Low-quality steam self-balancing system

Abstract

When the low-quality steam self-balancing system is used, saturated steam generated by a saturated steam production group enters a saturated steam main pipe network, superheated steam generated by a sintering waste heat furnace enters a superheated steam main pipe network, and when the steam pressure in the saturated steam main pipe network is higher than a first preset value, the superheated steam in the superheated steam main pipe network is discharged. Saturated steam enters the superheated steam main pipe network through the steam connection pipeline, when the steam pressure in the saturated steam main pipe network is lower than that in the superheated steam main pipe network, the saturated steam connection pipeline is not conducted, and when the steam pressure in the saturated steam main pipe network is lower than a second preset value, the saturated steam connection pipeline is not conducted. The superheated steam enters the saturated steam main pipe network through the superheated connection pipeline, and when the steam pressure in the superheated steam main pipe network is smaller than the steam pressure in the saturated steam main pipe network, the superheated steam connection pipeline is not conducted. And the saturated steam main pipe network and the superheated steam main pipe network can automatically adjust the steam quantity, so that resource loss is avoided, and self-balance of low-quality steam in use is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of steam regulating systems, in particular to a low-quality steam self-balancing system. Background Art

[0002] In the production process of most steel joint enterprises, waste heat from converters, heating furnaces and other equipment is generally recovered to produce low-pressure saturated steam, and sintering waste heat is recovered to produce low-pressure superheated steam. Compared with medium-pressure steam and high-pressure steam with higher parameters, these steams have low parameters and low quality, and can be called low-quality steam. Saturated steam is generally used for production and domestic heating, and superheated steam is generally used for heating and low-parameter steam power generation.

[0003] Due to the blowing cycle, the saturated steam pressure, temperature and flow rate produced by the converter fluctuate violently, and contain a lot of water, which makes it difficult to meet the needs of users; the saturated steam produced by the heating furnace has stable pressure, temperature and flow rate, but the quantity is small, and its own consumption is small, so it needs to be transported over long distances to other users for use; the low-pressure superheated steam produced by using the waste heat of the sintering machine during the sintering and sintering material cooling process has relatively stable pressure, temperature and flow rate, and relatively high quality, but its own consumption is small, and it needs to be transported to other users for use.

[0004] Due to different steam qualities, different steam pipe networks are set up, such as converter saturated steam pipe network, heating furnace saturated steam pipe network, sintering waste heat steam pipe network, etc. The pipe network system is complex and it is difficult to balance the production and use of steam. Due to seasonal changes, production fluctuations and unbalanced use, steam is released or insufficient, which not only causes resource loss but also affects production.

[0005] Therefore, how to achieve self-balancing use of low-quality steam is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a low-quality steam self-balancing system to achieve self-balancing of low-quality steam usage;

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A low-quality steam self-balancing system comprises a saturated steam production group, a sintering waste heat furnace, a saturated steam main network, a superheated steam main network, a saturated steam communication pipeline, a superheated steam communication pipeline, a first pressure measuring assembly and a second pressure measuring assembly, wherein:

[0009] The saturated steam production group is connected to the saturated steam main network and is used to transport the produced saturated steam to the saturated steam main network;

[0010] The sintering waste heat furnace is connected to the superheated steam main network and is used to transport the produced superheated steam to the superheated steam main network;

[0011] The first pressure measuring assembly is arranged on the saturated steam main network and is used to detect the steam pressure of the saturated steam main network;

[0012] The second pressure measuring assembly is arranged in the superheated steam main network and is used to detect the steam pressure of the superheated steam main network;

[0013] The input end of the saturated steam communication pipeline is connected to the saturated steam main network, and the output end of the saturated steam communication pipeline is connected to the superheated steam main network;

[0014] The input end of the superheated steam communication pipeline is connected to the superheated steam main network, and the output end of the superheated steam communication pipeline is connected to the saturated steam main network;

[0015] When the monitoring value of the first pressure measuring component is higher than the first preset value, the saturated steam communication pipeline is connected; when the monitoring value of the first pressure measuring component is less than the monitoring value of the second pressure measuring component, the saturated steam communication pipeline is not connected; when the monitoring value of the first pressure measuring component is lower than the second preset value, the superheated steam communication pipeline is connected; when the monitoring value of the second pressure measuring component is less than the monitoring value of the first pressure measuring component, the superheated steam communication pipeline is not connected.

[0016] Optionally, in the above-mentioned low-quality steam self-balancing system, the saturated steam production group includes a converter waste heat furnace, a heating furnace waste heat furnace and a heat accumulator, the converter waste heat furnace and the heating furnace waste heat furnace are connected in parallel to the saturated steam main network, for providing saturated steam to the saturated steam main network, and the heat accumulator is arranged between the converter waste heat furnace and the saturated steam main network, for stabilizing the saturated steam generated by the converter waste heat furnace.

[0017] Optionally, the low-quality steam self-balancing system further includes a generator set, and the generator set is connected to the superheated steam main network.

[0018] Optionally, in the above-mentioned low-quality steam self-balancing system, the first pressure measuring assembly includes a first pressure gauge valve and a first steam pressure gauge, and the first pressure gauge valve and the first steam pressure gauge are sequentially connected to the saturated steam main network;

[0019] The second pressure measuring assembly includes a second pressure gauge valve and a second steam pressure gauge, and the second pressure gauge valve and the second steam pressure gauge are sequentially connected to the superheated steam main network.

[0020] Optionally, the above-mentioned low-quality steam self-balancing system further includes a steam user end and a steam valve, wherein the steam valve and the steam user end are sequentially connected to the saturated steam main network and are arranged in parallel with the heating furnace waste heat boiler.

[0021] Optionally, in the above-mentioned low-quality steam self-balancing system, a saturated steam communication gate, a steam-water separator and a steam superheater are arranged in sequence between the input end and the output end of the saturated steam communication pipeline, the saturated steam communication gate is used to open or close the saturated steam communication pipeline, the steam-water separator is used to separate the gas and liquid in the saturated steam, and the steam superheater is used to heat the saturated steam.

[0022] Optionally, in the above-mentioned low-quality steam self-balancing system, a superheated steam communication door is arranged between the input end and the output end of the superheated steam communication pipeline, and the superheated steam communication door is used to open or close the superheated steam communication pipeline.

[0023] Optionally, the low-quality steam self-balancing system further includes a steam inlet valve and a steam inlet regulating valve, and the steam inlet valve and the steam inlet regulating valve are arranged close to the steam inlet end of the generator set.

[0024] Optionally, in the above-mentioned low-quality steam self-balancing system, a first regulating gate is arranged on the saturated steam connecting pipe, and the first regulating gate is used to adjust the amount of saturated steam entering the superheated steam connecting pipe, and a second regulating gate is arranged on the superheated steam connecting pipe, and the second regulating gate is used to adjust the amount of superheated steam entering the saturated steam connecting pipe.

[0025] Optionally, in the above-mentioned low-quality steam self-balancing system, a first check valve is arranged between the input end and the output end of the saturated steam communication pipeline;

[0026] A second check valve is arranged between the input end and the output end of the superheated steam communication pipeline.

[0027] The low-quality steam self-balancing system provided by the utility model, when in use, the saturated steam generated by the saturated steam production group enters the saturated steam main network, is distributed to the steam user end, and the surplus saturated steam is superheated and sent to the superheated steam main network, the superheated steam generated by the sintering waste heat furnace enters the superheated steam main network, when the steam pressure in the saturated steam main network is higher than the first preset value, the saturated steam enters the superheated steam main network through the steam communication pipeline, when the steam pressure in the saturated steam main network is less than the steam pressure in the superheated steam main network, the saturated steam communication pipeline is not conductive, when the steam pressure in the saturated steam main network is lower than the second preset value, the superheated steam enters the saturated steam main network through the superheated communication pipeline, when the steam pressure in the superheated steam main network is less than the steam pressure in the saturated steam main network, the superheated steam communication pipeline is not conductive, the superheated steam main network can balance the pressure of the saturated steam main network, and the surplus part is used for power generation by the generator set. In the above-mentioned adjustment process, the saturated steam main network and the superheated steam main network can automatically adjust the steam volume, thereby avoiding resource loss and realizing the self-balancing of the use of low-quality steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a low-quality steam self-balancing system disclosed in an embodiment of the utility model;

[0030] Among them: 1-converter waste heat furnace, 2-diffuser door, 3-valve, 4-heat accumulator, 5-valve, 6-heating furnace waste heat furnace, 7-diffuser door, 8-valve, 9-other waste heat furnace, 10-diffuser door, 11-valve, 12-steam user end, 13-steam valve, 14-saturated steam main network, 15-sintering waste heat furnace, 16-diffuser door, 17-valve, 18-superheated steam main network, 19-steam inlet valve, 20-steam inlet regulating valve, 21-power generation Unit, 22-first pressure gauge valve, 23-first steam pressure gauge, 24-second pressure gauge valve, 25-second steam pressure gauge, 26-saturated steam connecting pipeline, 27-saturated steam connecting door, 28-first regulating door, 29-steam-water separator, 30-valve, 31-steam superheater, 32-valve, 33-first check valve, 34-superheated steam connecting pipeline, 35-superheated steam connecting door, 36-second regulating door, 37-second check valve. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making novel work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] like Figure 1 As shown, the low-quality steam self-balancing system disclosed in the utility model includes a saturated steam production group, a sintering waste heat furnace 15, a saturated steam main network 14, a superheated steam main network 18, a saturated steam communication pipeline 26, a superheated steam communication pipeline 34, a first pressure measuring component and a second pressure measuring component, wherein the saturated steam production group is connected to the saturated steam main network 14, and is used to transport the produced saturated steam to the saturated steam main network 14, the sintering waste heat furnace 15 is connected to the superheated steam main network 18, and is used to transport the produced superheated steam to the superheated steam main network 18, the first pressure measuring component is arranged on the saturated steam main network 14, and is used to detect the steam pressure of the saturated steam main network 14, and the second pressure measuring component is arranged on the superheated steam main network 18, and is used to detect the steam pressure of the superheated steam main network 18. Steam pressure, the input end of the saturated steam communication pipe 26 is connected to the saturated steam main network 14, the output end of the saturated steam communication pipe 26 is connected to the superheated steam main network 18, the input end of the superheated steam communication pipe 34 is connected to the superheated steam main network 18, and the output end of the superheated steam communication pipe 34 is connected to the saturated steam main network 14. When the monitoring value of the first pressure measuring component is higher than the first preset value, the saturated steam communication pipe 26 is connected; when the monitoring value of the first pressure measuring component is less than the monitoring value of the second pressure measuring component, the saturated steam communication pipe 26 is not connected; when the monitoring value of the first pressure measuring component is lower than the second preset value, the superheated steam communication pipe 34 is connected; when the monitoring value of the second pressure measuring component is less than the monitoring value of the first pressure measuring component, the superheated steam communication pipe 34 is not connected.

[0034] Specifically, the low-quality steam self-balancing system can be used for heating, cooling, power generation, etc. to achieve self-balancing of low-quality steam production and use.

[0035] The low-quality steam self-balancing system provided by the utility model, when in use, the saturated steam generated by the saturated steam production group enters the saturated steam main network 14, and the superheated steam generated by the sintering waste heat furnace 15 enters the superheated steam main network 18. When the steam pressure in the saturated steam main network 14 is higher than the first preset value, the saturated steam enters the superheated steam main network 18 through the steam communication pipeline. When the steam pressure in the saturated steam main network 14 is lower than the steam pressure in the superheated steam main network 18, the saturated steam communication pipeline 26 is not conductive. When the steam pressure in the saturated steam main network 14 is lower than the second preset value, the superheated steam enters the saturated steam main network 14 through the superheated communication pipeline. When the steam pressure in the superheated steam main network 18 is lower than the steam pressure in the saturated steam main network 14, the superheated steam communication pipeline 34 is not conductive. In the above-mentioned adjustment process, the saturated steam main network 14 and the superheated steam main network 18 can automatically adjust the steam volume, thereby avoiding resource loss and realizing the self-balancing of the use of low-quality steam.

[0036] In order to optimize the above technical solution, the saturated steam production group includes a converter waste heat furnace 1, a heating furnace waste heat furnace 6 and a heat accumulator 4. The converter waste heat furnace 1 and the heating furnace waste heat furnace 6 are connected in parallel to a saturated steam main network 14 for providing saturated steam to the saturated steam main network 14. The heat accumulator 4 is arranged between the converter waste heat furnace 1 and the saturated steam main network 14 for stabilizing the saturated steam generated by the converter waste heat furnace 1. Specifically, the converter waste heat furnace 1 is connected with a release door 2 and a valve 3, the heating furnace waste heat furnace 6 is connected with a release door 7 and a valve 8, and the sintering waste heat furnace 1 is connected with a release door 16 and a valve 17. When the steam pressure in the converter waste heat furnace 1 and / or the heating furnace waste heat furnace 6 and / or the sintering waste heat furnace 15 reaches the release value, the release door 2 and / or the release door 7 and / or the release door 16 are opened, and the saturated steam in the converter waste heat furnace 1 and the heating furnace waste heat furnace 6 is partially released, and the superheated steam in the sintering waste heat furnace 15 is partially released. Under normal circumstances, the saturated steam in the converter waste heat furnace 1 and the heating furnace waste heat furnace 6 is merged into the saturated steam main network 14, and the superheated steam in the sintering waste heat furnace 15 enters the superheated steam main network 18.

[0037] Specifically, the saturated steam generated by the converter waste heat furnace 1 needs to pass through the heat accumulator 4 before entering the saturated steam main network 14. The heat accumulator 4 can stabilize the saturated steam output flow, pressure and temperature of the converter waste heat furnace 1. Specifically, the saturated steam production group can also include other waste heat furnaces 9, and the other waste heat furnaces 9 are connected in parallel with the converter waste heat furnace 1 and the heating furnace waste heat furnace 6, and the other waste heat furnaces 9 are connected with a discharge door 10 and a valve 11.

[0038] When in use, the saturated steam generated by the converter waste heat furnace 1 is stabilized by the heat accumulator 4 and then input into the saturated steam main network 14, the saturated steam generated by the heating furnace waste heat furnace 6 and other waste heat furnaces 9 are incorporated into the saturated steam main network 14, and the superheated steam in the sintering waste heat furnace 15 is input into the superheated steam main network 18, so as to realize the effective utilization of low-quality steam.

[0039] In order to optimize the above technical solution, it also includes a generator set 21, which is connected to the superheated steam main network 18. Specifically, the superheated steam generated by the superheated steam main network 18 can balance the pressure of the saturated steam main network, and the surplus can be used for the generator set to generate electricity. The generator set 21 can be a steam turbine generator set 21. The steam turbine generator set 21 has the ability to consume all superheated steam plus the maximum value of saturated steam emission throughout the year, and has a load adjustment capacity of 30% to 110%, and can autonomously adjust the load according to the change of steam pressure. When in use, the superheated steam in the superheated steam main network 18 enters the generator set 21, thereby realizing steam power generation and achieving effective utilization of low-quality steam.

[0040] In order to optimize the above technical solution, the first pressure measuring assembly includes a first pressure gauge valve 22 and a first steam pressure gauge 23, and the first pressure gauge valve 22 and the first steam pressure gauge 23 are connected to the saturated steam main network 14 in sequence;

[0041] The second pressure measuring assembly includes a second pressure gauge valve 24 and a second steam pressure gauge 25 , and the second pressure gauge valve 24 and the second steam pressure gauge 25 are connected to the superheated steam main network 18 in sequence.

[0042] Specifically, when the first pressure gauge valve 22 is in an open state, saturated steam can enter the first steam pressure gauge 23, and the first steam pressure gauge 23 monitors the steam pressure in the saturated steam main network 14. When the second pressure gauge valve 24 is in an open state, superheated steam can enter the second steam pressure gauge 25, and the second steam pressure gauge 25 detects the steam pressure in the superheated steam main network 18. When in use, when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is high to a certain value, which may cause steam release, the saturated steam communication pipeline 26 is connected, and part of the saturated steam enters the superheated steam main network 18, thereby reducing the steam pressure of the saturated steam main network 14 and preventing the steam of the saturated steam production group from being released. Such an arrangement can effectively detect the internal pressure of the saturated steam main network 14 and the superheated steam main network 18, and automatically adjust according to the detection results, reduce steam release when the saturated steam production is greater than the usage, and use superheated steam to supplement the shortage of saturated steam production when it is less than the usage, so as to achieve self-balancing of low-quality steam and stable supply of steam.

[0043] In order to optimize the above technical solution, the low-quality steam self-balancing system also includes a steam user end 12 and a steam valve 13. The steam valve 13 and the steam user end 12 are connected to the saturated steam main network 14 in sequence, and are arranged in parallel with the heating furnace waste heat boiler 6. Specifically, the saturated steam inside the saturated steam main network 14 is distributed to the steam user end 12 for use after passing through the steam valve 13, and the surplus saturated steam can be sent to the superheated steam main network 18 after being heated for power generation by the generator set 21. When in use, when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is as low as a certain value, which may cause insufficient usage of the steam user end 12, the superheated steam communication pipeline 34 is turned on, and part of the superheated steam enters the saturated steam main network 14 to meet the usage demand of the steam user end 12. Such an arrangement reduces the steam emission when the saturated steam production is greater than the usage, and improves the utilization rate of low-quality steam.

[0044] In order to optimize the above technical solution, a saturated steam communication gate 27, a steam-water separator 29 and a steam superheater 31 are arranged in sequence between the input end and the output end of the saturated steam communication pipeline 26. The saturated steam communication gate 27 is used to open or close the saturated steam communication pipeline 26, the steam-water separator 29 is used to separate the gas and liquid in the saturated steam, and the steam superheater 31 is used to heat the saturated steam. Specifically, the steam superheater 31 is used to heat the saturated steam into superheated steam. Specifically, a valve 30 is arranged upstream of the steam superheater 31, and a valve 32 is arranged downstream. The valve 30 is used to control the saturated steam to enter the steam superheater 31, and the valve 32 is used to control the superheated steam to leave the steam superheater 31. During use, when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is as high as a certain value, which may cause steam release, the saturated steam communication door 27 on the saturated steam communication pipeline 26 automatically opens, and the saturated steam enters the steam-water separator 29 for dehydration, and the dehydrated steam enters the steam superheater 31 for superheating, and the superheated steam passes through the valve into the superheated steam main network 18, thereby reducing the pressure of the saturated steam main network 14 and preventing steam from being released; when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is equal to or slightly lower than the pressure of the superheated steam main network 18 detected by the second steam pressure gauge 25, the saturated steam communication door 27 automatically closes.

[0045] In order to optimize the above technical solution, an overheated steam communication gate 35 is arranged between the input end and the output end of the overheated steam communication pipeline 34, and the overheated steam communication gate 35 is used to open or close the overheated steam communication pipeline 34. When in use, when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is as low as a certain value, which may cause insufficient usage of the steam user end 12, the overheated steam communication gate on the overheated steam communication pipeline automatically opens, and the superheated steam enters the saturated steam main network 14, and the pressure of the saturated steam main network 14 is appropriately increased, thereby meeting the usage requirements of the steam user end 12; when the first steam pressure gauge 23 detects that the pressure of the saturated steam main network 14 is equal to or slightly higher than the pressure of the overheated steam main network 18 detected by the second steam pressure gauge 25, the overheated steam communication gate 35 automatically closes.

[0046] In the above process, the steam entering the superheated steam main network 18 from the saturated steam connecting pipe 26 is heated to superheated steam, and the saturated steam in the saturated steam main network 14 and the superheated steam in the superheated steam main network 18 can be interchanged through different pipelines, thereby achieving self-balancing of the use of low-quality steam and a stable supply of steam.

[0047] In order to optimize the above technical solution, a steam inlet valve 19 and a steam inlet regulating valve 20 are also included, and the steam inlet valve 19 and the steam inlet regulating valve 20 are arranged near the steam inlet end of the generator set 21. Specifically, the steam inlet regulating valve 20 is used to adjust the amount of steam entering the generator set 21, and the steam inlet valve 19 is used to control the superheated steam to enter the generator set 21. When in use, the superheated steam enters the steam turbine generator set 21 through the steam inlet valve 19 and the steam inlet regulating valve 20 to generate electricity, so as to achieve effective utilization of the superheated steam.

[0048] In order to optimize the above technical solution, a first regulating gate 28 is arranged on the saturated steam communication pipeline 26, and the first regulating gate 28 is used to adjust the amount of saturated steam entering the superheated steam communication pipeline 34. A second regulating gate 36 is arranged on the superheated steam communication pipeline 34, and the second regulating gate 36 is used to adjust the amount of superheated steam entering the saturated steam communication pipeline 26. Specifically, the first regulating gate 28 is arranged between the saturated steam communication gate 27 and the steam-water separator 29, and is used to adjust the amount of steam entering the superheated steam main network 18 from the saturated steam main network 14, and the second regulating gate 36 is arranged between the superheated steam communication gate 35 and the saturated steam main network 14, and is used to adjust the amount of steam entering the saturated steam main network 14 from the superheated steam main network 18. Furthermore, the design operating pressure of the superheated steam main network 18 and the saturated steam main network 14 should be the same value, and fluctuations are allowed within a certain range, so that the automatic adjustment of the low-quality steam self-balancing system is more flexible.

[0049] In order to optimize the above technical solution, a first check valve 33 is arranged between the input end and the output end of the saturated steam communication pipeline 26;

[0050] A second check valve 37 is arranged between the input end and the output end of the superheated steam communication pipe 34 .

[0051] Specifically, the first check valve 33 is arranged at the output end of the saturated steam communication pipeline 26 to prevent the superheated steam from flowing back into the saturated steam main network 14, and the second check valve 37 is arranged at the output end of the superheated steam communication pipeline 34 to prevent the saturated steam from flowing back into the superheated steam main network 18. By arranging the first check valve 33 and the second check valve 37, the safety, efficiency and stability of the steam supply of the low-quality steam self-balancing system can be improved.

[0052] The advantages of the utility model are:

[0053] (1) Achieved self-balancing of low-quality steam usage;

[0054] (2) Reduce steam emission when saturated steam production exceeds usage;

[0055] (3) Effective utilization of low-quality steam is achieved.

[0056] It should be noted that the low-quality steam self-balancing system provided by the utility model can be used in the technical field of steam regulation systems or other fields. Other fields are any fields other than the technical field of steam regulation systems. The above is only an example and does not limit the application field of the low-quality steam self-balancing system provided by the utility model.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A low-quality steam self-balancing system, characterized in that: It includes a saturated steam production group, a sintering waste heat furnace, a saturated steam main network, a superheated steam main network, a saturated steam communication pipeline, a superheated steam communication pipeline, a first pressure measuring assembly and a second pressure measuring assembly, wherein: The saturated steam production group is connected to the saturated steam main network and is used to transport the produced saturated steam to the saturated steam main network; The sintering waste heat furnace is connected to the superheated steam main network and is used to transport the produced superheated steam to the superheated steam main network; The first pressure measuring assembly is arranged on the saturated steam main network and is used to detect the steam pressure of the saturated steam main network; The second pressure measuring assembly is arranged in the superheated steam main network and is used to detect the steam pressure of the superheated steam main network; The input end of the saturated steam communication pipeline is connected to the saturated steam main network, and the output end of the saturated steam communication pipeline is connected to the superheated steam main network; The input end of the superheated steam communication pipeline is connected to the superheated steam main network, and the output end of the superheated steam communication pipeline is connected to the saturated steam main network; When the monitoring value of the first pressure measuring component is higher than the first preset value, the saturated steam communication pipeline is connected; when the monitoring value of the first pressure measuring component is less than the monitoring value of the second pressure measuring component, the saturated steam communication pipeline is not connected; when the monitoring value of the first pressure measuring component is lower than the second preset value, the superheated steam communication pipeline is connected; when the monitoring value of the second pressure measuring component is less than the monitoring value of the first pressure measuring component, the superheated steam communication pipeline is not connected.

2. The low-quality steam self-balancing system according to claim 1, characterized in that: The saturated steam production group includes a converter waste heat furnace, a heating furnace waste heat furnace and a heat accumulator. The converter waste heat furnace and the heating furnace waste heat furnace are connected in parallel to the saturated steam main network and are used to provide saturated steam to the saturated steam main network. The heat accumulator is arranged between the converter waste heat furnace and the saturated steam main network and is used to stabilize the saturated steam generated by the converter waste heat furnace.

3. The low-quality steam self-balancing system according to claim 2, characterized in that: It also includes a generator set, which is connected to the superheated steam main network.

4. The low-quality steam self-balancing system according to claim 1, characterized in that: The first pressure measuring assembly comprises a first pressure gauge valve and a first steam pressure gauge, and the first pressure gauge valve and the first steam pressure gauge are sequentially connected to the saturated steam main network; The second pressure measuring assembly includes a second pressure gauge valve and a second steam pressure gauge, and the second pressure gauge valve and the second steam pressure gauge are sequentially connected to the superheated steam main network.

5. The low-quality steam self-balancing system according to claim 2, characterized in that: It also includes a steam user end and a steam valve. The steam valve and the steam user end are connected to the saturated steam main network in sequence and are arranged in parallel with the heating furnace waste heat furnace.

6. The low-quality steam self-balancing system according to claim 1, characterized in that: A saturated steam communication gate, a steam-water separator and a steam superheater are arranged in sequence between the input end and the output end of the saturated steam communication pipeline. The saturated steam communication gate is used to open or close the saturated steam communication pipeline, the steam-water separator is used to separate the gas and liquid in the saturated steam, and the steam superheater is used to heat the saturated steam.

7. The low-quality steam self-balancing system according to claim 6, characterized in that: A superheated steam communication door is arranged between the input end and the output end of the superheated steam communication pipeline, and the superheated steam communication door is used to open or close the superheated steam communication pipeline.

8. The low-quality steam self-balancing system according to claim 3, characterized in that: It also includes a steam inlet valve and a steam inlet regulating valve, and the steam inlet valve and the steam inlet regulating valve are arranged close to the steam inlet end of the generator set.

9. The low-quality steam self-balancing system according to any one of claims 1 to 8, characterized in that: A first regulating gate is arranged on the saturated steam communication pipeline, and the first regulating gate is used to adjust the amount of saturated steam entering the superheated steam communication pipeline. A second regulating gate is arranged on the superheated steam communication pipeline, and the second regulating gate is used to adjust the amount of superheated steam entering the saturated steam communication pipeline.

10. The low-quality steam self-balancing system according to claim 7, characterized in that: A first check valve is arranged between the input end and the output end of the saturated steam communication pipeline; A second check valve is arranged between the input end and the output end of the superheated steam communication pipeline.

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