-way pipeline, and a high-pressure check valve for preventing the backflow of the high-pressure water body is arranged on the second output end of the three-way pipeline.
Preferably, a low-pressure drainage automatic valve used for controlling the flow of low-pressure water in the low-pressure drainage pipe is arranged on the right side of the low-pressure check valve, a still kettle sensor is arranged at the upper end of the still kettle, a controller is arranged between the still kettle sensor and the low-pressure drainage automatic valve, the signal output end of the still kettle sensor is electrically connected with the input end of the controller, and the signal output end of the controller is electrically connected with the signal receiving end of the low-pressure drainage automatic valve.
Preferably, a low-pressure drainage main pipe is arranged on the low-pressure drainage pipe between the low-pressure drainage automatic valve and the low-pressure flash tank.
Preferably, a high-pressure drain main pipe is arranged on the high-pressure drain pipe between the high-pressure check valve and the high-pressure flash tank.
Preferably, a low-grade heat process is arranged beside the low-pressure flash tank, an exhaust port at the upper end of the low-pressure flash tank is connected with a gas input end pipeline of the low-grade heat process, a liquid discharge port at the lower end of the low-pressure flash tank is connected with a liquid input end pipeline of the low-grade heat process, and a low-pressure steam trap is arranged on a pipeline between the liquid discharge port at the lower end of the low-pressure flash tank and the liquid input end of the low-grade heat process.
Preferably, a high-grade heat process is arranged beside the high-pressure flash tank, an exhaust port at the upper end of the high-pressure flash tank is connected with a gas input end pipeline of the high-grade heat process, and a high-pressure steam trap is arranged on a pipeline between a liquid outlet at the lower end of the high-pressure flash tank and a liquid input end of the low-grade heat process.
A large-displacement drain valve is installed at each drainage point of the still kettle, a tee joint is connected to the outlet of the drain valve, one way of the drain valve is connected with high-pressure drain and is connected with a high-pressure pipe system through a high-pressure check valve, the outlet pipe system of the high-pressure check valve is connected with a high-pressure pipe, the high-pressure pipe assemblies of different still kettles are connected to a high-pressure flash tank, and steam generated by the high-pressure flash tank is used for a high-grade heat utilization process.
The other path of the three-way outlet of the drain valve is provided with a low-pressure check valve, the outlet of the low-pressure check valve is provided with an automatic drain valve, a sensor of the still kettle outputs a signal to a controller, the automatic drain valve is automatically controlled through a control signal, when the pressure temperature of the still kettle is low, the temperature of condensed water of the still kettle is also low, the signal of the sensor of the still kettle is transmitted to the controller, the low-pressure automatic drain valve is automatically opened through the controller, after the low-pressure drain valve is opened, the condensed water automatically flows to a low-pressure condensed water pipe system due to the high pressure of a high-pressure drainage pipe system, the high-pressure check valve is automatically closed, the condensed water is converged into a main pipe to be connected to the low-pressure flash tank, and flash steam generated by the low-pressure flash tank is used for the low-grade heat utilization process.
And the condensed water discharged by the high-pressure flash tank and the condensed water discharged by the low-pressure flash tank are converged and then used in the low-grade heat utilization process.
According to the principle, more than three pipelines can be arranged behind the drain valve, and the energy of draining back in three paths is divided into three paths, namely high, medium and low, so that a draining energy grading recovery system is realized.
The working principle is as follows: when the aerated concrete product starts to be steamed and cured in the still kettle, the pressure is increased from vacuum, the pressure is gradually increased, no water is drained in a vacuum state, when the pressure in the still kettle rises to a positive pressure certain value, a sensor of the still kettle transmits a signal to a controller, the controller outputs a control signal to open a low-pressure automatic drain valve for draining, condensed water of the still kettle passes through a stop valve, a filter, a drain valve, a tee joint, a low-pressure check valve, a low-pressure automatic drain valve and a low-pressure drain pipe, a low-pressure drain header pipe discharges to a low-pressure flash tank, steam at the outlet of the low-pressure flash tank is used for heating a low-grade technological process, and the condensed water of the low-pressure flash tank is drained through a low-pressure flash drainage system for heating the low-grade technological process. When the low-pressure automatic drain valve is opened, the high-pressure drain of other autoclaves is in a working state, and the low-pressure check valve is automatically closed due to high pressure, so that the high-pressure drain cannot flow back.
When the pressure and the temperature of the still kettle rise to a set value, and the pressure in the still kettle is greater than the pressure of a high-pressure flash tank, the sensor of the still kettle outputs a signal to a controller, the controller outputs a control signal to close a low-pressure automatic drain valve, condensed water of the still kettle enters a high-pressure drain pipe through a drain port, a stop valve, a filter, a drain valve, a tee joint and a high-pressure check valve, the high-pressure drain pipes of different still kettles are converged into a high-pressure drain main pipe, the condensed water with high pressure and high temperature enters a high-pressure flash tank through the high-pressure drain main pipe, steam at the outlet of the high-pressure flash tank is used for heating a high-grade heating process, and the condensed water of the high-pressure flash tank is used for heating a low-grade heating process through a high-pressure flash drainage system.
Therefore, each still kettle realizes high-medium-low pressure drainage by using a drain valve, an energy grading recovery system is realized, the energy grade of recovered condensed water is improved, and the total recovered energy is increased.
The utility model discloses following beneficial effect has: high energy utilization rate, strong working stability and long service life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The system comprises a pit 1, an autoclave 2, a low-pressure flash tank 3, a high-pressure flash tank 4, a low-pressure drain pipe 5, a high-pressure drain pipe 6, a drain port 7, a sewage discharge pipeline 8, a sewage discharge valve 9, a three-way pipeline 10, a stop valve 11, a filter 12, a steam trap 13, a low-pressure check valve 14, a high-pressure check valve 15, a low-pressure automatic drain valve 16, an autoclave sensor 17, a controller 18, a low-pressure main drain pipe 19, a high-pressure main drain pipe 20, a low-grade heat utilization process 21, a low-pressure steam trap 22, a high-grade heat utilization process 23 and a high-pressure steam trap 24.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Example (b): the device for recycling high, medium and low pressure grading energy by using a drain valve comprises a pit 1 for discharging sewage, wherein an autoclave 2 is arranged above the pit 1, a sewage discharge end of the autoclave 2 is communicated with the pit 1, a low-pressure flash tank 3 and a high-pressure flash tank 4 are respectively arranged beside the autoclave 2, a low-pressure drain pipe 5 for conveying low-pressure water is arranged between an output end of the autoclave 2 and an input end of the low-pressure flash tank 3, and a high-pressure drain pipe 6 for conveying high-pressure water is arranged between an output end of the autoclave 2 and an input end of the high-pressure flash tank 4.
The bottom of the still kettle 2 is provided with a drain opening 7, one end of the drain opening 7 is connected with a drain pipeline 8, the drain pipeline 8 is provided with a drain valve 9, the output end of the drain pipeline 8 is positioned in the pit 1, the other end of the drain opening 7 is connected with a three-way pipeline 10, the first output end of the three-way pipeline 10 is connected with the low-pressure drain pipe 5, and the second output end of the three-way pipeline 10 is connected with the high-pressure drain pipe 6.
The input end of the three-way pipeline 10 is provided with a shut-off valve 11 for controlling the flow of water in the three-way pipeline 10, the three-way pipeline 10 on the right side of the shut-off valve 11 is also provided with a filter 12 for filtering the water in the three-way pipeline 10, and the three-way pipeline 10 on the right side of the filter 12 is provided with a steam trap 13 for discharging high-pressure water in the three-way pipeline 10.
The three-way pipe 10 is characterized in that a low-pressure check valve 14 for preventing the backflow of low-pressure water is arranged at the first output end of the three-way pipe 10, and a high-pressure check valve 15 for preventing the backflow of high-pressure water is arranged at the second output end of the three-way pipe 10.
The low-pressure drainage pipe 5 positioned on the right side of the low-pressure check valve 14 is provided with a low-pressure drainage automatic valve 16 used for controlling the flow of low-pressure water in the low-pressure drainage pipe 5, the upper end of the still kettle 2 is provided with a still kettle sensor 17, a controller 18 is arranged between the still kettle sensor 17 and the low-pressure drainage automatic valve 16, the signal output end of the still kettle sensor 17 is electrically connected with the input end of the controller 18, and the signal output end of the controller 18 is electrically connected with the signal receiving end of the low-pressure drainage automatic valve 16.
The low-pressure drain pipe 5 between the low-pressure drain automatic valve 16 and the low-pressure flash tank 3 is provided with a low-pressure drain header pipe 19.
A high-pressure drain main pipe 20 is arranged on the high-pressure drain pipe 6 between the high-pressure check valve 15 and the high-pressure flash tank 4.
A low-grade heat utilization process 21 is arranged beside the low-pressure flash tank 3, an exhaust port at the upper end of the low-pressure flash tank 3 is connected with a gas input end pipeline of the low-grade heat utilization process 21, a liquid discharge port at the lower end of the low-pressure flash tank 3 is connected with a liquid input end pipeline of the low-grade heat utilization process 21, and a low-pressure steam trap 22 is arranged on a pipeline between the liquid discharge port at the lower end of the low-pressure flash tank 3 and the liquid input end of the low-grade heat utilization process 21.
A high-grade heat process 23 is arranged beside the high-pressure flash tank 4, an exhaust port at the upper end of the high-pressure flash tank 4 is connected with a gas input end pipeline of the high-grade heat process 23, and a high-pressure steam trap 24 is arranged on a pipeline between a liquid discharge port at the lower end of the high-pressure flash tank 4 and a liquid input end of the low-grade heat process 21.
The above description is only for the specific embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.
Claims (9)
1. The utility model provides a realize high-medium low pressure grading energy's recovery unit with a trap, is including pit (1) that is used for the blowdown, characterized by, pit (1) top be equipped with and evaporate cauldron (2), the blowdown end and pit (1) intercommunication of evaporating cauldron (2), still cauldron (2) other be equipped with low pressure flash tank (3) and high-pressure flash tank (4) respectively, the output of evaporating cauldron (2) and the input of low pressure flash tank (3) between be equipped with low pressure drain pipe (5) that are used for carrying the low pressure water body, the output of evaporating cauldron (2) and the input of high-pressure flash tank (4) between be equipped with high-pressure drain pipe (6) that are used for carrying the high pressure water body.
2. The device for recycling high, medium and low pressure classification energy by using a drain valve as claimed in claim 1, wherein a drain opening (7) is arranged at the bottom of the still kettle (2), one end of the drain opening (7) is connected with a sewage pipeline (8), a sewage valve (9) is arranged on the sewage pipeline (8), the output end of the sewage pipeline (8) is positioned in the pit (1), the other end of the drain opening (7) is connected with a three-way pipeline (10), one output end of the three-way pipeline (10) is connected with the low pressure drain pipe (5), and the second output end of the three-way pipeline (10) is connected with the high pressure drain pipe (6).
3. The device for recovering high, medium and low pressure grading energy by using a drain valve according to claim 2, characterized in that the input end of the three-way pipe (10) is provided with a stop valve (11) for controlling the flow of water in the three-way pipe (10), the three-way pipe (10) on the right side of the stop valve (11) is further provided with a filter (12) for filtering the water in the three-way pipe (10), and the three-way pipe (10) on the right side of the filter (12) is provided with a drain (13) for discharging high pressure water in the three-way pipe (10).
4. The device for recovering high, medium and low pressure classified energy by using a drain valve as claimed in claim 2, wherein a low pressure check valve (14) for preventing the backflow of low pressure water is provided on the first output end of the three-way pipe (10), and a high pressure check valve (15) for preventing the backflow of high pressure water is provided on the second output end of the three-way pipe (10).
5. The device for recycling high, medium and low pressure classified energy by using one drain valve according to claim 4, wherein a low pressure drain pipe (5) positioned at the right side of the low pressure check valve (14) is provided with a low pressure drain automatic valve (16) for controlling the flow rate of low pressure water in the low pressure drain pipe (5), the upper end of the still kettle (2) is provided with a still kettle sensor (17), a controller (18) is arranged between the still kettle sensor (17) and the low pressure drain automatic valve (16), the signal output end of the still kettle sensor (17) is electrically connected with the input end of the controller (18), and the signal output end of the controller (18) is electrically connected with the signal receiving end of the low pressure drain automatic valve (16).
6. A device for the recovery of high, medium and low pressure classified energy with a trap according to claim 5, characterized in that the low pressure trap (5) located between the low pressure automatic drain valve (16) and the low pressure flash tank (3) is provided with a low pressure drain manifold (19).
7. A device for the recovery of high, medium and low pressure classified energy with a trap according to claim 4, characterized by the high pressure drain (20) provided in the high pressure trap (6) between the high pressure check valve (15) and the high pressure flash tank (4).
8. The recovery device for high, medium and low pressure classification energy by a steam trap as claimed in claim 1, wherein the low pressure flash tank (3) is provided with a low grade heat process (21) beside, an exhaust port at the upper end of the low pressure flash tank (3) is connected with a gas input end pipeline of the low grade heat process (21), a liquid outlet at the lower end of the low pressure flash tank (3) is connected with a liquid input end pipeline of the low grade heat process (21), and a low pressure steam trap (22) is provided on a pipeline between the liquid outlet at the lower end of the low pressure flash tank (3) and the liquid input end of the low grade heat process (21).
9. The device for recovering high, medium and low pressure classified energy by using a steam trap as claimed in claim 8, wherein a high grade heat utilization process (23) is provided beside the high pressure flash tank (4), an exhaust port at the upper end of the high pressure flash tank (4) is connected with a gas input end pipeline of the high grade heat utilization process (23), a liquid discharge port at the lower end of the high pressure flash tank (4) is connected with a liquid input end pipeline of the high grade heat utilization process (23), and a high pressure steam trap (24) is provided on a pipeline between the liquid discharge port at the lower end of the high pressure flash tank (4) and the liquid input end of the low grade heat utilization process (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221119328.1U CN217318520U (en) | 2022-05-11 | 2022-05-11 | Device for recovering high, medium and low pressure grading energy by using drain valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221119328.1U CN217318520U (en) | 2022-05-11 | 2022-05-11 | Device for recovering high, medium and low pressure grading energy by using drain valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217318520U true CN217318520U (en) | 2022-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221119328.1U Active CN217318520U (en) | 2022-05-11 | 2022-05-11 | Device for recovering high, medium and low pressure grading energy by using drain valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217318520U (en) |
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2022
- 2022-05-11 CN CN202221119328.1U patent/CN217318520U/en active Active
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