Heat supply steam quantity control device and heat supply system

Abstract

The utility model belongs to the technical field of heat supply, and particularly provides a heat supply steam quantity control device and a heat supply system, which comprise a control module, a pressure reducing valve, a steam inlet electric valve and a first pressure sensor, the control module is configured to switch the working mode of the pressure reducing valve to a first adjusting mode when the received first pressure information is smaller than first preset pressure; when the received first pressure information is larger than second preset pressure, the working mode of the pressure reducing valve is switched to a third adjusting mode; and when the received first pressure information is larger than the first preset pressure and smaller than the second preset pressure, the working mode of the pressure reducing valve is switched to the second adjusting mode. By optimizing and adjusting control over the pressure reducing valve, when the steam inlet electric valve of the equipment to be supplied with steam is opened and the first pressure information is low, the pressure reducing valve is controlled to work in the first adjusting mode, so that the pressure reducing valve is slowly opened, large fluctuation of the load of the boiler 6 is avoided, and stable operation of combustion automatic control is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, and in particular relates to a heating steam quantity control device and a heating system. Background Art

[0002] In addition to entering the steam turbine to generate electricity and provide heat, part of the main steam produced by the boiler is directly used to provide heat to the outside through the pressure reducing valve.

[0003] The heating pipeline behind the pressure reducing valve in related technologies is relatively short and small in volume. When the user's autoclave equipment requires heating, the pressure reducing valve opens at maximum speed as the boiler's hot steam enters the autoclave. This causes significant fluctuations in the main steam flow rate of the boiler ahead of the pressure reducing valve, causing the boiler's combustion to switch from automatic control to manual control. This requires manual control of the boiler's combustion, increasing the workload.

[0004] Therefore, how to reduce the fluctuation amplitude of the steam of the boiler at the front end of the pressure reducing valve is currently in urgent need of solution.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Utility Model Content

[0006] The embodiments of the present disclosure at least provide a heating steam quantity control device and a heating system.

[0007] In a first aspect, an embodiment of the present disclosure provides a heating steam flow control device, comprising:

[0008] control module, pressure reducing valve, steam inlet electric valve and first pressure sensor;

[0009] The pressure reducing valve and the steam inlet electric valve are sequentially connected to the steam supply pipeline between the external boiler and the equipment to be supplied with steam;

[0010] The first pressure sensor is configured to detect first pressure information between the pressure reducing valve and the steam inlet electric valve, and send the first pressure information to the control module;

[0011] The control module is configured to control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the first adjustment mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the third adjustment mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the second adjustment mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure.

[0012] In an optional embodiment, the first adjustment mode is that the pressure reducing valve opens at a first preset speed;

[0013] The second adjustment mode is to adaptively adjust the opening of the pressure reducing valve by the control module according to the received first pressure information;

[0014] The third adjustment mode, i.e., the pressure reducing valve is closed at a second preset speed;

[0015] Wherein, the first preset speed is less than the second preset speed.

[0016] In an optional embodiment, the heating steam quantity control device further includes a steam turbine, a steam regulating valve and a second pressure sensor;

[0017] The steam turbine is connected to an external boiler and a main heating network;

[0018] The two ends of the steam regulating valve are respectively connected between the pressure reducing valve and the steam inlet electric valve, and between the steam turbine and the main heating pipe network;

[0019] The second pressure sensor is configured to detect second pressure information between the steam turbine and the main heating pipe network and send the second pressure information to the control module;

[0020] The control module is configured to control the opening and closing of the steam regulating valve according to the received second pressure information.

[0021] In an optional embodiment, when the second pressure information is greater than the first pressure information and the steam regulating valve is in a closed state, the control module is configured to control the steam regulating valve to open.

[0022] In an optional implementation, when the second pressure information is less than or equal to the first pressure information and the steam regulating valve is in an open state, the control module is configured to control the steam regulating valve to close.

[0023] In an optional embodiment, when the second pressure information is less than the target pressure of the equipment to be supplied with steam and the steam regulating valve is in a closed state, the control module is further configured to control the steam regulating valve to open.

[0024] In an optional embodiment, the target pressure is greater than the first preset pressure and less than the second preset pressure.

[0025] In a second aspect, the present disclosure further provides a heating steam flow control device, comprising:

[0026] Control module;

[0027] a first detection module electrically connected to the control module and configured to detect first pressure information between the pressure reducing valve and the steam inlet electric valve;

[0028] a second detection module, electrically connected to the control module and configured to detect second pressure information between the steam turbine and the main heating pipe network;

[0029] The steam regulating valve has its two ends connected between the pressure reducing valve and the steam inlet electric valve, and between the steam turbine and the main heating pipe network;

[0030] The control module is configured to control the opening and closing of the pressure reducing valve and the steam regulating valve according to the first pressure information and the second pressure information.

[0031] In an optional embodiment, the control module is configured to control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the first regulation mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the third regulation mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the second regulation mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure.

[0032] When the second pressure information is greater than the first pressure information and the steam regulating valve is in a closed state, the control module is configured to control the steam regulating valve to open;

[0033] When the second pressure information is less than or equal to the first pressure information and the steam regulating valve is in an open state, the control module is configured to control the steam regulating valve to close;

[0034] When the second pressure information is less than the target pressure of the equipment to be supplied with steam and the steam regulating valve is in a closed state, the control module is further configured to control the steam regulating valve to open.

[0035] In a third aspect, the present disclosure further provides a heating system, comprising:

[0036] Boiler, equipment to be supplied with steam, main heating pipe network and heating steam quantity control device as described above;

[0037] The pressure reducing valve and the steam inlet electric valve are sequentially connected to the steam supply pipeline between the boiler and the equipment to be supplied with steam;

[0038] The boiler is also connected to the main heating network;

[0039] The first pressure sensor is configured to detect first pressure information between the pressure reducing valve and the steam inlet electric valve, and send the first pressure information to the control module;

[0040] The control module is configured to control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the first adjustment mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the third adjustment mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve to switch the working mode of the pressure reducing valve to the second adjustment mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure.

[0041] The beneficial effect of the present utility model is that the heating steam quantity control device and the heating system optimize and adjust the control of the pressure reducing valve. When the steam inlet electric valve of the steam supply equipment is opened and the first pressure information is low, the pressure reducing valve is controlled to operate in the first adjustment mode, so that the pressure reducing valve is opened slowly, thereby avoiding large fluctuations in the boiler load and maintaining stable operation of the automatic combustion control.

[0042] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 A schematic diagram of the electrical principle of the heating steam flow control device provided in an embodiment of the present disclosure;

[0046] Figure 2 This is a control principle diagram of the heating steam supply control device provided in an embodiment of the present disclosure.

[0047] In the figure: 110, control module; 120, pressure reducing valve; 130, steam inlet electric valve; 140, first pressure sensor; 150, equipment to be supplied with gas; 160, boiler; 170, steam turbine; 180, steam regulating valve; 190, second pressure sensor; 200, main heating pipe network. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0049] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe the technical content.

[0050] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0051] See also Figure 1At least one embodiment provides a heating steam quantity control device, comprising: a control module 110, a pressure reducing valve 120, a steam inlet electric valve 130, and a first pressure sensor 140; the pressure reducing valve 120 and the steam inlet electric valve 130 are sequentially connected to the steam supply pipeline between the external boiler 160 and the equipment to be supplied with steam 150; the first pressure sensor 140 is configured to detect first pressure information between the pressure reducing valve 120 and the steam inlet electric valve 130 and send it to the control module 110; the control module 110 is configured to control a switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to a first adjustment mode when the received first pressure information is less than a first preset pressure; control the switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to a third adjustment mode when the received first pressure information is greater than a second preset pressure; and control the switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to the second adjustment mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure. By optimizing and adjusting the control of the pressure reducing valve 120, when the steam inlet electric valve 130 of the steam supply equipment 150 is opened, when the first pressure information is low, the pressure reducing valve 120 is controlled to operate in the first adjustment mode, so that the pressure reducing valve 120 opens slowly, avoiding large fluctuations in the load of the boiler 160, so as to maintain stable operation of the automatic combustion control.

[0052] In an optional embodiment, the first adjustment mode is that the pressure reducing valve 120 opens at a first preset speed; the second adjustment mode is that the opening of the pressure reducing valve 120 is adaptively adjusted by the control module 110 based on the received first pressure information; the third adjustment mode is that the pressure reducing valve 120 closes at a second preset speed; wherein the first preset speed is less than the second preset speed.

[0053] Specifically, the specific values ​​of the first preset speed and the second preset speed are set manually. At the initial stage of steam use by the steam-supplied equipment 150, the value of the first pressure information is low and is less than the first preset pressure. At this time, the pressure reducing valve 120 is slowly opened according to the first preset speed, thereby avoiding a sudden increase in the load of the boiler 160. After a period of steam supply, when the first pressure information is greater than the first preset pressure and less than the second preset pressure, the control module 110 adjusts the opening of the pressure reducing valve 120 according to the built-in PID fuzzy algorithm. When it is detected that the first pressure information is greater than the second preset pressure, the pressure of the gas-supplied equipment needs to be quickly balanced. Therefore, the opening of the pressure reducing valve 120 is quickly reduced according to the second preset speed to suppress the pressure of the gas-supplied equipment.

[0054] In some embodiments, the heating steam flow control device further includes a steam turbine 170, a steam regulating valve 180, and a second pressure sensor 190. The steam turbine 170 is connected to the external boiler 160 and the main heating network 200. The two ends of the steam regulating valve 180 are connected between the pressure reducing valve 120 and the steam inlet electric valve 130, and between the steam turbine 170 and the main heating network 200, respectively. The second pressure sensor 190 is configured to detect second pressure information between the steam turbine 170 and the main heating network 200 and transmit it to the control module 110. The control module 110 is configured to control the opening and closing of the steam regulating valve 180 based on the received second pressure information. By providing the steam regulating valve 180, the main heating network 200 functions as a heat storage container, capable of both supplying steam to the steam supply equipment 150 and receiving charging steam from the steam supply equipment 150, thereby achieving the purpose of adaptively regulating the steam supply equipment 150 and mitigating load disturbances on the boiler 160.

[0055] In a preferred embodiment, when the second pressure information is greater than the first pressure information and the steam regulating valve 180 is in a closed state, the control module 110 is configured to control the steam regulating valve 180 to open. When the second pressure information is less than or equal to the first pressure information and the steam regulating valve 180 is in an open state, the control module 110 is configured to control the steam regulating valve 180 to close. When the second pressure information is less than the target pressure of the equipment to be steam supplied 150 and the steam regulating valve 180 is in a closed state, the control module 110 is further configured to control the steam regulating valve 180 to open.

[0056] It should be noted that the target pressure is greater than the first preset pressure and less than the second preset pressure. The target pressure is the pressure that the steam supply device 150 needs to reach and is set manually.

[0057] See also Figure 2 At least one embodiment further provides a heating steam quantity control device, comprising: a control module 110; a first detection module electrically connected to the control module 110 and configured to detect first pressure information between the pressure reducing valve 120 and the steam inlet electric valve 130; a second detection module electrically connected to the control module 110 and configured to detect second pressure information between the steam turbine 170 and the main heating pipe network 200; a steam regulating valve 180, two ends of which are respectively connected between the pressure reducing valve 120 and the steam inlet electric valve 130 and between the steam turbine 170 and the main heating pipe network 200; the control module 110 is configured to control the opening and closing of the pressure reducing valve 120 and the steam regulating valve 180 according to the first pressure information and the second pressure information.

[0058] The control process is as follows: the control module 110 is configured to control the switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to the first adjustment mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to the third adjustment mode when the received first pressure information is greater than the second preset pressure; control the switch of the pressure reducing valve 120 to switch the working mode of the pressure reducing valve 120 to the second adjustment mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure; When the second pressure information is greater than the first pressure information and the steam regulating valve 180 is in a closed state, the control module 110 is configured to control the steam regulating valve 180 to open; when the second pressure information is less than or equal to the first pressure information and the steam regulating valve 180 is in an open state, the control module 110 is configured to control the steam regulating valve 180 to close; when the second pressure information is less than the target pressure of the steam supply equipment 150 and the steam regulating valve 180 is in a closed state, the control module 110 is also configured to control the steam regulating valve 180 to open.

[0059] At least one embodiment further provides a heating system, comprising: a boiler 160, a device to be supplied with steam 150, a main heating pipe network 200, and a heating steam quantity control device as described above; the pressure reducing valve 120 and the steam inlet electric valve 130 are sequentially connected to the steam supply pipeline between the boiler 160 and the device to be supplied with steam 150; the boiler 160 is also connected to the main heating pipe network 200; the first pressure sensor 140 is configured to detect first pressure information between the pressure reducing valve 120 and the steam inlet electric valve 130, and send it to the control module 110; the control The control module 110 is configured to control the switch of the pressure reducing valve 120 to switch the operating mode of the pressure reducing valve 120 to the first regulation mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve 120 to switch the operating mode of the pressure reducing valve 120 to the third regulation mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve 120 to switch the operating mode of the pressure reducing valve 120 to the second regulation mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure. By optimizing and adjusting the control of the pressure reducing valve 120, when the steam inlet electric valve 130 of the steam supply equipment 150 is opened and the first pressure information is low, the pressure reducing valve 120 is controlled to operate in the first regulation mode, causing the pressure reducing valve 120 to open slowly, thereby avoiding large fluctuations in the load of the boiler 160 and maintaining stable operation of the automatic combustion control.

[0060] In summary, the present invention provides a heating steam flow control device and heating system, comprising: a control module 110, a pressure reducing valve 120, a steam inlet electric valve 130, and a first pressure sensor 140. The control module 110 is configured to switch the operating mode of the pressure reducing valve 120 to a first adjustment mode when the received first pressure information is less than a first preset pressure; to switch the operating mode of the pressure reducing valve 120 to a third adjustment mode when the received first pressure information is greater than a second preset pressure; and to switch the operating mode of the pressure reducing valve 120 to a second adjustment mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure. By optimizing and adjusting the control of the pressure reducing valve 120, when the steam inlet electric valve 130 of the steam supply device 150 is opened and the first pressure information is low, the pressure reducing valve 120 is controlled to operate in the first adjustment mode, causing the pressure reducing valve 120 to open slowly, thereby avoiding large fluctuations in the load of the boiler 160 and maintaining stable operation of the automatic combustion control.

[0061] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A heating steam flow control device, characterized in that: include: A control module (110), a pressure reducing valve (120), a steam inlet electric valve (130), and a first pressure sensor (140); The pressure reducing valve (120) and the steam inlet electric valve (130) are sequentially connected to the steam supply pipeline between the external boiler (160) and the equipment to be supplied with steam (150); The first pressure sensor (140) is configured to detect first pressure information between the pressure reducing valve (120) and the steam inlet electric valve (130), and send the first pressure information to the control module (110); The control module (110) is configured to control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the first regulation mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the third regulation mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the second regulation mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure.

2. The heating steam flow control device according to claim 1, wherein: The first regulating mode, i.e., the pressure reducing valve (120) opens at a first preset speed; The second adjustment mode is to adaptively adjust the opening of the pressure reducing valve (120) through the control module (110) based on the received first pressure information; The third adjustment mode, i.e., the pressure reducing valve (120) is closed at a second preset speed; Wherein, the first preset speed is less than the second preset speed.

3. The heating steam flow control device according to claim 1, wherein: The heating steam quantity control device further includes a steam turbine (170), a steam regulating valve (180), and a second pressure sensor (190); The steam turbine (170) is connected to the external boiler (160) and the main heating pipe network (200); The two ends of the steam regulating valve (180) are respectively connected between the pressure reducing valve (120) and the steam inlet electric valve (130), and between the steam turbine (170) and the main heating pipe network (200); The second pressure sensor (190) is configured to detect second pressure information between the steam turbine (170) and the main heating pipe network (200), and send the second pressure information to the control module (110); The control module (110) is configured to control the opening and closing of the steam regulating valve (180) according to the received second pressure information.

4. The heating steam flow control device according to claim 3, wherein: When the second pressure information is greater than the first pressure information and the steam regulating valve (180) is in a closed state, the control module (110) is configured to control the steam regulating valve (180) to open.

5. The heating steam flow control device according to claim 3, wherein: When the second pressure information is less than or equal to the first pressure information, and the steam regulating valve (180) is in an open state, the control module (110) is configured to control the steam regulating valve (180) to close.

6. The heating steam flow control device according to claim 3, wherein: When the second pressure information is less than the target pressure of the equipment to be supplied with steam (150), and the steam regulating valve (180) is in a closed state, the control module (110) is further configured to control the steam regulating valve (180) to open.

7. The heating steam flow control device according to claim 6, wherein: The target pressure is greater than the first preset pressure and less than the second preset pressure.

8. A heating steam quantity control device, characterized in that: include: Control module (110); a first detection module electrically connected to the control module (110) and configured to detect first pressure information between the pressure reducing valve (120) and the steam inlet electric valve (130); a second detection module electrically connected to the control module (110) and configured to detect second pressure information between the steam turbine (170) and the main heating pipe network (200); The steam regulating valve (180) has two ends connected between the pressure reducing valve (120) and the steam inlet electric valve (130), and between the steam turbine (170) and the main heating pipe network (200); The control module (110) is configured to control the opening and closing of the pressure reducing valve (120) and the steam regulating valve (180) according to the first pressure information and the second pressure information.

9. The heating steam flow control device according to claim 8, wherein: The control module (110) is configured to control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the first regulating mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the third regulating mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the second regulating mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure; When the second pressure information is greater than the first pressure information and the steam regulating valve (180) is in a closed state, the control module (110) is configured to control the steam regulating valve (180) to open; When the second pressure information is less than or equal to the first pressure information, and the steam regulating valve (180) is in an open state, the control module (110) is configured to control the steam regulating valve (180) to close; When the second pressure information is less than the target pressure of the equipment to be supplied with steam (150), and the steam regulating valve (180) is in a closed state, the control module (110) is further configured to control the steam regulating valve (180) to open.

10. A heating system, characterized in that: include: A boiler (160), equipment to be supplied with steam (150), a main heating pipe network (200), and a heating steam quantity control device according to any one of claims 1 to 7; The pressure reducing valve (120) and the steam inlet electric valve (130) are sequentially connected to the steam supply pipeline between the boiler (160) and the equipment to be supplied with steam (150); The boiler (160) is also connected to the main heating pipe network (200); The first pressure sensor (140) is configured to detect first pressure information between the pressure reducing valve (120) and the steam inlet electric valve (130), and send the first pressure information to the control module (110); The control module (110) is configured to control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the first regulation mode when the received first pressure information is less than the first preset pressure; control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the third regulation mode when the received first pressure information is greater than the second preset pressure; and control the switch of the pressure reducing valve (120) to switch the working mode of the pressure reducing valve (120) to the second regulation mode when the received first pressure information is greater than the first preset pressure and less than the second preset pressure.

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