System for heating heating water by utilizing rich medium-pressure steam

Abstract

The utility model discloses a system for heating heating water by utilizing rich medium-pressure steam, which comprises a steelmaking waste heat boiler, and saturated steam generated by the steelmaking waste heat boiler is branched to a steam collecting box and a heat accumulator in parallel through pipelines. After saturated steam generated by a steelmaking waste heat boiler enters the heat accumulator, heat energy of redundant steam is stored in the heat accumulator in the form of high-pressure and high-temperature water, the heat accumulator is connected with a heat exchanger set through a steam pipeline, and the heat exchanger set is connected with a heating water supply end and a heating water outlet end. The heating water supply end is connected with the electric variable-frequency circulating water pump, the water inlet end of the electric variable-frequency circulating water pump is connected with the centralized water tank through a pipeline, the heating water outlet end is connected with the heat supply pipe network, and monitoring assemblies are arranged on the steam pipeline, the heating water supply end and the heating water outlet end. And the monitoring assembly is used for controlling the flow of the medium-pressure steam and monitoring the temperature of the heating water outlet end.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heating and heating supply, specifically relates to a kind of heating water system using rich medium-pressure steam heating. BACKGROUND

[0002] Traditional heating concentrates on different energy supply, including city heat network and regional boiler and unit building independent boiler or hot water heating provided by household gas stove;Traditional central heating is the main way of urban residential heating at present and in the future, and is the main force of urban heating.

[0003] However, the existing heating mode is unstable in temperature difference during continuous heating, and the temperature fluctuates greatly, and the traditional heating form consumes a lot of energy and cannot inhibit the emission of pollutants generated by traditional energy.

[0004] In view of the above factors, the utility model provides a kind of heating water system using rich medium-pressure steam heating, which can improve the utilization efficiency of energy by fully utilizing rich medium-pressure steam, reduce the emission of pollutants generated by using other traditional energy, and has positive significance for environmental protection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of heating water system using rich medium-pressure steam heating to solve the problems raised in the above background technology.

[0006] The utility model aims at providing a kind of heating water system using rich medium-pressure steam heating to solve the problems raised in the above background technology.

[0007] The said heat accumulator is connected with heat exchanger group through steam pipeline, and the heat exchanger group is connected with heating water supply end and heating water outlet end, the heating water supply end is connected with electric variable frequency circulating water pump, and the water inlet end of electric variable frequency circulating water pump is connected with centralized water tank through pipeline, and the heating water outlet end is connected with heat supply pipe network.

[0008] The said steam pipeline and heating water supply end and heating water outlet end are all provided with monitoring assembly, and the flow of medium-pressure steam is controlled and the temperature of heating water outlet end is monitored through monitoring assembly.

[0009] Further, the said monitoring assembly includes pressure regulating valve and temperature control valve installed on steam pipeline, and the said monitoring assembly further includes temperature sensor installed on heating water outlet end for monitoring the temperature of heating water.

[0010] Further, the heat exchanger group and the electric variable frequency circulating water pump are arranged in different levels between the partitions, and the electric variable frequency circulating water pump is arranged in at least two groups.

[0011] Further, the heating pipe network is mainly laid in a direct-buried manner or in a pipe-laying manner.

[0012] The heating water supply end and the heating water outlet end adopt rigid polyurethane foam plastic heat preservation pipes, and the outer protection is a high-density polyethylene outer jacket.

[0013] The heating pipe network pipes all adopt rigid polyurethane foam plastic prefabricated direct-buried heat preservation pipes, and the outer protection is a high-density polyethylene outer jacket.

[0014] Further, the heat exchanger group adopts two or more than two series / parallel configurations connected together to form a heat exchanger.

[0015] Further, a descaler is arranged on the steam pipe, and the descaler is arranged in series at the steam pipe inlet position and is connected with a dirt collection tank through a pipe.

[0016] Further, the saturated steam generated by the steelmaking waste heat boiler is sent to the steam collection tank through a pipe, and the high-temperature and high-pressure condensed water generated after the steam is used by the equipment is sent to the flash tank for flashing, the secondary steam after flashing is changed into condensed water through a temperature and pressure reducing valve, and the condensed water discharged from the flash tank is transported to the water supply system of the steelmaking waste heat boiler through a condensed water recovery device and is circulated again.

[0017] Further, when the temperature of the heating water outlet end is 50 degrees, the temperature control valve of the monitoring assembly is closed.

[0018] When the temperature of the heating water outlet end is 40 degrees, the temperature control valve of the monitoring assembly is opened to 30%.

[0019] The monitoring assembly is connected with a CP end in a wireless mode.

[0020] The application method for heating the heating water system by using the rich medium-pressure steam includes the following steps.

[0021] The saturated steam generated by the steelmaking waste heat boiler is sent to the steam collection tank and the heat accumulator through a pipe, and the heat energy of the excess steam in the saturated steam entering the heat accumulator is stored in the heat accumulator in the form of high-pressure and high-temperature water.

[0022] The saturated steam generated by the steelmaking waste heat boiler is sent to the steam collection tank through a pipe, and the high-temperature and high-pressure condensed water generated after the steam is used by the equipment is sent to the flash tank for flashing, the secondary steam after flashing is changed into condensed water through a temperature and pressure reducing valve, and the condensed water discharged from the flash tank is transported to the water supply system of the steelmaking waste heat boiler through a condensed water recovery device and is circulated again.

[0023] The heat accumulator is connected with the heat exchanger group through a steam pipe, and the medium-pressure steam is transported to the heat exchanger group through the steam pipe to exchange heat with the heating water; the heat exchanger group is connected with a heating water supply end and a heating water outlet end; the heating water supply end is connected with an electric variable frequency circulating water pump; the water inlet end of the electric variable frequency circulating water pump is connected with the centralized water tank through a pipe; and the heating water outlet end is connected with a heating pipe network of a factory area.

[0024] The medium-pressure steam exchanges heat with the heating water through the pipe wall after entering the heat exchanger, and the heat is transferred from the steam side to the heating water side due to the high temperature of the medium-pressure steam, so that the temperature of the heating water is increased.

[0025] The heat exchange amount is adjusted by controlling the flow of the medium-pressure steam through a monitoring drum assembly arranged on the steam pipe.

[0026] A temperature sensor is arranged at the heating water outlet end to monitor the temperature of the heating water, and when the temperature reaches a set value, the steam flow is controlled through a temperature regulating valve to stabilize the outlet temperature of the heating water outlet end.

[0027] Compared with the prior art, the utility model has the beneficial effects of:

[0028] The medium-pressure steam in the utility model usually has high temperature and heat, can quickly increase the temperature of the heating water, and has a faster heating speed than some traditional electric heating methods, so that a large amount of heating water can reach the required temperature in a short time and meet the heating demand.

[0029] The utility model can realize the reuse of energy by using the rich medium-pressure steam for heating the heating water, reduce the additional energy consumption cost, continuously and stably provide heat for the heating water, guarantee the stability of heating, reduce temperature fluctuation, and make the indoor temperature more comfortable. The full use of the rich medium-pressure steam can improve the energy utilization efficiency, reduce the emission of pollutants caused by the use of other traditional energy, and has positive significance for environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a whole connection schematic view of the utility model;

[0031] Figure 2 It is a steam pipe connecting heat exchanger group schematic view of the utility model;

[0032] Figure 3 It is a steam pipe with descaler schematic view of the utility model;

[0033] Figure 4 It is a branch schematic view of the steelmaking waste heat boiler through the pipe to the steam collecting tank of the utility model;

[0034] Figure 5 The utility model discloses a set of header tank / accumulator branch has the electric control valve schematic diagram. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative work belong to the range of the utility model protection.

[0036] In the description of the utility model, it is necessary to explain that, unless there is explicit stipulation and limitation, the terms "mount", "connect", "connection" should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be directly connected, also can be indirectly connected through the intermediate medium. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific conditions.

[0037] In the description of the utility model, it is necessary to understand that the orientation or position relation indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model to a particular orientation, construction and operation, and therefore cannot be understood as limiting the utility model.

[0038] As shown in FIG. Figures 1-5 A kind of heating water system using rich medium-pressure steam, including steelmaking waste heat boiler 1, the saturated steam generated by the steelmaking waste heat boiler 1 is connected to header tank 2 and accumulator 3 by pipeline and parallel branch, after the saturated steam generated by steelmaking waste heat boiler 1 enters accumulator 3, the heat energy of excess steam is stored in the form of high-pressure high-temperature water in accumulator 3;

[0039] The accumulator 3 is connected with heat exchanger group 5 by steam pipeline 4, the heat exchanger group 5 is connected with heating water supply end 6 and heating water outlet end 7, the heating water supply end 6 is connected with electric variable frequency circulating water pump 8, the water inlet end of electric variable frequency circulating water pump 8 is connected with centralized water tank 9 by pipeline, and the heating water outlet end 7 is connected with heating pipe network 10;

[0040] Monitoring assembly 11 is arranged on steam pipeline 4, heating water supply end 6 and heating water outlet end 7, and the flow of medium-pressure steam is controlled and the temperature of heating water outlet end 7 is monitored by monitoring assembly 11.

[0041] The monitoring component 11 includes a pressure regulating valve 12 and a temperature control valve 13 installed on the steam pipe 4; the monitoring component 11 also includes a temperature sensor 14 installed on the heating water outlet end 7 for monitoring the temperature of the heating water.

[0042] The temperature sensor adopts a thermal resistance type sensor structure, and is connected to a control end through a wired or wireless mode, the control end including a control terminal computer, a control cabinet or a mobile phone / tablet CP end.

[0043] The connecting pipes of the steelmaking waste heat boiler 1, the steam collecting box 2 and the regenerator 3 are respectively provided with electric control valves, the electric control valves are connected to a control end through a wired or wireless mode, the control end including a control terminal computer, a control cabinet or a mobile phone / tablet CP end, and the steam entering the steam collecting box 2 and the regenerator 3 can be adjusted through the electric control valves according to different steam demand.

[0044] In order to facilitate the installation of multiple groups of electric frequency conversion circulating water pumps in the use state, the heat exchanger group 5 and the electric frequency conversion circulating water pump 8 are respectively arranged in different levels between the partitions, and at least two groups of electric frequency conversion circulating water pumps 8 are arranged.

[0045] In order to effectively protect the heating pipe network and the heating water supply end 6 and the heating water outlet end 7 in the use state, the heating pipe network 10 is mainly laid in a direct-buried manner or in a pipe-laying manner.

[0046] The heating water supply end 6 and the heating water outlet end 7 adopt a hard polyurethane foam plastic heat preservation pipe, and are externally protected by a high-density polyethylene jacket.

[0047] The heating pipe network 10 adopts a hard polyurethane foam plastic prefabricated direct-buried heat preservation pipe, and is externally protected by a high-density polyethylene jacket.

[0048] In order to set different forms of heat exchanger groups according to different use requirements in the use state, the heat exchanger group 5 adopts two or more than two heat exchangers connected in series / parallel.

[0049] In order to reduce the corrosion rate of the pipe, improve the durability of the pipe, and protect the post equipment in the use state, a descaler 15 is further arranged on the steam pipe 4, the descaler 15 is arranged in series at the inlet position of the steam pipe 4, and the descaler 15 is connected to a dirt collecting box 16 through a pipe.

[0050] In order to make full use of steam in use state to achieve the purpose of saving resources recycling, the saturated steam generated by the steelmaking waste heat boiler 1 is sent to the steam collecting box 2 through the pipeline, and the high-temperature and high-pressure condensed water generated by the steam using equipment is sent to the flash tank 17 for flashing, and the secondary steam after flashing is changed into condensed water through the temperature and pressure reducing valve, and the condensed water is sent to the feedwater system of the steelmaking waste heat boiler 1 through the condensed water recovery device.

[0051] In order to facilitate the temperature control valve control of heating water temperature according to actual needs in use state, when the temperature of the heating water outlet 7 is 50 degrees, the temperature control valve of the monitoring assembly 11 is closed.

[0052] When the temperature of the heating water outlet 7 is 40 degrees, the temperature control valve of the monitoring assembly 11 is opened to 30%.

[0053] The monitoring assembly 11 is connected with the CP end in a wireless mode. Specific embodiment one:

[0055] A heating water system heated by rich medium-pressure steam, comprising a steelmaking waste heat boiler 1, the saturated steam generated by the steelmaking waste heat boiler 1 is sent to the steam collecting box 2 and the heat accumulator 3 through the pipeline, and the heat energy of the excess steam is stored in the heat accumulator 3 in the form of high-pressure and high-temperature water after the saturated steam generated by the steelmaking waste heat boiler 1 enters the heat accumulator 3.

[0056] The heat accumulator 3 is connected with the heat exchanger group 5 through the steam pipeline 4, the heat exchanger group 5 is connected with the heating water supply end 6 and the heating water outlet end 7, the heating water supply end 6 is connected with the electric variable frequency circulating water pump 8, the water inlet end of the electric variable frequency circulating water pump 8 is connected with the centralized water tank 9 through the pipeline, and the heating water outlet end 7 is connected with the heat supply pipe network 10.

[0057] The monitoring assembly 11 is arranged on the steam pipeline 4 and the heating water supply end 6 and the heating water outlet end 7, and the flow of the medium-pressure steam is controlled and the temperature of the heating water outlet end 7 is monitored through the monitoring assembly 11.

[0058] The monitoring assembly 11 comprises a pressure regulating valve 12 and a temperature control valve 13 installed on the steam pipeline 4, and the monitoring assembly 11 further comprises a temperature sensor 14 installed on the heating water outlet end 7 for monitoring the temperature of the heating water.

[0059] In the above embodiment, the supply water pressure is guaranteed to be 0.5MPA, and the pressure regulating valve is used to realize it. Specific embodiment two:

[0061] The difference from the first embodiment is that the temperature control valve is closed when the supply water temperature is 50 degrees.

[0062] In the above embodiment, the water supply pressure is guaranteed to be 0.5MPA, which is realized by a pressure regulating valve, and when the water temperature reaches the specified temperature, the temperature control valve is closed. Specific embodiment three:

[0064] The difference from embodiment one is that when the water supply temperature is 40 degrees, the temperature control valve is opened to 30%.

[0065] In the above embodiment, the water supply pressure is guaranteed to be 0.5MPA, which is realized by a pressure regulating valve, and when the water temperature does not reach the specified temperature, the temperature control valve opening is adjusted. Specific embodiment four:

[0067] The difference from embodiment one is that when the water supply temperature is 40 degrees to 30 degrees, the temperature control valve is opened to 50%.

[0068] In the above embodiment, the water supply pressure is guaranteed to be 0.5MPA, which is realized by a pressure regulating valve, and when the water temperature does not reach the specified temperature, the temperature control valve opening is adjusted. Specific embodiment five:

[0070] The difference from embodiment one is that when the water supply temperature is 30 degrees or less, the temperature control valve is opened to more than 50%.

[0071] In the above embodiment, the water supply pressure is guaranteed to be 0.5MPA, which is realized by a pressure regulating valve, and when the water temperature does not reach the specified temperature, the temperature control valve opening is adjusted. Specific embodiment six:

[0073] The application method for heating the heating water system by using the rich medium-pressure steam includes the following steps:

[0074] The saturated steam generated by the steelmaking waste heat boiler is branched to the steam collecting box and the heat accumulator through pipelines in parallel, and the excess steam heat energy of the saturated steam generated by the steelmaking waste heat boiler is stored in the heat accumulator in the form of high-pressure high-temperature water.

[0075] The high-temperature high-pressure condensed water generated by the saturated steam generated by the steelmaking waste heat boiler through the pipeline to the steam collecting box after being used by the steam equipment is sent to the flash tank for flashing, and the secondary steam after flashing is changed into condensed water by the temperature and pressure reducing valve, and the condensed water discharged from the flash tank is transported to the feedwater system of the steelmaking waste heat boiler through the condensed water recovery device and recycled.

[0076] The heat accumulator is connected with the heat exchanger group through a steam pipeline, the medium-pressure steam is transported to the heat exchanger group through the steam pipeline to perform heat exchange treatment with the heating water, the heat exchanger group is connected with the heating water supply end and the heating water outlet end, the heating water supply end is connected with the electric variable frequency circulating water pump, the water inlet end of the electric variable frequency circulating water pump is connected with the centralized water tank through a pipeline, and the heating water outlet end is connected with the heating pipe network of the factory area.

[0077] After the medium pressure steam enters the heat exchanger, heat is transferred to the heating water through the pipe wall, because the medium pressure steam has a high temperature, heat is transferred from the steam side to the heating water side, so that the temperature of the heating water is increased;

[0078] The heat exchange amount is adjusted by controlling the flow of the medium pressure steam through the monitoring drum assembly arranged on the steam pipeline, and is realized through the pressure regulating valve and the temperature control valve installed on the medium pressure steam pipeline;

[0079] A temperature sensor is installed at the outlet end of the heating water for monitoring the temperature of the heating water, when the temperature reaches the set value, the temperature regulating valve is controlled to control the steam flow, so that the outlet temperature of the heating water outlet end is stabilized.

[0080] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0081] In addition, it should be understood that, although the present specification is described in terms of 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 be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A heating water system heated by rich medium pressure steam, comprising a steelmaking waste heat boiler (1), characterized in that: The saturated steam generated by the steelmaking waste heat boiler (1) is branched to the steam collecting box (2) and the regenerator (3) through pipelines in parallel, and the heat energy of the excess steam is stored in the regenerator (3) in the form of high-pressure and high-temperature water after the saturated steam generated by the steelmaking waste heat boiler (1) enters the regenerator (3); The regenerator (3) is connected with the heat exchanger group (5) through the steam pipeline (4), the heat exchanger group (5) is connected with the heating water supply end (6) and the heating water outlet end (7), the heating water supply end (6) is connected with the electric variable frequency circulating water pump (8), the water inlet end of the electric variable frequency circulating water pump (8) is connected with the centralized water tank (9) through a pipeline, and the heating water outlet end (7) is connected with the heat supply pipe network (10). The steam pipeline (4) and the heating water supply end (6) and the heating water outlet end (7) are all provided with monitoring components (11), and the flow of the medium-pressure steam and the temperature of the heating water outlet end (7) are monitored and controlled through the monitoring components (11).

2. The heating water system using rich IP steam according to claim 1, characterized by: The monitoring components (11) comprise a pressure regulating valve (12) and a temperature control valve (13) installed on the steam pipeline (4); the monitoring components (11) further comprise a temperature sensor (14) installed on the heating water outlet end (7) for monitoring the temperature of the heating water.

3. The heating water system using rich IP steam according to claim 2, characterized by: The heat exchanger group (5) and the electric variable frequency circulating water pump (8) are arranged in different levels between the partition plates respectively, and the electric variable frequency circulating water pump (8) is arranged in at least two groups.

4. The heating water system using rich IP steam according to claim 3, characterized by: The heat supply pipe network (10) is mainly laid in a direct-buried manner or in a pipe-laying manner; The heating water supply end (6) and the heating water outlet end (7) adopt a hard polyurethane foam plastic heat preservation pipe and a high-density polyethylene outer sleeve. The heat supply pipe network (10) adopts a hard polyurethane foam plastic prefabricated direct-buried heat preservation pipe and a high-density polyethylene outer sleeve.

5. The heating water system using rich IP steam according to claim 4, wherein: The heat exchanger group (5) adopts two or more than two heat exchangers connected in series / parallel to form a heat exchanger.

6. The heating water system using rich IP steam according to claim 5, wherein: A descaler (15) is further arranged on the steam pipeline (4), the descaler (15) is arranged in series at an inlet position of the steam pipeline (4), and the descaler (15) is connected with a dirt collecting tank (16) through a pipeline.

7. The heating water system using rich IP steam according to claim 6, wherein: The saturated steam generated by the steelmaking waste heat boiler (1) is branched to the steam collecting box (2) and the regenerator (3) through pipelines in parallel, and the heat energy of the excess steam is stored in the regenerator (3) in the form of high-pressure and high-temperature water after the saturated steam generated by the steelmaking waste heat boiler (1) enters the regenerator (3); 8. The heating water system using rich IP steam according to claim 7, wherein: When the temperature of the heating water outlet end (7) is 50 degrees, the temperature control valve of the monitoring components (11) is closed; When the temperature of the heating water outlet end (7) is 40 degrees, the temperature control valve of the monitoring components (11) is opened to 30%; The monitoring components (11) are connected with a CP end in a wireless mode.

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