A steam pipe superheating and pressurizing system

Abstract

The application provides a novel steam pipeline temperature and pressure increasing system, which meets the steam parameter requirements of each user in a district and realizes precise steam supply without increasing the temperature and pressure parameters of the steam supply pipeline outlet of a heat source point as a whole. The system comprises a steam supply pipeline; temperature and pressure increasing assemblies are arranged along the steam supply pipeline; the pipeline of each temperature and pressure increasing assembly comprises a steam bypass pipeline, a steam pressure reducing pipe and a steam mixed supply pipe which are arranged along the steam supply pipeline in sequence; a length direction interval is left between the steam bypass pipeline and the steam pressure reducing pipe and between the steam pressure reducing pipe and the steam mixed supply pipe; each temperature and pressure increasing assembly further comprises a heat exchanger, a steam collecting tank, a steam storage tank, a piston and a boiler.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steam pipeline systems, in particular to a novel steam pipeline temperature and pressure increasing system. BACKGROUND

[0002] With urban planning, economic development, industrial adjustment, and changes in the structure of heat user enterprises, the heat load of each heat supply area develops unevenly, resulting in asymmetric development of the original heat supply facilities. The existing steam main pipeline has different output temperatures and pressures corresponding to different regional user steam equipment. When the temperature and pressure cannot meet the high-temperature and high-pressure steam demand of the users, the existing technology needs to raise the steam parameters at the outlet of the heat source point as a whole, which requires high parameters at the heat source point and increases the pipe loss of the heat supply system. In actual use, the number of users with high-temperature and high-pressure demand is relatively small, and for most users with low-temperature and low-pressure steam, additional temperature and pressure reducing equipment is needed, which increases the equipment investment cost of the heat supply system. SUMMARY

[0003] To solve the above problems, the present application provides a novel steam pipeline temperature and pressure increasing system, which meets the high-temperature and high-pressure steam demand of users in the area without raising the temperature and pressure parameters at the outlet of the steam heat supply pipeline of the heat source point as a whole, achieves precise steam supply to different users, and supplements the main heat supply pipeline with the excess steam generated by the system after heating, thereby achieving energy saving and emission reduction, reducing the condensate content in the pipeline, and avoiding water hammer accidents.

[0004] A novel steam pipeline temperature and pressure increasing system, characterized in that it comprises a steam heat supply pipeline;

[0005] Corresponding temperature and pressure increasing assemblies are arranged along the steam heat supply pipeline corresponding to the positions of user steam equipment with high-temperature and high-pressure demand. The pipeline of each temperature and pressure increasing assembly comprises a steam bypass pipeline, a steam pressure reducing pipe, and a steam mixed supply pipe arranged in sequence along the steam heat supply pipeline. Lengthwise intervals are left between the steam bypass pipeline and the steam pressure reducing pipe, and between the steam pressure reducing pipe and the steam mixed supply pipe.

[0006] Each temperature and pressure increasing assembly further comprises a heat exchanger, a steam collecting tank, a steam storage tank, a piston, and a boiler.

[0007] The steam bypass pipeline is connected to the first medium inlet of the heat exchanger, and then flows from the first medium outlet into the inlet of the steam collecting tank. The outlet of the steam collecting tank is connected to the inlet end of the piston, the outlet end of the piston is connected to the inlet end of the steam storage tank, and the outlet end of the steam storage tank is connected to the user steam equipment through a pipeline.

[0008] The steam pressure reducing pipe is connected with the second medium inlet of the heat exchanger, and then the steam flows from the second medium outlet to the steam inlet end of the boiler, and the steam outlet end of the boiler is supplemented with steam into the steam heating pipe through the steam mixing pipe;

[0009] The steam heating pipe between the steam pressure reducing pipe and the steam mixing pipe is provided with a steam mixing valve group.

[0010] It is further characterized in that:

[0011] The steam bypass pipe is provided with a bypass valve group, a temperature sensor and a pressure sensor;

[0012] The bypass valve group comprises a bypass manual valve, a bypass electric regulating valve and a bypass manual regulating valve installed in sequence;

[0013] The steam pressure reducing pipe is provided with a pressure reducing valve group, a temperature sensor and a pressure sensor;

[0014] The pressure reducing valve group comprises a pressure reducing manual valve, a pressure reducing electric valve and a pressure reducing manual regulating valve installed in sequence;

[0015] The steam mixing valve group comprises a mixing manual valve, a mixing electric regulating valve and a mixing manual regulating valve arranged in sequence;

[0016] The bypass electric regulating valve, the pressure reducing electric valve, the mixing electric regulating valve and the piston are automatically started and regulated within a set temperature and pressure range.

[0017] After the system of the application is used, part of the heating steam in the steam heating pipe is connected to the first medium inlet of the heat exchanger through the steam bypass pipe, and then flows out from the first medium outlet into the steam collecting tank after being heated by another part of the steam flowing out of the steam pressure reducing pipe, the steam collecting tank reaches a certain high temperature and high pressure, and then enters the inlet end of the piston, the piston is opened when the set temperature and pressure are reached, the high temperature and high pressure steam flows into the steam storage tank from the outlet end of the piston, and then the steam storage tank supplies heat to the user equipment with high temperature and high pressure demand according to the user demand, the steam flowing out of the steam pressure reducing pipe flows out after being heated by the heat exchanger, and then flows into the steam heating pipe behind the corresponding temperature and pressure increasing assembly of the steam heating pipe, so that the steam heating pipe behind meets the heating demand of the user in the rear section; without increasing the temperature and pressure parameters of the steam heating pipe outlet of the whole heat source point, the system meets the steam parameter requirements of each user in the area, achieves precise steam supply for different users, and the excess steam generated by the system is heated and supplemented to the heating main pipe, which reduces the condensate content in the pipe and avoids water hammer accidents while saving energy and reducing emissions. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1Arrangement diagram of specific embodiments of the present application;

[0019] The names corresponding to the serial numbers in the figure are as follows:

[0020] Steam heating pipeline 1, steam bypass pipeline 2, steam pressure reducing pipeline 3, bypass valve group 4, temperature sensor 5, pressure sensor 6, bypass manual valve 7, bypass electric regulating valve 8, bypass manual regulating valve 9, bypass standby valve 10, pressure reducing valve group 11, steam mixed supply pipeline 12, heat exchanger 13, steam loop pipeline 14, steam mixed supply valve group 15, steam collecting tank 16, piston 17, steam storage tank 18, user steam equipment 19, boiler 20, pressure reducing manual valve 21, pressure reducing electric valve 22, pressure reducing manual regulating valve 23, pressure reducing standby valve 24, trap 25, mixed supply manual valve 26, mixed supply electric regulating valve 27, mixed supply manual regulating valve 28, mixed supply standby valve 29. DETAILED DESCRIPTION

[0021] A new steam pipeline temperature and pressure increasing system, see Figure 1 , which comprises a steam heating pipeline 1; along the steam heating pipeline 1, corresponding to the position of the user steam equipment 19 with high temperature and high pressure demand, corresponding temperature and pressure increasing components are arranged, the pipeline of each temperature and pressure increasing component comprises steam bypass pipeline 2, steam pressure reducing pipeline 3 and steam mixed supply pipeline 12 arranged along the steam heating pipeline 1 in sequence, lengthwise intervals are left between the steam bypass pipeline 2 and the steam pressure reducing pipeline 3, and between the steam pressure reducing pipeline 3 and the steam mixed supply pipeline 12;

[0022] Each temperature and pressure increasing component further comprises a heat exchanger 13, a steam collecting tank 16, a steam storage tank 18, a piston 17 and a boiler 20;

[0023] The steam bypass pipeline 2 connects the first medium inlet of the heat exchanger 13, then flows into the inlet of the steam collecting tank 16 from the first medium outlet, the outlet of the steam collecting tank 16 connects the inlet end of the piston 17, the outlet end of the piston 17 connects the inlet end of the steam storage tank 18, and the outlet end of the steam storage tank 18 is connected to the user steam equipment 19 through a pipeline;

[0024] The steam pressure reducing pipeline 3 connects the second medium inlet of the heat exchanger 13, then flows into the steam inlet end of the boiler 20 from the second medium outlet through the steam loop pipeline 14, and the steam outlet end of the boiler 20 supplements steam into the steam heating pipeline 1 through the steam mixed supply pipeline 12;

[0025] The steam mixed supply valve group 15 is arranged between the steam pressure reducing pipeline 3 and the steam mixed supply pipeline 12 in the steam heating pipeline.

[0026] In specific implementation, the steam bypass pipeline 2 is provided with a bypass valve group 4, a temperature sensor 5 and a pressure sensor 6; the bypass valve group 4 includes a bypass manual valve 7, a bypass electric regulating valve 8 and a bypass manual regulating valve 9 installed in sequence; a branch line pipe is connected in parallel to the pipeline in front of the bypass manual valve 7 and behind the bypass manual regulating valve 9, and a bypass standby valve 10 is installed on the branch line pipe;

[0027] The steam pressure reduction pipeline 3 is provided with a pressure reduction valve group 11, a temperature sensor 5 and a pressure sensor 6; the pressure reduction valve group 11 includes a pressure reduction manual valve 21, a pressure reduction electric valve 22 and a pressure reduction manual regulating valve 23 installed in sequence; a branch line pipe is connected in parallel to the pipeline in front of the pressure reduction manual valve 21 and behind the pressure reduction manual regulating valve 23, and a pressure reduction standby valve 24 is installed on the branch line pipe;

[0028] The steam mixed supply valve group 15 includes a mixed supply manual valve 26, a mixed supply electric regulating valve 27 and a mixed supply manual regulating valve 28 arranged in sequence; a branch line pipe is connected in parallel to the pipeline in front of the mixed supply manual valve 26 and behind the mixed supply manual regulating valve 28, and a mixed supply standby valve 29 is installed on the branch line pipe;

[0029] The bypass electric regulating valve 8, the pressure reduction electric valve 22, the mixed supply electric regulating valve 27 and the piston 17 are automatically started and stopped and regulated by setting temperature and pressure ranges.

[0030] In specific implementation, the steam collecting tank 16 and the steam storage tank 18 are both provided with a temperature sensor 5 and a pressure sensor 6 above the inner cavities thereof, and a trap 25 is installed below the inner cavity of the steam storage tank 18, which is used to drain condensed water out of the system.

[0031] The working principle is as follows: a part of the heating steam in the steam heating pipeline is connected to the first medium inlet of the heat exchanger through the steam bypass pipeline, and then flows out from the first medium outlet into the steam collecting tank after being heated by another part of the steam flowing out from the steam pressure reduction pipeline; the steam collecting tank reaches a certain high temperature and high pressure, and then enters the inlet end of the piston; when the set temperature and pressure are reached, the piston is opened; the high temperature and high pressure steam flows into the steam storage tank from the outlet end of the piston; then the steam storage tank supplies heat to the user steam equipment according to the user's demand; the steam flowing out from the steam pressure reduction pipeline flows out after being heated by the heat exchanger, and then flows into the steam heating pipeline again after being heated by the boiler; the steam temperature and pressure are regulated by the bypass electric regulating valve, the pressure reduction electric valve, the mixed supply electric regulating valve and the piston, so as to meet the steam supply of users with high temperature and high pressure requirements and meet the steam parameter requirements of users in the area; precise heating is realized to achieve precise steam supply for different users; the excess steam generated by the system is heated and supplemented to the heating main pipeline, so as to save energy and reduce emissions, reduce the content of condensed water in the pipeline and avoid water hammer accidents.

[0032] It will be obvious to a person skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims to the identity of the reference signs therein.

[0033] Furthermore, it should be understood that although the description is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A steam pipeline heating and pressurization system, characterized in that, It includes steam heating pipes; Along the steam heating pipeline, corresponding heating and pressurizing components are arranged at the locations of user steam equipment that require high temperature and high pressure. Each heating and pressurizing component includes a steam bypass pipeline, a steam pressure reducing pipeline, and a steam mixing pipeline arranged sequentially along the steam heating pipeline. There is a lengthwise interval between the steam bypass pipeline and the steam pressure reducing pipeline, and between the steam pressure reducing pipeline and the steam mixing pipeline. Each heating and pressurizing assembly also includes a heat exchanger, a steam collection tank, a steam storage tank, a piston, and a boiler; The steam bypass pipeline is connected to the first medium inlet of the heat exchanger and flows into the inlet of the steam collecting tank from the first medium outlet. The outlet of the steam collecting tank is connected to the inlet end of the piston, the outlet end of the piston is connected to the inlet end of the steam storage tank, and the outlet end of the steam storage tank is connected to the user's steam-using equipment through a pipeline. The steam pressure reducing pipe is connected to the second medium inlet of the heat exchanger, and then flows from the second medium outlet to the steam inlet of the boiler. The steam outlet of the boiler is supplemented with steam to the steam heating pipeline through the steam mixing pipe. The steam heating pipeline between the steam pressure reducing pipe and the steam mixing pipe is equipped with a steam mixing valve group. The steam bypass pipeline is equipped with a bypass valve group, a temperature sensor, and a pressure sensor. The bypass valve group includes a bypass manual valve, a bypass electric regulating valve, and a bypass manual regulating valve installed in sequence. The steam pressure reducing pipe is equipped with a pressure reducing valve group, a temperature sensor, and a pressure sensor. The pressure reducing valve group includes a pressure reducing manual valve, a pressure reducing electric valve, and a pressure reducing manual regulating valve installed in sequence. The steam mixed supply valve group includes a mixed supply manual valve, a mixed supply electric regulating valve and a mixed supply manual regulating valve arranged in sequence. The bypass electric regulating valve, pressure reducing electric valve, hybrid electric regulating valve, and piston are all automatically started, stopped, and regulated within a set temperature and pressure range.

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