CN208057423U - Flue gas seawater wet desulphurization centrifugal booster pump anticorrosion integrated device - Google Patents
Flue gas seawater wet desulphurization centrifugal booster pump anticorrosion integrated device Download PDFInfo
- Publication number
- CN208057423U CN208057423U CN201820375088.9U CN201820375088U CN208057423U CN 208057423 U CN208057423 U CN 208057423U CN 201820375088 U CN201820375088 U CN 201820375088U CN 208057423 U CN208057423 U CN 208057423U
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- China
- Prior art keywords
- impressed current
- flue gas
- cathode
- anode
- corrosion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000013535 sea water Substances 0.000 title claims abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000003546 flue gas Substances 0.000 title claims abstract description 18
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000010962 carbon steel Substances 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims 1
- 238000006477 desulfuration reaction Methods 0.000 abstract description 10
- 230000023556 desulfurization Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses an anticorrosive integrated device of centrifugal booster pump of flue gas sea water wet flue gas desulfurization, include: the device comprises an external current cathode protection device, a carbon steel shaft sleeve sacrificial anode device and a shaft current grounding device. The external current cathode protection device comprises an auxiliary anode A1, an auxiliary anode A2, an auxiliary anode A3, a cathode R1, a cathode R2 and a zero cathode point; the carbon steel shaft sleeve sacrificial anode device comprises a carbon steel Q235 which is made of a pressing sleeve material and is used as a sacrificial anode of a rotor. The shaft current grounding device comprises a carbon brush and a wire, and the shaft current is conducted to the grounding grid. The centrifugal booster pump anticorrosion integrated device for flue gas seawater wet desulphurization has a good anticorrosion effect, can effectively improve the reliability of a seawater pump, and greatly reduces the maintenance and operation cost.
Description
Technical field
The utility model belongs to flue gas desulfurization field, and specifically a kind of centrifugal booster of flue gas seawater wet desulphurization is anti-
Rotten integrating device.
Background technology
Sea water desulfuration using plant condenser condensation seawater be used as the absorbent of flue gas desulfurization, investment with operating cost compared with
It is low, it is widely used by a large amount of Coastal Power Stations.
The desulfurization sea water pump in practical engineering application generally uses white steel at present, in order to reduce processing and purchase cost, greatly
Use the lower material of the unit price such as 2Cr13, its corrosion resistance to be not so good as 2205 dual phase steels or 316L stainless steels more.Impeller material
Mostly ZG3Cr13, shell mostly use greatly Minvar HT200Ni 3Cr, it has certain corrosion resistance, but anti-corrosion is main
It realizes, coating aging failure or mechanical damage occurs and is repaired not in time by coated inside and thickness nargin, possible corrosion is hit
Wear pump case.It is sealed using sealing rubber ring between axle sleeve, is easy aging in bad repair, into seawater at gap and pump shaft surface will
Serious crevice corrosion occurs, pump body part material is different and galvanic corrosion occurs, and easily leads to breaking axis.If desulfurization
Sea water pump breaks down, and gently then influences desulfuration efficiency, heavy then imposed a fine by environmentally friendly supervisory organ, or even unit tripping occurs and leads to
Environmentally friendly event.
Utility model content
To solve the above problem of the existing technology, this application provides a kind of centrifugal liters of flue gas seawater wet desulphurization
Press pump anti-corrosion integrating device can effectively promote the reliability of sea water pump, and be greatly lowered with preferable anti-corrosion effect
Maintenance and operating cost.
To achieve the above object, the application the technical solution adopted is that：A kind of centrifugal boosting of flue gas seawater wet desulphurization
Anti-corrosion integrating device is pumped, including：External impressed current cathode protection device；The external impressed current cathode protection device, including auxiliary sun
The cloudy point of pole A1, impressed current anode A2, impressed current anode A3, cathode R1, cathode R2 and zero；The impressed current anode A1 is arranged in inlet pipeline
Pump case on, impressed current anode A3 is arranged on the pump case of outlet conduit, the top of pump case be equipped with impressed current anode A2；The cathode
R1 is arranged on the pump case of impressed current anode A2 opposite faces, and the cathode R2 is arranged on the pump case of impressed current anode A3 opposite faces, institute
1 cloudy point is stated on the pump case of free end；The impressed current anode A1, impressed current anode A2, impressed current anode A3, cathode R1, cathode R2
Pass through cable connection to terminal box with 1 cloudy point.
Further, above-mentioned apparatus further includes carbon steel axle sleeve sacrificial anode device, is located at the impeller both sides of pump shaft.
Further, the carbon steel axle sleeve sacrificial anode device, including sequentially connected clamping sleeve, axle sleeve, sealing element, axis
It holds.
Further, the material of the clamping sleeve is Q235 carbon steels.
Further, above-mentioned apparatus further includes shaft current earthing or grounding means, is located at the driving end of pump shaft.
Further, the shaft current earthing or grounding means, including carbon brush and conducting wire；The carbon brush and wire arrangements are in pump shaft
Driving end simultaneously naked is exposed on the external.
Further, the carbon brush is connected by copper conductor with grounded screen.
The utility model due to using the technology described above, can obtain following technique effect：Effectively prevent desulfurization sea
The crevice corrosion of water pump and electrochemical corrosion achieve the effect that the entire sea water pump of protection.Desulfurization sea water pump uses this anti-corrosion collection
At device, its reliability can be effectively promoted, and considerably reduce maintenance and operating cost.
Description of the drawings
The utility model shares 3 width of attached drawing：
Fig. 1 is the sea water pump external impressed current cathode protection device installation site side view of embodiment.
Fig. 2 is the sea water pump external impressed current cathode protection device installation site front view of embodiment.
Fig. 3 is the sea water pump carbon steel axle sleeve sacrificial anode device and shaft current earthing or grounding means scheme of installation of embodiment.
Number explanation in figure：1, impeller, 2, clamping sleeve, 3, axle sleeve, 4, sealing element, 5, bearing, 6, carbon brush, 7, pump shaft, 8,
Conducting wire；11, impressed current anode A1；12, impressed current anode A2；13, impressed current anode A3；14, the pump housing；15, terminal box；16,1 cloudy point；
17, cathode；18, cathode R1；19, pump cover；20, cathode R2.
Specific implementation mode
In order to keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail in example.
Embodiment 1
Refering to what is shown in Fig. 1, by taking the X-type double suction centrifugal pump that certain thermal power plant flue gas desulfurization with seawater system uses as an example,
Critical piece material：The pump housing, pump cover material are spheroidal graphite cast-iron QT500-7, and axle sleeve and impeller material are ZG3Cr13, shaft material
2Cr13.For the pump shaft as the critical piece used in 15-35 DEG C of Seawater, corrosion resistance is bad, it is difficult to abundant by corroding
It spends to ensure projected life, after running several years, significant corrosion problems occur for the positions such as pump shaft, and erosion profile is substantially similar, it is seen that
Serious corrosion occurs for pump shaft surface, contacts a circle with axis particularly along axle sleeve, for the width of most serious close to 10mm, depth reaches 8mm
Left and right, corrosion rate reach 7mm/ or more, have seriously affected safety in production.
External impressed current cathode protection device installation site and selection must rationally, installation point can adapt to pump body structure and
The entire pump housing can be protected, be provided with three impressed current anodes A1, A2, A3 on the shell of the pump housing, impressed current anode A1 settings into
On the pump case of mouth pipeline, impressed current anode A3 is arranged on the pump case of outlet conduit, and impressed current anode A2 is equipped at the top of pump case；It is cloudy
Pole R1 is arranged on the pump case of impressed current anode A2 opposite faces, and cathode R2 is arranged on the pump case of impressed current anode A3 opposite faces, and zero is cloudy
Point is on the pump case of free end.Installation point is arranged so to can adapt to pump body structure and the entire pump housing can be protected.
Carbon steel axle sleeve sacrificial anode device is arranged in pump shaft impeller both sides, and clamping sleeve material is changed to by ZG3Cr13
Q235 carbon steels regard the sacrificial anode of seawater pump rotor using it；Q235 carbon steel axle sleeve intensity is enough, cheap, and processing is held
Easily, although annual need replacing once, it can achieve the purpose that the rotatable parts such as the higher pump shaft of conservation value and impeller.
The brush of shaft current earthing or grounding means is located on the pump driving naked pump shaft being exposed on the external in end, can prevent seawater spray in this way
It splashes on brush, brush is communicated with conducting wire with grounded screen, for discharging pump shaft charge, is reduced pump shaft potential, is mitigated pump shaft etc. and turn
The electrochemical corrosion of dynamic part.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (7)
1. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, which is characterized in that including：External impressed current is cloudy
Electrode protector；The external impressed current cathode protection device, including impressed current anode A1, impressed current anode A2, impressed current anode A3, cathode
R1, cathode R2 and 1 cloudy point；The impressed current anode A1 is arranged on the pump case of inlet pipeline, and impressed current anode A3 is arranged in outlet
On the pump case in road, impressed current anode A2 is equipped at the top of pump case；The pump case in impressed current anode A2 opposite faces is arranged in the cathode R1
On, the cathode R2 is arranged on the pump case of impressed current anode A3 opposite faces, and described zero cloudy point is on the pump case of free end；It is described
The cloudy point of impressed current anode A1, impressed current anode A2, impressed current anode A3, cathode R1, cathode R2 and zero passes through cable connection to terminal box.
2. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, feature exist according to claim 1
In above-mentioned apparatus further includes carbon steel axle sleeve sacrificial anode device, is located at the impeller both sides of pump shaft.
3. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, feature exist according to claim 2
In, the carbon steel axle sleeve sacrificial anode device, including sequentially connected clamping sleeve, axle sleeve, sealing element, bearing.
4. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, feature exist according to claim 3
In the material of the clamping sleeve is Q235 carbon steels.
5. the centrifugal booster anti-corrosion integrating device of a kind of flue gas seawater wet desulphurization according to claim 1 or claim 2, feature
It is, above-mentioned apparatus, further includes shaft current earthing or grounding means, is located at the driving end of pump shaft.
6. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, feature exist according to claim 5
In, the shaft current earthing or grounding means, including carbon brush and conducting wire；The carbon brush and wire arrangements in pump shaft drive end and it is exposed outside
Portion.
7. a kind of centrifugal booster anti-corrosion integrating device of flue gas seawater wet desulphurization, feature exist according to claim 6
In the carbon brush is connected by conducting wire with grounded screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820375088.9U CN208057423U (en) | 2018-03-20 | 2018-03-20 | Flue gas seawater wet desulphurization centrifugal booster pump anticorrosion integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820375088.9U CN208057423U (en) | 2018-03-20 | 2018-03-20 | Flue gas seawater wet desulphurization centrifugal booster pump anticorrosion integrated device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057423U true CN208057423U (en) | 2018-11-06 |
Family
ID=63989255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820375088.9U Expired - Fee Related CN208057423U (en) | 2018-03-20 | 2018-03-20 | Flue gas seawater wet desulphurization centrifugal booster pump anticorrosion integrated device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115161645A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Cathode protection device of centrifugal seawater booster pump |
-
2018
- 2018-03-20 CN CN201820375088.9U patent/CN208057423U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115161645A (en) * | 2022-06-16 | 2022-10-11 | 华能(大连)热电有限责任公司 | Cathode protection device of centrifugal seawater booster pump |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181106 Termination date: 20200320 |