CN214405635U - Heat tracing pipeline in petrochemical production - Google Patents
Heat tracing pipeline in petrochemical production Download PDFInfo
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- CN214405635U CN214405635U CN202120039726.1U CN202120039726U CN214405635U CN 214405635 U CN214405635 U CN 214405635U CN 202120039726 U CN202120039726 U CN 202120039726U CN 214405635 U CN214405635 U CN 214405635U
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Abstract
The utility model provides a heat tracing pipeline in petrochemical production, which belongs to the technical field of heat exchange equipment, and has the structure that a steam input main pipe is connected in parallel and shunts each steam input branch pipe, each steam input branch pipe is respectively connected in series with a corresponding condensed water output branch pipe, a pipeline between each steam input branch pipe and each condensed water output branch pipe is heat tracing each branch heat exchange load, and each condensed water output branch pipe is converged and connected with a condensed water output main pipe; an ejector is additionally arranged between the steam input main pipe and each steam input branch pipe, the steam input main pipe is led and communicated to the nozzle input end of the ejector, the diffusion chamber output end of the ejector is connected with a mixed fluid pipeline, and the mixed fluid pipeline is connected with each steam input branch pipe in parallel; and each condensed water output branch pipe is connected with an injection fluid pipe in a converging manner, and the injection fluid pipe is connected to an injection fluid end of the ejector. The condensed water is used as injection fluid through the ejector and enters the heat tracing system together with the steam, so that the heat energy of the condensed water can be effectively utilized, and the consumption of the original steam is reduced.
Description
Technical Field
The utility model belongs to the technical field of the indirect heating equipment technique and specifically relates to a heat tracing pipeline in petrochemical production.
Background
Generally, in the production and operation processes of petrochemical devices, the condensation point of part of materials is higher, and a heat tracing pipeline needs to be added when the air temperature is lower in winter. At present, steam or hot water is generally adopted as a heat source in a heat tracing pipeline, the most common method is that steam is introduced into the heat tracing pipeline from a steam pipe network of a system, a main pipeline medium is condensed into a steam-water coexisting state after being heated, and steam condensate is sent to a condensate pipe network of the system through a drain valve.
The heat tracing mode of direct input and direct output of traditional steam has the advantages that the heat demand of the working environment of the traditional mode for heat tracing is low, the temperature reduction of the steam or condensed water after heat tracing is less, the steam or condensed water rich in high heat surplus is directly discharged, and a large amount of energy is wasted.
Disclosure of Invention
The technical task of the utility model is to solve the deficiency of the prior art, provide a heat tracing pipeline in petrochemical production.
The technical scheme of the utility model is realized in the following way, the heat tracing pipeline in petrochemical production of the utility model structurally comprises a steam input header pipe, a steam input branch pipe, heat exchange loads of all branches, a condensed water output branch pipe and a condensed water output header pipe,
the steam input main pipe is connected with each steam input branch pipe in parallel, each steam input branch pipe is respectively connected with the corresponding condensed water output branch pipe in series, a pipeline between each steam input branch pipe and each condensed water output branch pipe is used for tracing heat exchange load of each branch, and each condensed water output branch pipe is converged and connected with the condensed water output main pipe;
an ejector is additionally arranged between the steam input main pipe and each steam input branch pipe,
the steam input main pipe is led in and communicated with the nozzle input end of the ejector, the output end of the diffusion chamber of the ejector is connected with a mixed fluid pipeline,
the mixed fluid pipeline is connected in parallel and shunts each steam input branch pipe;
and each condensed water output branch pipe is connected with an injection fluid pipe in a converging manner, and the injection fluid pipe is connected to an injection fluid end of the ejector.
A mixing fluid line valve is arranged on the mixing fluid line.
Each steam input branch pipe is respectively provided with a corresponding steam input branch pipe valve.
The upstream ends of the steam input branch pipes are introduced into a normally-stopped steam input heat-supplementing standby main pipe, a normally-stopped steam input heat-supplementing standby main pipe valve is configured on the normally-stopped steam input heat-supplementing standby main pipe, and the normally-stopped steam input heat-supplementing standby main pipe is connected in parallel to shunt the steam input branch pipes.
Each condensed water output branch pipe is respectively provided with a drain valve corresponding to each path.
A condensed water output main pipe valve is arranged on the condensed water output main pipe.
And the injection fluid pipe is provided with an injection fluid pipe valve.
The flow of the injection fluid pipe valve is larger than that of the condensed water output main pipe valve.
The ejector adopts an adjustable ejector.
Compared with the prior art, the utility model produced beneficial effect is:
the utility model discloses a heat tracing pipeline in petrochemical production, based on traditional steam direct input, the heat tracing mode of direct output, the operational environment of its traditional mode is low to the heat tracing's heat demand, and the heat tracing back steam or the condensate cooling are few, are rich in high heat surplus steam or condensate and are directly discharged, have wasted a large amount of energy, based on this, the utility model discloses change the pipeline design, its advantage is:
1. the utility model discloses an ejector does not need extra energy consumption as drive arrangement, the operation in-process, does not increase extra working costs.
2. On the premise of ensuring that the medium of the main pipeline is not frozen, the temperature of the inlet of the heat tracing pipeline is reduced, and the quantity of heat taken by the medium of the main pipeline is reduced, so that the effect of reducing heat utilization is achieved, and the steam consumption is saved.
3. The high-temperature condensed water sent out to the condensed water pipe network of the system is prevented from generating a steam-water coexistence state, the erosion of the pipeline is reduced, and the phenomena of pipeline leakage and liquid impact are avoided.
4. According to the process requirement, if the heat tracing pipeline is internally provided with hot water circulation, a drain valve of a condensation water valve group in the conventional design can be removed, and the material cost is reduced.
5. The utility model discloses an ejector with adjustable can adjust ejector steam quantity according to in service behavior, when playing energy-conserving effect, leaks the risk in the reduction steam valve, reduces the plant maintenance expense.
The utility model discloses a heat tracing pipeline in petrochemical production reasonable in design, simple structure, safe and reliable, convenient to use, easy to maintain have fine using value widely.
Drawings
FIG. 1 is a schematic structural view of a conventional heat tracing pipeline in the background art;
FIG. 2 is a schematic structural diagram of the present invention;
fig. 3 is a schematic structural diagram of the ejector of the present invention.
The reference numerals in the drawings denote:
1. a steam input main pipe 2, steam input branch pipes 3, branch heat exchange loads 4, condensed water output branch pipes 5 and a condensed water output main pipe,
6. an ejector is arranged on the air inlet of the air conditioner,
7. a nozzle input end 8, a diffusion chamber output end 9, a mixed fluid pipeline,
10. an injection fluid pipe 11, an injection fluid end,
12. a valve for the mixed fluid line is provided,
13. the steam is input into a branch pipe valve,
14. a normal stop steam input heat-supplementing standby main pipe 15, a normal stop steam input heat-supplementing standby main pipe valve,
16. the water-discharging valve is a water-discharging valve,
17. a condensed water output main pipe valve is arranged on the lower end of the condensed water pipe,
18. a fluid pipe injector.
Detailed Description
The following detailed description will be made of a heat tracing pipeline in petrochemical production according to the present invention with reference to the accompanying drawings.
As shown in the attached drawings, the heat tracing pipeline in petrochemical production of the utility model structurally comprises a steam input header pipe 1, steam input branch pipes 2, branch heat exchange loads 3, condensed water output branch pipes 4 and a condensed water output header pipe 5,
the steam input header pipe 1 is connected with and shunts each steam input branch pipe 2 in parallel, each steam input branch pipe 2 is respectively connected with a corresponding condensed water output branch pipe 4 in series, a pipeline between each steam input branch pipe 2 and each condensed water output branch pipe 4 is accompanied with each branch heat exchange load 3, and each condensed water output branch pipe 4 is converged and connected with a condensed water output header pipe 5;
an ejector 6 is additionally arranged between the steam input main pipe 1 and each steam input branch pipe 2,
the steam input manifold 1 is led in and communicated with a nozzle input end 7 of an ejector 6, a diffusion chamber output end 8 of the ejector is connected with a mixed fluid pipeline 9,
the mixed fluid pipeline 9 is connected in parallel and shunts each steam input branch pipe 2;
the condensed water output branch pipes 4 are connected with an injection fluid pipe 10 in a confluence mode, and the injection fluid pipe 10 is connected to an injection fluid end 11 of the ejector.
A mixing fluid line valve 12 is provided in the mixing fluid line 9.
Each steam input branch pipe 2 is respectively provided with a corresponding steam input branch pipe valve 13.
The upstream end of each steam input branch pipe 2 is introduced into a normally-stopped steam input heat-supplementing standby main pipe 14, a normally-stopped steam input heat-supplementing standby main pipe valve 15 is arranged on the normally-stopped steam input heat-supplementing standby main pipe 14, and the normally-stopped steam input heat-supplementing standby main pipe 14 is connected in parallel to branch each steam input branch pipe 2.
The condensed water output branch pipes 4 are respectively provided with drain valves 16 corresponding to the channels. Steam traps, also known as automatic drains or condensate drains, are used in both steam and gas systems. The steam trap is installed at the end of the steam-heated pipe and functions to continuously discharge the condensed water in the steam-heated pipe to the outside of the pipe.
Most steam traps can automatically identify steam and water, so that the aim of automatically stopping steam and draining water is fulfilled. The steam trap is widely applied to the industries of petrochemical industry, food pharmacy, power plants and the like, and plays a great role in energy conservation and emission reduction.
A condensate outlet manifold valve 17 is arranged on the condensate outlet manifold 5.
The ejector fluid pipe valve 18 is provided in the ejector fluid pipe 10.
The flow rate of the injection fluid pipe valve 18 is larger than that of the condensed water output main pipe valve 17.
The ejector 6 is an adjustable ejector. The method can adopt a nozzle-adjustable ejector, adopts a scheme that a spray needle is inserted into a nozzle of the ejector to adjust the working parameters of the ejector, establishes an adjustable ejector performance calculation model, and calculates the influence of the sectional area change of the nozzle on parameters such as an ejection coefficient, gas pressure, gas flow and the like. By adjusting the throat area of the ejector, the effective working range of the ejector can be widened, and the influence of the inlet parameters of the ejector on the outlet parameters is reduced.
The heat tracing system used in petrochemical production can be formed.
The utility model discloses utilize the negative pressure draft when steam ejector moves as whole heat tracing system's circulation power supply.
An ejector is added at the steam introduction position, the ejector is used for ejecting and sucking condensed water at the tail end of the heat tracing pipeline, the condensed water is heated and pressurized and then enters the heat tracing area, the condensed water is cooled after being heated by heat exchange loads of branches of the heat tracing area pipeline, a drain valve is arranged on the condensed water valve bank, a large part of the condensed water is sucked by the ejector and returns to a main pipe of the heat tracing valve bank in the heat tracing area, and a small part of the condensed water is sent to a condensed water pipe network outside the system.
The condensed water is used as injection fluid and enters the heat tracing system together with the steam through the ejector, so that the heat energy of the condensed water can be effectively utilized, the consumption of the original steam is reduced, the economic benefit is improved, and the energy conservation and the environmental protection are further realized.
The utility model discloses an ejector with adjustable, ejector admission flow adjustment heat tracing pipe access & exit temperature is adjusted to the accessible, is guaranteeing under the prerequisite that the trunk line medium does not congeal, reduces heat tracing pipe temperature, reduces the trunk line medium and gets the heat, reaches the effect that reduces the heat utilization, saves the steam quantity. Meanwhile, the high-temperature condensed water sent out to the condensed water pipe network of the system is prevented from generating a steam-water coexistence state, the heat of the condensed water is effectively recycled, the pipeline erosion is reduced, and the pipeline leakage and liquid impact phenomena are avoided.
Claims (10)
1. A heat tracing pipeline in petrochemical production comprises a steam input main pipe, steam input branch pipes, branch heat exchange loads, condensed water output branch pipes and a condensed water output main pipe,
the steam input main pipe is connected with each steam input branch pipe in parallel, each steam input branch pipe is respectively connected with the corresponding condensed water output branch pipe in series, a pipeline between each steam input branch pipe and each condensed water output branch pipe is used for tracing heat exchange load of each branch, and each condensed water output branch pipe is converged and connected with the condensed water output main pipe;
the method is characterized in that:
an ejector is additionally arranged between the steam input main pipe and each steam input branch pipe,
the steam input main pipe is led in and communicated with the nozzle input end of the ejector, the output end of the diffusion chamber of the ejector is connected with a mixed fluid pipeline,
the mixed fluid pipeline is connected in parallel and shunts each steam input branch pipe;
and each condensed water output branch pipe is connected with an injection fluid pipe in a converging manner, and the injection fluid pipe is connected to an injection fluid end of the ejector.
2. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
a mixing fluid line valve is arranged on the mixing fluid line.
3. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
each steam input branch pipe is respectively provided with a corresponding steam input branch pipe valve.
4. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
the upstream ends of the steam input branch pipes are introduced into a normally-stopped steam input heat-supplementing standby main pipe, a normally-stopped steam input heat-supplementing standby main pipe valve is configured on the normally-stopped steam input heat-supplementing standby main pipe, and the normally-stopped steam input heat-supplementing standby main pipe is connected in parallel to shunt the steam input branch pipes.
5. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
each condensed water output branch pipe is respectively provided with a drain valve corresponding to each path.
6. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
a condensed water output main pipe valve is arranged on the condensed water output main pipe.
7. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
and the injection fluid pipe is provided with an injection fluid pipe valve.
8. The heat tracing pipeline in petrochemical production according to claim 1, wherein:
a mixed fluid pipeline valve is arranged on the mixed fluid pipeline;
each steam input branch pipe is respectively provided with a corresponding steam input branch pipe valve;
the upstream end of each steam input branch pipe is introduced into a normally-stopped steam input heat-supplementing standby main pipe, a normally-stopped steam input heat-supplementing standby main pipe valve is configured on the normally-stopped steam input heat-supplementing standby main pipe, and the normally-stopped steam input heat-supplementing standby main pipe is connected in parallel to shunt each steam input branch pipe;
each condensed water output branch pipe is respectively provided with a corresponding drain valve;
a condensed water output main pipe valve is arranged on the condensed water output main pipe;
and the injection fluid pipe is provided with an injection fluid pipe valve.
9. The heat tracing pipeline in petrochemical production according to claim 8, wherein:
the flow of the injection fluid pipe valve is larger than that of the condensed water output main pipe valve.
10. The heat tracing pipeline in petrochemical production according to any one of claims 1 to 8, wherein: the ejector adopts an adjustable ejector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039726.1U CN214405635U (en) | 2021-01-07 | 2021-01-07 | Heat tracing pipeline in petrochemical production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039726.1U CN214405635U (en) | 2021-01-07 | 2021-01-07 | Heat tracing pipeline in petrochemical production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214405635U true CN214405635U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120039726.1U Active CN214405635U (en) | 2021-01-07 | 2021-01-07 | Heat tracing pipeline in petrochemical production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214405635U (en) |
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2021
- 2021-01-07 CN CN202120039726.1U patent/CN214405635U/en active Active
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Address after: 261061 middle section of Fushou East Street, high tech Industrial Development Zone, Weifang City, Shandong Province Patentee after: Hongrun Petrochemical (Weifang) Co.,Ltd. Address before: 261061 middle section of Fushou East Street, Weifang High tech Industrial Development Zone, Weifang City, Shandong Province Patentee before: SINOCHEM HONGRUN PETROCHEMICAL CO.,LTD. |