CN213063716U - Double-pipeline stable lightweight urea injection system - Google Patents
Double-pipeline stable lightweight urea injection system Download PDFInfo
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- CN213063716U CN213063716U CN202021625619.9U CN202021625619U CN213063716U CN 213063716 U CN213063716 U CN 213063716U CN 202021625619 U CN202021625619 U CN 202021625619U CN 213063716 U CN213063716 U CN 213063716U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model discloses a two pipeline stable form lightweight urea injection system contains urea feed liquor pipe, three-way valve, the parallelly connected of intercommunication in proper order two on the three-way valve spray the pipeline, with two spray the pipeline and communicate simultaneously altogether, communicate and be in three urea drain pipes on the altogether pipe, the one end of managing altogether is sealed, and the other end is equipped with the casting pipe and the urea returns the liquid pipe, spray the pipeline and contain light-duty horizontal multistage centrifugal pump and manual butterfly valve. The utility model discloses a divide into parts the thought, be convenient for processing production and follow-up maintenance, in follow-up maintenance process, convenient to detach and change have improved the precision of carrier encapsulation efficiency and encapsulation, and the structure of horizontal urea pump makes the focus of whole injection system reduce moreover, and installation stability improves, and the cost reduces by a wide margin.
Description
Technical Field
The utility model belongs to the technical field of marine engine exhaust system, in particular to double-pipeline stable form lightweight urea injection system.
Background
The urea injection technology is one of the emission control technologies of the diesel engine which is widely used at present, the existing injection system for the medium-low speed high-power diesel engine only has one pipeline and is not provided with branch pipelines which are connected in parallel, and one urea pump continuously pumps urea solution. Such single-pipe injection systems can result in a reduced life of the urea pump under sustained high-intensity operating conditions, resulting in the entire injection system ceasing to operate once the urea pump fails. Inconvenience is caused during maintenance, and the urea solution is required to be injected off line to influence the use of the diesel engine.
And based on the present light-weighted era trend of industrial structure, the original injection system still has the defects of large structure volume, dispersed unit structure, inconvenient installation, higher cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that prior art's defect is overcome, provided a two pipeline stable form lightweight urea injection system, adopt the thought that the whole part becomes zero, be convenient for processing production and follow-up maintenance, in follow-up maintenance process, convenient to detach and change have improved the precision of carrier encapsulation efficiency and encapsulation, and horizontal urea pump's structure makes whole injection system focus reduce moreover, and installation stability improves, and the cost reduces by a wide margin.
The technical scheme of the utility model:
the utility model provides a two pipeline stable form lightweight urea injection system, contains urea feed liquor pipe, three-way valve, the parallelly connected urea that communicates in proper order two on the three-way valve spray the pipeline, with two spray the pipeline and communicate simultaneously altogether, communicate and be in altogether three urea drain pipes on managing altogether, the one end of managing altogether is sealed, and the other end is equipped with the casting pipe and the urea returns the liquid pipe, the injection pipeline contains light-duty horizontal multistage centrifugal pump and manual butterfly valve.
Further, urea injection system still is equipped with compressed air pipeline, compressed air pipeline route air inlet has connected gradually manual ball valve, first manometer, solenoid valve, two oil water separator, second manometer, pressure sensor and three gas outlet.
Furthermore, a one-way valve is arranged in the injection pipeline, and the urea pump, the manual butterfly valve and the one-way valve are connected in sequence.
Further, the feed liquor end of urea feed liquor pipe is equipped with the feed liquor flange, be equipped with Y type filter between feed liquor flange and the three-way valve.
Further, the three-way valve is an electric adjusting ball valve.
Further, a liquid outlet flange is arranged at the liquid outlet end of the urea liquid outlet pipe, an electromagnetic valve and an electromagnetic flowmeter are sequentially arranged on the urea liquid outlet pipe, and the electromagnetic flowmeter is arranged above the light horizontal multistage centrifugal pump.
Furthermore, a pressure sensor and a third pressure gauge are arranged on the common pipe.
Furthermore, an overflow valve is arranged on the urea liquid return pipe, and the overflow valve is a spring micro-opening type external thread safety overflow valve.
Further, a ship injection unit junction box is arranged on the urea injection system.
Compared with the prior art, the utility model discloses increased the injection pipeline of the same kind on original injection system basis, installed a urea pump, a check valve, a manual butterfly valve etc. on this pipeline, made two urea pump wheel flows replacement work, though increased the pipeline of the same kind, do not make original system volume increase and make and produce electromagnetic interference, the unstable symptom of voltage between each unit, its spatial layout is compacter on the contrary, the arrangement of the follow-up safeguard measure of being convenient for. The design of double-pipeline makes injection system mountable two urea pumps, and the main and auxiliary engine can replace the work, has increased the life of urea pump, and injection system can continue work and carry out the maintenance simultaneously under the condition of a urea pump inefficacy, and system work efficiency improves.
The common overflow valve installed on the original return pipeline is replaced by a spring micro-opening type external thread safety overflow valve, so that the stability of the working pressure is improved. On the branch pipeline of the liquid inlet corresponding to the two urea pumps, a manual butterfly valve and a stainless steel one-way valve are installed, the manual butterfly valve is equivalent to a switch, the working state of the corresponding urea pump can be controlled, and the one-way valve can enable the urea solution to flow directionally.
Two pressure gauges have been increased on original vertical urea injection system's of double-circuit stable form basis, and the manual needle valve of original system pressure gauge below installation can be got rid of through novel mounting means, has practiced thrift manufacturing cost and has not influenced the use. The light horizontal multistage centrifugal pump is used for replacing a vertical centrifugal urea pump, the structure of the horizontal urea pump enables the gravity center of the whole injection system to be reduced, the installation stability is improved, and the cost is greatly reduced; the novel injection system has the advantages of high working efficiency, strong stability, long service life, convenient maintenance and repair and the like of the original double-pipeline stable vertical urea injection system, the design of the internal pipelines of the system is more compact, the structures of the framework and connecting pieces of various components are reduced, the materials are saved, the volume of the whole injection system is reduced, and the novel injection system is suitable for the medium-low speed large diesel engine with the narrow chassis space; the structure of the horizontal urea pump enables the gravity center of the whole system to move downwards, the lower disc is stable and not easy to topple over, the horizontal urea pump can be safely and stably installed in a medium-low speed large diesel engine with a narrow chassis space, meanwhile, a manual needle valve below the original pressure gauge is removed, and accordingly, certain cost is reduced, and the use of the pressure gauge is not influenced in a novel installation mode; the liquid inlet pipeline, the compressed air pipeline and the liquid return pipeline are respectively provided with a pressure gauge, so that the pressure state of the urea solution on each pipeline can be observed in real time, and effective regulation and control can be performed.
The advantages of the novel injection system on the basis of solving the problems are as follows: the spring that newly uses opens formula external screw thread safety overflow valve a little makes injection pressure more stable, and the urea solution that sprays in the hybrid tube distributes more evenly, and this overflow valve can restrain the resonance of pipeline when the pressure of returning the liquid pipeline is too big, installs a check valve respectively except that the urea that makes in the corresponding feed liquor pipeline flows towards a direction on the pipeline that two urea pumps correspond, and still another advantage is: the working one-way valve generates a certain pressure due to the flow of the urea solution, and the other non-working one-way valve can suppress the pressure generated by the working one-way valve; all install the advantage that manual butterfly valve produced on the inlet fluid pipeline of two branches and be: when one urea pump breaks down, the corresponding manual butterfly valve can be adjusted to stop working, the maintenance can be carried out subsequently, and meanwhile, the other manual butterfly valve is adjusted to enable the other urea pump to start working. In summary, the urea injection system can work continuously and stably.
Drawings
FIG. 1 is a schematic view of the overall structure of the utility model;
FIG. 2 is a schematic view of the overall structure of the utility model;
FIG. 3 is a schematic perspective view of the present invention;
FIG. 4 is a schematic perspective view of the present invention;
fig. 5 is a schematic structural view of the compressed air pipeline of the present invention;
FIG. 6 is a schematic view of the structure of the injection pipeline of the present invention;
fig. 7 is a schematic view of the common pipe structure of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings.
Example 1:
the utility model provides a two pipeline stable form lightweight urea injection system, as shown in fig. 1-7, contain urea feed liquor pipe 1, three-way valve 2 that communicate in proper order, parallelly connected two injection pipeline 3 on the three-way valve 2, with two injection pipeline 3 communicate simultaneously altogether pipe 4, communicate and be in three urea drain pipes 5 on the pipe 4 altogether, the one end of being in total pipe 4 seals, and the other end is equipped with the bleeder pipe 43 and the urea returns the liquid pipe 6, injection pipeline 3 contains light-duty horizontal multistage centrifugal pump 31 and manual butterfly valve 32.
Further, the urea injection system is also provided with a compressed air pipeline 7, the compressed air pipeline 7 is sequentially connected with a manual ball valve 72, a first pressure gauge 73, an electromagnetic valve 74, a two-position oil-water separator 75, a second pressure gauge 76, a pressure sensor 77 and three air outlets 78 (air outlet flanges) through an air inlet 71 (air inlet flange), the first pressure gauge is used for detecting air inlet pressure, and the second pressure gauge is used for detecting injection pressure.
Furthermore, a check valve 33 is further arranged in the injection pipeline 3, and the urea pump 31, the manual butterfly valve 32 and the check valve 33 are connected in sequence.
Further, the feed liquor end of urea feed liquor pipe 1 is equipped with feed liquor flange 11, be equipped with Y type filter 12 between feed liquor flange 11 and the three-way valve 2.
Further, the three-way valve 2 is an electric adjusting ball valve.
Further, a liquid outlet flange 51 is arranged at the liquid outlet end of the urea liquid outlet pipe 5, an electromagnetic valve 52 and an electromagnetic flowmeter 53 are sequentially arranged on the urea liquid outlet pipe 5, and the electromagnetic flowmeter is arranged above the light horizontal type multistage centrifugal pump.
Further, a pressure sensor 41 and a third pressure gauge 42 are arranged on the common pipe 4, and the third pressure gauge is used for detecting the urea injection pressure.
Further, an overflow valve 61 is arranged on the urea return pipe 6, the overflow valve 61 is a spring micro-opening type external thread safety overflow valve, and a return pipe flange 62 is arranged at the end of the urea return pipe.
Further, a ship injection unit junction box 9 is arranged on the urea injection system.
Compared with the prior art, the utility model discloses increased the injection pipeline of the same kind on original injection system basis, installed a urea pump, a check valve, a manual butterfly valve etc. on this pipeline, made two urea pump wheel flows replacement work, though increased the pipeline of the same kind, do not make original system volume increase and make and produce electromagnetic interference, the unstable symptom of voltage between each unit, its spatial layout is compacter on the contrary, the arrangement of the follow-up safeguard measure of being convenient for. The design of double-pipeline makes injection system mountable two urea pumps, and the main and auxiliary engine can replace the work, has increased the life of urea pump, and injection system can continue work and carry out the maintenance simultaneously under the condition of a urea pump inefficacy, and system work efficiency improves.
The common overflow valve installed on the original return pipeline is replaced by a spring micro-opening type external thread safety overflow valve, so that the stability of the working pressure is improved. On the branch pipeline of the liquid inlet corresponding to the two urea pumps, a manual butterfly valve and a stainless steel one-way valve are installed, the manual butterfly valve is equivalent to a switch, the working state of the corresponding urea pump can be controlled, and the one-way valve can enable the urea solution to flow directionally.
Two pressure meters are additionally arranged on the basis of an original double-pipeline stable vertical urea injection system, a manual needle valve installed below the original system pressure meter can be removed through a novel installation mode, the production cost is saved, the use is not affected, three pressure meters are installed together through pipeline setting, and the three pressure meters are located on a shell of the whole machine, so that observation and monitoring are facilitated. The light horizontal multistage centrifugal pump is used for replacing a vertical centrifugal urea pump, the structure of the horizontal urea pump enables the gravity center of the whole injection system to be reduced, the installation stability is improved, and the cost is greatly reduced; the novel injection system has the advantages of high working efficiency, strong stability, long service life, convenient maintenance and repair and the like of the original double-pipeline stable vertical urea injection system, the design of the internal pipelines of the system is more compact, the structures of the framework and connecting pieces of various components are reduced, the materials are saved, the volume of the whole injection system is reduced, and the novel injection system is suitable for the medium-low speed large diesel engine with the narrow chassis space; the structure of the horizontal urea pump enables the gravity center of the whole system to move downwards, the lower disc is stable and not easy to topple over, the horizontal urea pump can be safely and stably installed in a medium-low speed large diesel engine with a narrow chassis space, meanwhile, a manual needle valve below the original pressure gauge is removed, and accordingly, certain cost is reduced, and the use of the pressure gauge is not influenced in a novel installation mode; the liquid inlet pipeline, the compressed air pipeline and the liquid return pipeline are respectively provided with a pressure gauge, so that the pressure state of the urea solution on each pipeline can be observed in real time, and effective regulation and control can be performed.
The advantages of the novel injection system on the basis of solving the problems are as follows: the spring that newly uses opens formula external screw thread safety overflow valve a little makes injection pressure more stable, and the urea solution that sprays in the hybrid tube distributes more evenly, and this overflow valve can restrain the resonance of pipeline when the pressure of returning the liquid pipeline is too big, installs a check valve respectively except that the urea that makes in the corresponding feed liquor pipeline flows towards a direction on the pipeline that two urea pumps correspond, and still another advantage is: the working one-way valve generates a certain pressure due to the flow of the urea solution, and the other non-working one-way valve can suppress the pressure generated by the working one-way valve; all install the advantage that manual butterfly valve produced on the inlet fluid pipeline of two branches and be: when one urea pump breaks down, the corresponding manual butterfly valve can be adjusted to stop working, the maintenance can be carried out subsequently, and meanwhile, the other manual butterfly valve is adjusted to enable the other urea pump to start working. In summary, the urea injection system can work continuously and stably.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, and the present invention will have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements all fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a two pipeline stable form lightweight urea injection system which characterized in that: contain urea feed liquor pipe, three-way valve, the parallelly connected urea feed liquor pipe, three-way valve that communicate in proper order two on the three-way valve spray the pipeline, with two spray the pipeline and communicate simultaneously altogether three urea drain pipes on the pipe altogether, the one end of managing altogether is sealed, and the other end is equipped with the casting pipe and the urea returns the liquid pipe, the injection pipeline contains light-duty horizontal multistage centrifugal pump and manual butterfly valve.
2. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: the urea injection system is also provided with a compressed air pipeline, and the compressed air pipeline is sequentially connected with a manual ball valve, a first pressure gauge, an electromagnetic valve, a two-position oil-water separator, a second pressure gauge, a pressure sensor and three air outlets through an air inlet.
3. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: and a one-way valve is also arranged in the injection pipeline, and the urea pump, the manual butterfly valve and the one-way valve are connected in sequence.
4. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: the feed liquor end of urea feed liquor pipe is equipped with the feed liquor flange, be equipped with Y type filter between feed liquor flange and the three-way valve.
5. The dual-line stabilized and lightweight urea injection system of claim 1 or 4, wherein: the three-way valve is an electric adjusting ball valve.
6. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: the liquid outlet end of the urea liquid outlet pipe is provided with a liquid outlet flange, the urea liquid outlet pipe is sequentially provided with an electromagnetic valve and an electromagnetic flowmeter, and the electromagnetic flowmeter is arranged above the light horizontal multistage centrifugal pump.
7. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: and a pressure sensor and a third pressure gauge are arranged on the common pipe.
8. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: and an overflow valve is arranged on the urea liquid return pipe and is a spring micro-opening type external thread safety overflow valve.
9. The dual-pipeline stabilized and lightweight urea injection system of claim 1, wherein: and the urea injection system is provided with a ship injection unit junction box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021625619.9U CN213063716U (en) | 2020-08-07 | 2020-08-07 | Double-pipeline stable lightweight urea injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021625619.9U CN213063716U (en) | 2020-08-07 | 2020-08-07 | Double-pipeline stable lightweight urea injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213063716U true CN213063716U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021625619.9U Active CN213063716U (en) | 2020-08-07 | 2020-08-07 | Double-pipeline stable lightweight urea injection system |
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| Country | Link |
|---|---|
| CN (1) | CN213063716U (en) |
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- 2020-08-07 CN CN202021625619.9U patent/CN213063716U/en active Active
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