CN202266829U - Device for injecting nitric acid into nitric acid storage tanks, and control circuit of device for injecting nitric acid into nitric acid storage tanks - Google Patents
Device for injecting nitric acid into nitric acid storage tanks, and control circuit of device for injecting nitric acid into nitric acid storage tanks Download PDFInfo
- Publication number
- CN202266829U CN202266829U CN2011203450172U CN201120345017U CN202266829U CN 202266829 U CN202266829 U CN 202266829U CN 2011203450172 U CN2011203450172 U CN 2011203450172U CN 201120345017 U CN201120345017 U CN 201120345017U CN 202266829 U CN202266829 U CN 202266829U
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- nitric acid
- storage tank
- acid storage
- corrosion
- pipeline
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Abstract
The utility model relates to a device for injecting nitric acid into nitric acid storage tanks, and a control circuit of the device for injecting the nitric acid into the nitric acid storage tanks. The device comprises a corrosion resisting self-priming pump (3) which is communicated with a nitric acid injection pipe opening (1) through an input pipeline; the corrosion resisting self-priming pump (3) is communicated with the nitric acid storage tanks (10) through an output pipeline; the input pipeline and the output pipeline are connected with a pump inlet ball valve (2) and a pump outlet ball valve (4); and a nitric acid storage tank nitric acid inlet (8) is positioned on the top of each nitric acid storage tank (10). According to the device for injecting the nitric acid into the nitric acid storage tanks, the nitric acid storage tank nitric acid inlet is formed on the top of each nitric acid storage tank, so the work pressure in the working process of a pipeline and static pressure in standby are reduced, and the nitric acid injection process is safe.
Description
Technical field
The utility model relates to a kind of fluid injection technology of wet tank, and needed nitric acid liquid adds device and the control circuit that stores in the especially pulp dewatering technology.
Background technique
The dehydrating plant pulp dewatering of big Red Hill pipeline company separates uses ceramic filter; Every ceramic filter operation must be cleaned its ceramic plate after 7 hours; Its cleaning way requires to use 60% nitric acid, and every equipment cleaning time is about 40 to 50 minutes, and nitric acid cleaning use amount is big; So need nitric acid be stored in two capacity is in 30 tons the storage tank, and two storage tanks are regularly added to satisfy normal equipment cleaning.Original addition manner adopts interim anti-corrosive pump to be connected the nitric acid storage tank with temporary pipeline to add; Produce additional workload, and dangerous, if leak in the interpolation process; Red fuming nitric acid (RFNA) has severe corrosive and acid mist has toxicity, and serious accident possibly take place.So need to adopt a kind of reliable and stable mode the nitric acid storage tank is added nitric acid.
Summary of the invention
The utility model has designed a kind of nitric acid storage tank and has annotated sour device and control circuit thereof, the unsafe factor the when technical problem of its solution is manual work interpolation nitric acid, and tradition is added nitric acid pattern inconvenience.
In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:
A kind of nitric acid storage tank is annotated sour device, comprises corrosion-resistant self-priming pump (3), and said corrosion-resistant self-priming pump (3) is communicated with notes acid tube mouths (1) through input pipeline, and said corrosion-resistant self-priming pump (3) is communicated with said nitric acid storage tank (10) through output pipeline; On said input pipeline and said output pipeline, be connected with pump inlet ball valve (2) and pump discharge ball valve (4) respectively, nitric acid storage tank acid inlet (8) is positioned at said nitric acid storage tank (10) top.
Further, said notes acid tube mouth (1) adopts flange to be connected with haulage vehicle nitric acid tank tetrafluoroethylene flexible pipe.
Further; Also comprise blowoff line (6) and nitric acid recovery pond (7); Said blowoff line (6) one ends are connected on the input pipeline between pump inlet ball valve (2) and the corrosion-resistant self-priming pump (3), and said blowoff line (6) the other end is arranged in and nitric acid recovery pond (7).
Further, the output terminal of said corrosion-resistant self-priming pump (3) converts the output pipeline that several are connected in parallel into, and each bar output pipeline is communicated with a said nitric acid storage tank (10) respectively.
A kind of nitric acid storage tank is annotated the control circuit of sour device; On nitric acid storage tank (10) tube wall, liquid level detecting sensor (LJ) is installed; The output terminal of said liquid level detecting sensor (LJ) is connected with the input end of nitric acid tank level upper limit signal relay coil (KA1); Said nitric acid tank level upper limit signal relay coil (KA1) output terminal is connected with the input end of acoustic-optic alarm (SL) and A.C. contactor (KM), and said A.C. contactor (KM) is through the unlatching of switch control with said corrosion-resistant self-priming pump (M).
Further, said switch comprises start button (TA) and stop button (QA).
Further, be connected in series between the three-phase alternating-current supply between the said corrosion-resistant self-priming pump (M) A.C. contactor (KM) and thermorelay (RJ).
Further, also connect an experiment position on-off switch (SA1) on the said liquid level detecting sensor (LJ).
Sour device annotated by this nitric acid storage tank and control circuit has following beneficial effect:
(1) the utility model is owing to be arranged at the nitric acid tank top with nitric acid storage tank acid inlet, and the static pressure of the working pressure when having reduced the work of pipeline during with standby makes that the sour process of notes is safer.
(2) the utility model is owing to the electric control of corrosion-resistant self-priming centrifugal pump is that on-site manual control and nitric acid tank level signal carry out chain; In adding the nitric acid process, carry out onsite alarming and termination of pumping when adding above the regulation liquid level; Therefore can be in time and solve the site safety problem accurately, it is low and safe and reliable to add sour device maintenance.
Description of drawings
Fig. 1: the utility model nitric acid storage tank is annotated the structural representation of sour device;
Fig. 2: the utility model nitric acid storage tank is annotated sour device main circuit schematic diagram;
Fig. 3: the utility model nitric acid storage tank is annotated sour device control wiring schematic diagram.
Description of reference numerals:
1-notes acid tube mouth; 2-pump inlet ball valve; 3-corrosion-resistant self-priming pump; 4-pump discharge ball valve; 5-pipeline blowdown valve; 6-blowoff line; 7-nitric acid recovery pond; 8-nitric acid storage tank acid inlet; 9-nitric acid storage tank relief opening; 10-nitric acid storage tank;
QF1-automatic air-break switch; KM-A.C. contactor; RJ-thermorelay; M-corrosion-resistant self-priming pump;
RD-fus; TA-start button; QA-stop button; KA1-nitric acid tank level upper limit signal relay coil; KM-A.C. contactor; RJ-thermorelay contact; LJ-liquid level detecting sensor; SA1-experiment position on-off switch; SL-acoustic-optic alarm.
Embodiment
Below in conjunction with Fig. 1 to Fig. 3, the utility model is further specified:
As shown in Figure 1, a kind of nitric acid storage tank is annotated sour device, comprises corrosion-resistant self-priming pump 3, and corrosion-resistant self-priming pump 3 is communicated with notes acid tube mouth 1 through input pipeline, and corrosion-resistant self-priming pump 3 is communicated with nitric acid storage tank 10 through output pipeline; On input pipeline and output pipeline, be connected with pump inlet ball valve 2 and pump discharge ball valve 4 respectively, nitric acid storage tank acid inlet 8 is positioned at nitric acid storage tank 10 tops.Nitric acid storage tank acid inlet 8 is arranged at nitric acid tank top 10, and the static pressure when working pressure when having reduced the work of pipeline and standby makes that to annotate sour process safer.
Select for use corrosion-resistant self-priming pump 3 because it has self-absorption function, can pump the liquid that is lower than below the pump mounting point, and stable performance; Simple to operate, after only needing before pump uses for the first time, to irritate liquid, use then need not to irritate liquid after reaching for the second time; Directly start gets final product; The self-priming height substitutes traditional Under Water Pumps about three meters, can normally carry nitric acid.The self-priming pump model is 50FZB-30L.
In addition; This notes acid tube mouth 1 of annotating sour device adopts flange connection can make things convenient for the tetrafluoroethylene flexible pipe of the diameter 40mm--50mm of quick connection haulage vehicle nitric acid tank; Corrosion-resistant self-priming pump 3 inlet pipelines are DN50; Outlet conduit is DN32, and the inlet pipeline diameter can safety and stability be carried nitric acid in the haulage vehicle nitric acid tank greater than the outlet conduit diameter.Pipeline blowdown valve 6 and pipeline thereof can be when maintenance needs nitric acid in safety blowdown pump and the pipeline, and the blowoff line outlet gets into the nitric acid recovery pond, avoids discharging the pollution of nitric acid to surrounding environment.
As shown in Figure 2, be connected in series with A.C. contactor KM and thermorelay RJ between the corrosion-resistant self-priming pump M between the three-phase alternating-current supply.This A.C. contactor KM and thermorelay RJ can prevent the outage after again power supply immediately can cause corrosion-resistant self-priming pump M to be in runaway condition, influence the working life of device.
As shown in Figure 3; A kind of nitric acid storage tank is annotated the control circuit of sour device; Liquid level detecting sensor LJ is installed on nitric acid storage tank 10 tube walls; The output terminal of liquid level detecting sensor LJ is connected with the input end of nitric acid tank level upper limit signal relay coil KA1, and said nitric acid tank level upper limit signal relay coil KA1 output terminal is connected with the input end of acoustic-optic alarm SL and A.C. contactor KM, and A.C. contactor KM is through the unlatching of switch control with corrosion-resistant self-priming pump M.Switch comprises start button TA and stop button QA.
In addition, also connect an experiment position on-off switch SA1 on the liquid level detecting sensor LJ, this experiment position on-off switch SA1 can detect liquid level detecting sensor LJ and whether be in normal working state.
Carry out chain because the electric control of corrosion-resistant self-priming centrifugal pump is on-site manual control and nitric acid tank level signal; In adding the nitric acid process, carry out onsite alarming and termination of pumping when adding above the regulation liquid level; Therefore can be in time and solve the site safety problem accurately, it is low and safe and reliable to add sour device maintenance.
Combine accompanying drawing that the utility model has been carried out exemplary description above; Obviously the realization of the utility model does not receive the restriction of aforesaid way; As long as adopted method design of the utility model and the various improvement that technological scheme is carried out; Or the design of the utility model and technological scheme are directly applied to other occasion without improving, all in the protection domain of the utility model.
Claims (8)
1. a nitric acid storage tank is annotated sour device, comprises corrosion-resistant self-priming pump (3), and said corrosion-resistant self-priming pump (3) is communicated with notes acid tube mouths (1) through input pipeline, and said corrosion-resistant self-priming pump (3) is communicated with said nitric acid storage tank (10) through output pipeline; On said input pipeline and said output pipeline, be connected with pump inlet ball valve (2) and pump discharge ball valve (4) respectively, it is characterized in that: nitric acid storage tank acid inlet (8) is positioned at said nitric acid storage tank (10) top.
2. annotate sour device according to the said nitric acid storage tank of claim 1, it is characterized in that: said notes acid tube mouth (1) adopts flange to be connected with haulage vehicle nitric acid tank tetrafluoroethylene flexible pipe.
3. annotate sour device according to the said nitric acid storage tank of claim 2; It is characterized in that: also comprise blowoff line (6) and nitric acid recovery pond (7); Said blowoff line (6) one ends are connected on the input pipeline between pump inlet ball valve (2) and the corrosion-resistant self-priming pump (3), and said blowoff line (6) the other end is arranged in and nitric acid recovery pond (7).
4. annotate sour device according to any one said nitric acid storage tank in the claim 1 to 3; It is characterized in that: the output terminal of said corrosion-resistant self-priming pump (3) converts the output pipeline that several are connected in parallel into, and each bar output pipeline is communicated with a said nitric acid storage tank (10) respectively.
5. a nitric acid storage tank is annotated the control circuit of sour device; It is characterized in that: on nitric acid storage tank (10) tube wall, liquid level detecting sensor (LJ) is installed; The output terminal of said liquid level detecting sensor (LJ) is connected with the input end of nitric acid tank level upper limit signal relay coil (KA1); Said nitric acid tank level upper limit signal relay coil (KA1) output terminal is connected with the input end of acoustic-optic alarm (SL) and A.C. contactor (KM), and said A.C. contactor (KM) is through the unlatching of switch control with said corrosion-resistant self-priming pump (M).
6. annotate the control circuit of sour device according to the said nitric acid storage tank of claim 5, it is characterized in that: said switch comprises start button (TA) and stop button (QA).
7. annotate the control circuit of sour device according to claim 5 or 6 said nitric acid storage tanks, it is characterized in that: A.C. contactor (KM) and thermorelay (RJ) are connected in series between the three-phase alternating-current supply between the said corrosion-resistant self-priming pump (M).
8. annotate the control circuit of sour device according to the said nitric acid storage tank of claim 7, it is characterized in that: also connect an experiment position on-off switch (SA1) on the said liquid level detecting sensor (LJ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203450172U CN202266829U (en) | 2011-09-15 | 2011-09-15 | Device for injecting nitric acid into nitric acid storage tanks, and control circuit of device for injecting nitric acid into nitric acid storage tanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203450172U CN202266829U (en) | 2011-09-15 | 2011-09-15 | Device for injecting nitric acid into nitric acid storage tanks, and control circuit of device for injecting nitric acid into nitric acid storage tanks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266829U true CN202266829U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203450172U Expired - Lifetime CN202266829U (en) | 2011-09-15 | 2011-09-15 | Device for injecting nitric acid into nitric acid storage tanks, and control circuit of device for injecting nitric acid into nitric acid storage tanks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442626A (en) * | 2011-09-15 | 2012-05-09 | 云南大红山管道有限公司 | Nitric acid storage tank annotates sour device and control circuit thereof |
| CN104084294A (en) * | 2014-07-04 | 2014-10-08 | 云南大红山管道有限公司 | Ceramic filtering machine tank |
-
2011
- 2011-09-15 CN CN2011203450172U patent/CN202266829U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442626A (en) * | 2011-09-15 | 2012-05-09 | 云南大红山管道有限公司 | Nitric acid storage tank annotates sour device and control circuit thereof |
| CN104084294A (en) * | 2014-07-04 | 2014-10-08 | 云南大红山管道有限公司 | Ceramic filtering machine tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |