CN213803044U - Online diagnostic device of power plant milipore filter integrality - Google Patents
Online diagnostic device of power plant milipore filter integrality Download PDFInfo
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- CN213803044U CN213803044U CN202022728959.0U CN202022728959U CN213803044U CN 213803044 U CN213803044 U CN 213803044U CN 202022728959 U CN202022728959 U CN 202022728959U CN 213803044 U CN213803044 U CN 213803044U
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Abstract
An on-line diagnosis device for the integrity of an ultrafiltration membrane of a power plant comprises an ultrafiltration membrane device unit, an integrity detection unit and a control unit; the ultrafiltration membrane device unit comprises an ultrafiltration membrane component, a water inlet valve of an ultrafiltration system is connected with an inlet of the ultrafiltration membrane component and a lower discharge valve of the ultrafiltration system, an outlet of the ultrafiltration membrane component is divided into two paths, one path is connected with a manual valve for producing water of the ultrafiltration system, and the other path is connected with an upper discharge valve of the ultrafiltration system; the integrity detection unit comprises an ultrafiltration air inlet valve manual isolation valve, the outlet of the ultrafiltration air inlet valve manual isolation valve is divided into two paths, one path is connected with an ultrafiltration membrane component air inlet valve group through the ultrafiltration air inlet valve, and the other path is connected with an ultrafiltration membrane component inlet. The utility model discloses can guarantee the stability of quality of water effectively, improve unit operation economy, security, reduce because of the use of milipore filter equipment, especially the influence that the process back equipment of continuous water backwash air washing is ageing or equipment damages and causes, improve the discovery and the diagnosis of trouble problem, reduce hysteresis quality and randomness.
Description
Technical Field
The utility model belongs to the technical field of mechanical engineering, concretely relates to power plant milipore filter integrality online diagnosis device.
Background
In the boiler water supply system of power plant, ultrafiltration membrane system plays the effect of getting rid of impurity such as aquatic suspended solid, macromolecule organic matter and colloid as the indispensable equipment of preparation demineralized water, because follow-up equipment is mostly reverse osmosis membrane device in the power plant, reverse osmosis membrane device plays the desalination to ultrafiltration play water, and the normal milipore filter system of operation produces water effect fabulous, can not influence the safe operation of follow-up water preparation equipment. However, with the use of ultrafiltration membrane equipment, especially in the continuous water backwashing gas washing process, membrane filaments in the equipment can be broken under stress after aging or abnormal operation along with time, and when the breakage of the ultrafiltration membrane filaments is excessive, the water production failure can cause irreversible damage to a reverse osmosis membrane. In the prior art, only after a field person finds an abnormality, a professional is informed to carry out integrity check on the ultrafiltration membrane filaments, and then whether the abnormal condition exists is judged. When the integrity of the ultrafiltration membrane filaments is insufficient, the method cannot find and diagnose in time, and has great hysteresis and randomness, so that hidden dangers exist in the safe and economic operation of a boiler feedwater system.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome the above-mentioned problem that exists among the prior art, the purpose provides a power plant milipore filter integrality online diagnosis device, and it has advantages such as simple structure, maintenance convenience, reaction sensitivity.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
an on-line diagnosis device for the integrity of an ultrafiltration membrane of a power plant comprises an ultrafiltration membrane device unit, an integrity detection unit and a control unit;
the ultrafiltration membrane device unit comprises an ultrafiltration membrane component, an ultrafiltration system water inlet valve, an ultrafiltration system lower discharge valve, an ultrafiltration system upper discharge valve and an ultrafiltration system water production manual valve; the water inlet valve of the ultrafiltration system is connected with a connecting frame pipeline, the connecting frame pipeline is connected with an inlet of the ultrafiltration membrane component and a lower discharge valve of the ultrafiltration system, an outlet of the ultrafiltration membrane component is divided into two paths, one path is connected with a manual valve for producing water of the ultrafiltration system, and the other path is connected with an upper discharge valve of the ultrafiltration system;
the integrity detection unit comprises an ultrafiltration air inlet valve manual isolation valve, an ultrafiltration air inlet valve, a detection air inlet valve, an air storage pressure buffer tank, a detection air outlet valve and an ultrafiltration membrane component air inlet valve group; wherein, the outlet of the manual isolating valve of the ultrafiltration air inlet valve is divided into two paths, one path is connected with the air inlet valve bank of the ultrafiltration membrane component through the ultrafiltration air inlet valve, and the other path is connected with the air inlet valve bank of the ultrafiltration membrane component through the detection air inlet valve, the air storage pressure buffer tank and the detection air outlet valve; the inlet valve group of the ultrafiltration membrane component is connected with the inlet of the ultrafiltration membrane component;
the control unit comprises a DCS component, a pressure sensor and an ultrafiltration membrane component sensitive pressure sensor group; wherein, the pressure sensor and the sensitive pressure sensor group of the ultrafiltration membrane component are both connected with the DCS component; the pressure sensor is arranged on the gas storage pressure buffer tank, and the ultrafiltration membrane component sensitive pressure sensor group is arranged at the inlet of the ultrafiltration membrane component.
The utility model discloses a further improvement lies in, ultrafiltration system water intaking valve connection has the ultrafiltration feed pump.
The utility model discloses further improvement lies in, the manual valve of ultrafiltration system production water still is connected with ultrafiltration system and produces the water valve, and ultrafiltration system produces the water valve and is connected with ultrafiltration system and produces the water check valve.
The utility model discloses a further improvement lies in, the last row of valve of ultrafiltration system links to each other with the recovery ditch.
The utility model discloses a further improvement lies in, ultrafiltration admission valve entry linkage has the manual isolating valve of ultrafiltration admission valve.
The utility model discloses further improvement lies in, and the check valve that admits air through the ultrafiltration intake valve through the ultrafiltration links to each other with milipore filter subassembly valve bank of admitting air.
The utility model discloses a further improvement lies in, detects out that the pneumatic valve links to each other with ultrafiltration membrane module inlet valve group through the check valve that gives vent to anger.
The utility model discloses a further improvement lies in, and milipore filter subassembly valve unit that admits air is through milipore filter subassembly contrary valves that ends that admits air and is continuous with milipore filter subassembly entry.
Compared with the prior art, the utility model discloses the beneficial effect who has:
the utility model discloses a set up integrality detecting element and the control unit, through monitoring milipore filter subassembly pressure sensor group's pressure drop, obtain milipore filter subassembly integrality value, can regularly carry out gas tightness integrality to milipore filter device unit and detect. The utility model discloses can guarantee the stability of quality of water effectively, improve unit operation economy, security and intelligent, reduce because of the use of milipore filter equipment, especially the influence that the process back equipment that is washed at continuous water backwash gas is ageing or equipment damages and cause, improve the discovery and the diagnosis of trouble problem, reduce hysteresis quality and randomness, be a safe and reliable's online diagnostic device of power plant milipore filter integrality.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a logic control diagram of backwash, water production and integrity check.
FIG. 3 is a schematic diagram of the logic control of the present invention; wherein, (a) is the control flow chart of the utility model, and (b) is the depth test flow chart.
In the figure, 1 is an ultrafiltration membrane device unit, 2 is an integrity detection unit, 3 is a control unit, 4 is an ultrafiltration membrane component, 5 is a water inlet valve of an ultrafiltration system, 6 is a lower discharge valve of the ultrafiltration system, 7 is an upper discharge valve of the ultrafiltration system, 8 is a water production valve of the ultrafiltration system, 9 is a manual water production valve of the ultrafiltration system, 10 is a water production check valve of the ultrafiltration system, 11 is an ultrafiltration water feed pump, 12 is a recovery water ditch, 13 is an ultrafiltration air inlet valve, 14 is a manual isolation valve of the ultrafiltration air inlet valve, 15 is an ultrafiltration air inlet check valve, 16 is a detection air inlet valve, 17 is an air storage pressure buffer tank, 18 is a detection air outlet valve, 19 is an air outlet check valve, 20 is an inlet valve bank of the ultrafiltration membrane component, 21 is an inlet check valve bank of the ultrafiltration membrane component, 22 is a pressure sensor, and 23 is a pressure sensor bank of the ultrafiltration membrane component.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the on-line diagnosis device for the integrity of the ultrafiltration membrane in the power plant comprises an ultrafiltration membrane device unit 1, an integrity detection unit 2 and a control unit 3.
The ultrafiltration membrane device unit 1 comprises an ultrafiltration membrane component 4, an ultrafiltration system water inlet valve 5, an ultrafiltration system lower discharge valve 6, an ultrafiltration system upper discharge valve 7, an ultrafiltration system water production valve 8, an ultrafiltration system water production manual valve 9, an ultrafiltration system water production check valve 10, an ultrafiltration water feed pump 11 and corresponding matched equipment, including but not limited to a connecting frame, a pipeline, a gasket, a recovery ditch 12 and the like.
The ultrafiltration membrane component 4 is connected with an ultrafiltration system water inlet valve 5, an ultrafiltration system lower discharge valve 6, an ultrafiltration system upper discharge valve 7, an ultrafiltration system water production valve 8, an ultrafiltration system water production manual valve 9, an ultrafiltration system water production check valve 10 and an ultrafiltration water feed pump 11 through a connecting frame pipeline, the connection mode can be welding or flange connection, in the monitoring process, consumed wastewater is discharged to a recovery ditch 12, and recovery is carried out through comprehensive utilization of water resources.
Specifically, an ultrafiltration feed pump 11 is connected with an ultrafiltration system water inlet valve 5, the ultrafiltration system water inlet valve 5 is connected with a connecting frame pipeline, the connecting frame pipeline is connected with an inlet of an ultrafiltration membrane component 4 and a lower discharge valve 6 of an ultrafiltration system, an outlet of the ultrafiltration membrane component 4 is divided into two paths, and one path is connected with a water production check valve 10 of the ultrafiltration system through a water production manual valve 9 of the ultrafiltration system and a water production valve 8 of the ultrafiltration system. The other path is connected with a recovery ditch 12 through an upper discharge valve 7 of the ultrafiltration system.
The integrity detection unit 2 comprises an ultrafiltration air inlet valve manual isolation valve 14, an ultrafiltration air inlet valve 13, an ultrafiltration air inlet check valve 15, a detection air inlet valve 16, an air storage pressure buffer tank 17, a detection air valve 18, an air outlet check valve 19, an ultrafiltration membrane component air inlet valve group 20, an ultrafiltration membrane component air inlet check valve group 21 and corresponding matched equipment, including but not limited to a connecting frame, a pipeline, a gasket and the like. The connection means may be welding or flange connection.
Specifically, the outlet of the manual isolation valve 14 of the ultrafiltration air inlet valve is divided into two paths, one path is connected with an inlet valve bank 20 of the ultrafiltration membrane component through an ultrafiltration air inlet valve 13 and an ultrafiltration air inlet check valve 15, and the other path is connected with the inlet valve bank 20 of the ultrafiltration membrane component through a detection air inlet valve 16, an air storage pressure buffer tank 17, a detection air valve 18 and an air outlet check valve 19; the ultrafiltration membrane component air inlet valve group 20 is connected with the inlet of the ultrafiltration membrane component 4 through an ultrafiltration membrane component air inlet check valve group.
In the monitoring process, the air tightness integrity of the ultrafiltration membrane device unit 1 is detected periodically, and the gas consumed in the detection is discharged to the external atmospheric environment through the lower discharge valve 6 of the ultrafiltration system.
The control unit 3 comprises a DCS component, a pneumatic/electric valve matching component, a gas storage pressure buffer tank sensitive pressure sensor 22, an ultrafiltration membrane component sensitive pressure sensor group 23 and corresponding logic relations, wherein the DCS component, the pneumatic/electric valve matching component, the gas storage pressure buffer tank sensitive pressure sensor group 23 and the corresponding logic relations are included for realizing corresponding functions.
Specifically, the gas storage pressure buffer tank sensitive pressure sensor 22 is arranged on the gas storage pressure buffer tank 17, and the ultrafiltration membrane component sensitive pressure sensor group 23 is arranged at the inlet of the ultrafiltration membrane component. The pressure sensor 22 and the ultrafiltration membrane module sensitive pressure sensor group 23 are both connected with the DCS module.
The manual valve 9 for producing water is determined to be in an open state by manual forcing or automatic regular time setting execution, referring to fig. 2, the procedure firstly executes a water making procedure, firstly opens the ultrafiltration upper discharge valve 7 and then opens the ultrafiltration water inlet valve 5, opens the ultrafiltration water producing valve 8 after waiting for 1min, then closes the ultrafiltration upper discharge valve 7, enters a normal water making state, stops the ultrafiltration water feeding pump 11, closes the water producing valve 8 and the water inlet valve 5 after an operator issues a manual forced detection command, executes an integrity check procedure, and stops the operator after the execution is finished; and when the set period is reached, the program automatically waits for the ultrafiltration water production program to finish, before the backwashing program starts or when the ultrafiltration reinforced backwashing condition is reached, the program waits for the reinforcement acid-base backwashing to finish, executes the integrity check program, and stops the machine after the completion of the execution to wait for the instruction of an operator.
Referring to fig. 3 (a), the shutdown integrity check can be performed through the operation of the upper computer of the operator, or after the water preparation is finished and before the backwash program is run, the isolation manual door 14 is firstly operated and confirmed to be in an open state, the ultrafiltration lower discharge valve 6 is opened, the water is discharged for 10min, then the ultrafiltration lower discharge valve 6 is closed, the ultrafiltration backwash air inlet valve 13 is closed, the ultrafiltration upper discharge valve 7 is opened, the detection air inlet valve 16 of the integrity detection unit is opened, when the pressure sensor 22 detects that the pressure in the air storage pressure buffer tank 17 reaches 0.10MPa, the pressure in the module is kept for 2min by adjusting the detection air valve 18, the ultrafiltration membrane module pressure sensor group 23 automatically maintains the pressure in the ultrafiltration membrane module air inlet valve group 20 at 0.10MPa, when the ultrafiltration membrane module pressure sensor group 23 detects that the pressure reaches 0.1MPa, then the detection air inlet valve 16 of the integrity detection unit is closed, And detecting the air valve 18 and the air inlet valve group 20 of the ultrafiltration membrane component, waiting for 1min, monitoring the pressure drop of the pressure sensor group 23 of the ultrafiltration membrane component, if the pressure drop exceeds 0.005MPa, carrying out depth test, and if not, displaying the integrity value of the ultrafiltration membrane component on the upper computer.
Referring to fig. 3 (b), during the depth test, the ultrafiltration upper discharge valve 7 and the ultrafiltration water inlet valve 5 are opened, the water feed pump 11 is started, after waiting for 2min, the water feed pump 11 is stopped, the ultrafiltration upper discharge valve 7 and the ultrafiltration water inlet valve 5 are closed, then the detection air inlet valve 16 is opened, when the pressure sensor group 23 detects that the pressure reaches 0.20MPa, the detection air valve 18 is adjusted, the pressure of the ultrafiltration membrane component air inlet valve group 20 is automatically maintained at 0.20MPa one by one for the individual ultrafiltration membrane components through the pressure sensor group 23, the pressure drop is detected, the integrity value of the ultrafiltration membrane component is displayed on the upper computer, the operation and maintenance personnel are reminded, all the valves are closed, and the ultrafiltration enters the maintenance state. The periodically judged equipment integrity simultaneously provides trend judgment and powerful support for equipment maintenance work.
The utility model discloses can guarantee the stability of quality of water effectively, improve unit operation economy, security and intelligent, reduce because of the use of milipore filter equipment, especially the influence that the process back equipment that is washed at continuous water backwash gas is ageing or equipment damages and cause, improve the discovery and the diagnosis of trouble problem, reduce hysteresis quality and randomness, be a safe and reliable's online diagnostic device of power plant milipore filter integrality.
Claims (8)
1. The on-line diagnosis device for the integrity of the ultrafiltration membrane of the power plant is characterized by comprising an ultrafiltration membrane device unit (1), an integrity detection unit (2) and a control unit (3);
the ultrafiltration membrane device unit (1) comprises an ultrafiltration membrane component (4), an ultrafiltration system water inlet valve (5), an ultrafiltration system lower discharge valve (6), an ultrafiltration system upper discharge valve (7) and an ultrafiltration system water production manual valve (9); wherein, the water inlet valve (5) of the ultrafiltration system is connected with a connecting frame pipeline, the connecting frame pipeline is connected with an inlet of the ultrafiltration membrane component (4) and a lower discharge valve (6) of the ultrafiltration system, an outlet of the ultrafiltration membrane component (4) is divided into two paths, one path is connected with a manual valve (9) for producing water of the ultrafiltration system, and the other path is connected with an upper discharge valve (7) of the ultrafiltration system;
the integrity detection unit (2) comprises an ultrafiltration air inlet valve manual isolation valve (14), an ultrafiltration air inlet valve (13), a detection air inlet valve (16), an air storage pressure buffer tank (17), a detection air valve (18) and an ultrafiltration membrane component air inlet valve group (20); wherein, the outlet of the manual isolating valve (14) of the ultrafiltration air inlet valve is divided into two paths, one path is connected with an air inlet valve group (20) of the ultrafiltration membrane component through the ultrafiltration air inlet valve (13), and the other path is connected with the air inlet valve group (20) of the ultrafiltration membrane component through a detection air inlet valve (16), an air storage pressure buffer tank (17) and a detection air valve (18); the intake valve group (20) of the ultrafiltration membrane component is connected with the inlet of the ultrafiltration membrane component (4);
the control unit (3) comprises a DCS component, a pressure sensor (22) and an ultrafiltration membrane component sensitive pressure sensor group (23); wherein, the pressure sensor (22) and the sensitive pressure sensor group (23) of the ultrafiltration membrane component are both connected with the DCS component; the pressure sensor (22) is arranged on the gas storage pressure buffer tank (17), and the ultrafiltration membrane component sensitive pressure sensor group (23) is arranged at the inlet of the ultrafiltration membrane component (4).
2. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, wherein the ultrafiltration system feed valve (5) is connected with an ultrafiltration feed pump (11).
3. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, characterized in that the ultrafiltration system water production manual valve (9) is further connected with an ultrafiltration system water production valve (8), and the ultrafiltration system water production valve (8) is connected with an ultrafiltration system water production check valve (10).
4. The on-line power plant ultrafiltration membrane integrity diagnostic device of claim 1, wherein the ultrafiltration system upper drain valve (7) is connected to the recovery gutter (12).
5. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, wherein an inlet of the ultrafiltration air inlet valve (13) is connected with an ultrafiltration air inlet valve manual isolation valve (14).
6. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, wherein the device is connected with the inlet valve block (20) of the ultrafiltration membrane module through the ultrafiltration inlet valve (13) and the ultrafiltration inlet check valve (15).
7. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, wherein the detection gas valve (18) is connected with the inlet valve block (20) of the ultrafiltration membrane module through a gas outlet check valve (19).
8. The on-line power plant ultrafiltration membrane integrity diagnosis device according to claim 1, wherein the ultrafiltration membrane module inlet valve block (20) is connected with the inlet of the ultrafiltration membrane module (4) through an ultrafiltration membrane module inlet check valve block (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022728959.0U CN213803044U (en) | 2020-11-23 | 2020-11-23 | Online diagnostic device of power plant milipore filter integrality |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022728959.0U CN213803044U (en) | 2020-11-23 | 2020-11-23 | Online diagnostic device of power plant milipore filter integrality |
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| Publication Number | Publication Date |
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| CN213803044U true CN213803044U (en) | 2021-07-27 |
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| CN202022728959.0U Active CN213803044U (en) | 2020-11-23 | 2020-11-23 | Online diagnostic device of power plant milipore filter integrality |
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