Modularized series-connection electrical function unit device capable of being controlled in integrated mode

Abstract

The utility model discloses a modularized series electrical function unit device capable of being integrally controlled, relates to the field of industrial automation control, and aims to solve the problems of complex wiring, high cost, difficult maintenance and the like caused by the fact that each valve needs to be controlled by an independent cable in systems such as a gas soot blower and the like. The device comprises a central control cabinet, a master control communication cable, a plurality of relay module units, a plurality of two-position three-way electromagnetic valves and pneumatic valves driven by the two-position three-way electromagnetic valves. And a direct-current power supply module and a main control output terminal are arranged in the control cabinet. The master control communication cable adopts a parallel bus topology, and all relay module units are connected in parallel to realize unified power supply and signal transmission. A control loop of each electromagnetic valve is formed by connecting contacts of all relay module units in series according to a preset mode, contact type combinations of different branches are different, and branch gating is achieved through hardware connection. The gas soot blower is suitable for the application scene that the gas soot blower needs to switch gas channels according to preset conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial automation control field, concretely relates to a kind of multiway selective on-off for gas delivery system technical field. BACKGROUND

[0002] The commonly used boiler soot blower in the market currently has sound wave soot blower, air soot blower, steam soot blower and gas soot blower, and the gas soot blower is also called shock wave soot blower, acetylene soot blower, shock wave soot blower, explosion wave soot blower, etc., and its main working principle is to use gas and air as gas source, mix air and gas in a certain proportion, and then detonate in a specially-made container, and the shock wave generated acts on the heat exchange surface through the pulse nozzle installed on the boiler wall, and the soot on the heat exchange surface tube bundle is stripped and falls off through sweeping, acoustic fatigue, thermal cleaning, etc., and the gas soot blower is widely used due to its large blowing force, large blowing range, large application range, low equipment cost and other advantages, and with the continuous updating of products, the products are basically mature, and various forms appear, such as modular system, rotating header system, electromagnetic valve branch control system, pneumatic valve branch control system, etc., and the electromagnetic valve branch control system and pneumatic valve branch control system are recognized by users due to their mixed gas branch, low gas and air consumption, good backfire prevention effect, good flame conduit branch sealing performance and other characteristics, but currently an electromagnetic valve or pneumatic valve needs to be controlled by a cable, and a project usually has dozens, dozens, dozens or even more electromagnetic valves and pneumatic valves, so dozens of cables need to be laid in the system, and hundreds of meters or even thousands of meters of cables need to be laid in a project, and the laying of so many cables on the boiler body has the following disadvantages: high raw material cost, high construction difficulty, large occupation of boiler space, many safety hazards, many signal interferences to other electrical equipment of the boiler, and large fault elimination difficulty. In order to solve these problems, a modularized series electrical function unit device capable of integrated control is developed, a unit device is configured near each pneumatic valve, all unit devices in the system are connected in series by a cable, and the electromagnetic valve or pneumatic valve only needs to be controlled by the unit device by sending a signal to the unit device through PLC program when working. UTILITARY MODEL CONTENT

[0003] The utility model discloses a kind of modularization series electrical function unit devices of integrated control, which is a multi-way selective on-off system for gas delivery system.The modularization relay array realizes the encoding output of branch control signal, with the characteristics of high flexibility, strong scalability and high configuration freedom, and is suitable for application scenarios that need to switch gas path according to preset logic sequence or condition, such as gas mixing system and pneumatic actuator switching device.

[0004] To achieve the above object, the utility model provides the following technical scheme.

[0005] The utility model provides a kind of modularization series electrical function unit devices of integrated control, the device includes central control cabinet, one main control communication cable, multiple relay module units, multiple two-position three-way electromagnetic valves and the pneumatic valve driven connection with each two-position three-way electromagnetic valve;

[0006] The central control cabinet is integrated with DC power module and the main control output terminal connected with DC power module;

[0007] The main control communication cable is led out from the main control output terminal, adopts parallel bus type topology structure, and all relay module units are connected in parallel on main control communication cable, forms multiple branches, to realize unified power supply and signal transmission;

[0008] Each relay module unit contains at least one group of independent relay switch, and the relay switch has normally open contact and normally closed contact output capability;

[0009] The control loop of two-position three-way electromagnetic valve of each branch is composed of relay switch contact in all relay module units according to preset series connection mode;For different branches, the type combination of contact in series is different, and the contact type is normally open contact or normally closed contact.

[0010] Further, the capacity of the above device can be linearly expanded by increasing the number of relay module units, and the number of relay module units is n The maximum branch number of the device is 2 n bar.

[0011] Further, the control loop of two-position three-way electromagnetic valve of each branch can also be composed of relay switch contact in all relay module units according to preset parallel connection mode.

[0012] Further, the DC power module is a DC 24V power module.

[0013] Further, the master communication cable comprises a power line and a signal line.

[0014] The power line is used for transmitting the power provided by the direct current power module, and the signal line is used for connecting an external control signal source and a relay coil in each relay module unit.

[0015] Further, the external control signal source is provided by a control logic unit.

[0016] Further, the relay switch contacts of each relay module unit in at least one branch circuit are of the same type, that is, all are normally open contacts or all are normally closed contacts.

[0017] Further, for any relay module unit, the number of relay switch contacts used as normally open contacts is equal to or different from the number of relay switch contacts used as normally closed contacts in each independent branch circuit.

[0018] Further, the type combination of the relay switch contacts in each branch circuit corresponds to a binary address code one by one, wherein the normally open contact represents a binary value, and the normally closed contact represents another binary value.

[0019] Further, the device can be applied to a boiler gas blowing device system, and the pneumatic valve is connected with the gas tank branch.

[0020] The modularized series connection electrical function unit device with integrated control provided by the utility model realizes the technical effect that a plurality of loads can be driven by one cable through a specific and fixed hardware connection structure, solves the problems that each electromagnetic valve or pneumatic valve needs to be controlled by an independent cable in the existing gas blowing device control system, and causes a series of problems such as high cost, difficult construction, large space occupation, many safety hazards, many signal interferences, and great difficulty in troubleshooting, and the technical effect obtained by the utility model directly comes from the improved physical connection relationship, and the beneficial effects are as follows:

[0021] (1) The line is greatly simplified: since the utility model adopts the core circuit structure that each output branch is connected by N relay contacts in a unique and fixed series connection mode, the system does not need to lay a control cable from the control end to the load for each controlled electromagnetic valve. The structure directly leads to the need for only one set of common master communication cable, so that independent control of dozens of loads can be realized, thereby greatly reducing the amount of cable used, saving material and construction cost. And only a small number of relay modules are used to realize the logic coding of a large number of output branches, which significantly reduces the I / O occupation and wiring complexity.

[0022] (2) The reliability and certainty of the device are improved: the on-off logic of each output branch is determined by the permanent and physical wire connection relationship between the relay contacts. This structural characteristic determines that the control logic is hardware-fixed and does not depend on complex software programs which are susceptible to interference, thereby fundamentally avoiding misoperation caused by program runaway or data error, and the anti-interference ability is strong, and the working state is stable and reliable.

[0023] (3) A modular and standardized expansion foundation is formed: the "fixed series connection" structure has high regularity (such as the contact combination corresponding to the binary code). This structure makes the expansion of the system exhibit a standardized hardware superposition mode: to increase the passage, the hardware structure does not need to be changed, and only the corresponding relay contacts and series branches need to be added according to the same structural rules, without changing the core control architecture, so that the system has excellent scalability and modularization characteristics.

[0024] (4) The device has an energy-saving standby mode: part of the branch can be automatically turned on in the "all relay release" state (such as the normally closed combination), thereby reducing the static power consumption.

[0025] (5) The device is suitable for application scenarios such as gas mixing systems and pneumatic actuator switching devices, which need to switch the gas passage according to a preset logic sequence or condition, and has the advantages of high flexibility, strong scalability, high configuration freedom and the like. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 An electrical schematic diagram of a modular series electrical function unit device capable of integrated control is described in the embodiments of the present application.

[0028] Figure 2 Module terminal wiring diagrams of the 01th to 10th paths are described in the embodiments of the present application.

[0029] Figure 3 Module terminal wiring diagrams of the 11th to 20th paths are described in the embodiments of the present application.

[0030] Figure 4 Module terminal wiring diagrams of the 21st to 32nd paths are described in the embodiments of the present application.

[0031] Figure 5 A three-dimensional structural diagram of the modular series electrical function unit device is shown in the embodiments of the present application. DETAILED DESCRIPTION

[0032] In the following description, the specific implementation details (such as experimental devices, operation procedures, data processing steps, and example parameters) provided in the specification regarding "a modular series electrical function unit device capable of integrated control" are fundamentally intended to be illustratively described rather than limitatively defined, and are intended to help those skilled in the art to thoroughly understand the principles and implementation of the present application; however, those skilled in the art should understand that these details only represent one of the possible embodiments, and the core concept of the present application can be realized through other not-yet-described technical means or alternative schemes without departing from the spirit and essence thereof, and the omission of details of conventional experimental methods and devices in the specification is to avoid redundant information from interfering with the understanding of the innovative points, which does not mean that these well-known technologies are not required in implementation. Those skilled in the art should be able to supplement and apply them based on their professional knowledge.

[0033] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. The following embodiments will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of changes and improvements can be made, which are within the scope of protection of the present application.

[0034] Embodiment one, combined Figure 1 To solve the problem that in the existing gas deslagging device control system, each solenoid valve or pneumatic valve needs to be controlled independently by a separate cable, resulting in a large number of cables, high cost, difficult construction, large space occupation, many safety hazards, many signal interferences, and great difficulty in troubleshooting, and a series of problems, a modular series electrical function unit device capable of integrated control is proposed, which is a multi-way selective on-off system for a gas delivery system. The modular relay array realizes the encoding output of the branch control signal, has the characteristics of high flexibility, strong expandability, and high configuration freedom, and is suitable for application scenarios that need to switch the gas path according to the preset logic sequence or conditions, such as gas mixing systems and pneumatic actuator switching devices.

[0035] The device comprises a central control cabinet, a main control communication cable, a plurality of relay module units, a plurality of two-position three-way solenoid valves, and pneumatic valves drivenly connected to the two-position three-way solenoid valves.

[0036] The central control cabinet is integrated with a DC power supply module and a main control output terminal connected to the DC power supply module.

[0037] The master control communication cable is drawn from the master control output terminal, adopts a parallel bus type topology, all relay module units are connected in parallel on the master control communication cable, multiple branches are formed to realize unified power supply and signal transmission.

[0038] Each relay module unit contains at least one group of independent relay switches, and the relay switches have normally open contact and normally closed contact output capability.

[0039] The control circuit of the two-position three-way electromagnetic valve of each branch is composed of the relay switch contacts in all the relay module units in a preset series connection mode; for different branches, the type combination of the series-connected contacts is different, and the contact type is normally open contact or normally closed contact.

[0040] Specifically, as shown in Figure 1 The device includes a central control cabinet, a master control communication cable, multiple relay module units (k1-k5), multiple two-position three-way electromagnetic valves (YV), and pneumatic valves driven connected with each two-position three-way electromagnetic valve; in actual connection, a DC 24V direct current power supply module and a master control output terminal connected with the DC 24V direct current power supply module are integrated in the central control cabinet, a master control communication cable is drawn from the master control output terminal in the central control cabinet, and the master control communication cable adopts a parallel bus type topology, all relay module units (k1-k5) are connected in parallel on the master control communication cable, multiple branches are formed, Figure 1 as shown in 32 branches, to realize unified power supply and signal transmission through one master control communication cable. Each relay module unit contains at least one group of independent relay switches, and the relay switches have normally open (NO) contact and normally closed (NC) contact output capability, that is, Figure 1 k1-k5 switches shown on the right side of Figure 1 each relay switch also has a relay coil (i.e. Figure 1 k1-k5 coils shown on the left side of ) for opening and closing the relay switch through a control signal. The control circuit of the two-position three-way electromagnetic valve of each branch is composed of the relay switch contacts in all the relay module units in a preset series connection mode; for different branches, the type combination of the series-connected contacts is different, and the contact type is normally open contact or normally closed contact, thereby forming a unique electrical circuit coding logic, in subsequent actual application, the normally open (NO) and normally closed (NC) series connection relationship of different relay switches can be adjusted to realize unique addressing and independent control of each air circuit. Similarly, in actual operation, the control circuit of the two-position three-way electromagnetic valve of each branch can also be composed of the relay switch contacts in all the relay module units in a preset parallel connection mode.

[0041] Further, the utility model discloses a binary coding idea constructs branch selection logic, and the relay module unit quantity is n The system maximum controllable branch number is 2 n Strips. For example: when n = 5, 2 5 = 32 independent gas paths can be formed at most, when n = 6, 2 6 = 64 independent gas paths can be formed at most, and so on, and the capacity of the device can be linearly extended by increasing the relay module quantity. The conduction state of each branch is determined by a specific relay action combination, and a unique logic "address" is formed by setting the "normally closed" or "normally open" access mode of each relay contact in the branch control loop. That is, the type combination of the relay switch contact in each branch corresponds to a binary address code one by one, wherein the normally open contact represents a binary value, and the normally closed contact represents another binary value.

[0042] The main control communication cable includes power line and signal line, the power line is used for transmitting the electric energy provided by DC 24V direct current power module, and the signal line is used for connecting external control signal source and relay coil in each relay module unit. The external control signal source is provided by control logic unit, so that the electrical function unit device provided by the utility model is suitable for the application scene that needs to switch gas passage according to preset logic sequence or condition, such as gas mixing system of boiler gas blowing ash device system, pneumatic actuator switching device and the like.

[0043] The embodiment two is in combination with Figures 1 to 5 The embodiment two is in combination with

[0044] Embodiment 1:

[0045] Because the relay switch contact of each relay module unit in at least one branch uses the same type, that is, all are normally open contacts or all are normally closed contacts. Therefore, as Figure 1As shown, the control circuit of the 01st path two-position three-way electromagnetic valve (YV) is five groups of relay normally closed contacts in series; in the initial state (all relays are not in action), the normally closed contacts are in the closed state, and the circuit is in the on state; when the central control cabinet outputs DC24V, if the coil of a certain relay is energized the corresponding normally closed contact is opened the circuit is cut off the electromagnetic valve loses power and the mixed gas cannot enter the 01st path gas tank through the pneumatic valve to complete the non-blowing function. The control circuit of the 32nd path two-position three-way electromagnetic valve (YV) is five groups of relay normally open contacts in series; in the initial state (all relays are not in action), the normally open contacts are open, and the circuit is in the off state; after the relay is in action, the normally open contact is closed, at this time the DC24V current output by the central control cabinet will flow through the 32nd path electromagnetic valve (YV), making it excite and drive the pneumatic valve to open; the mixed gas enters the 32nd path gas tank through the pneumatic valve to complete the path establishment.

[0046] Embodiment 2:

[0047] For any one relay module unit, the relay switch contacts in each independent branch are used as normally open contacts or normally closed contacts in equal or unequal numbers. For example, Figure 1 As shown, the 02nd path is: the control circuit of the two-position three-way electromagnetic valve (YV) is composed of the normally open contact of the first group of relays and the normally closed contacts of the remaining four groups of relays in series; only when the first group of relays is in action and the remaining four groups of relays remain in the released state, the entire control circuit is on; at this time, the 02nd path electromagnetic valve is powered on and drives the corresponding pneumatic valve to open, and the gas flows into the 02nd path gas tank, and the remaining branch connection relationship can be formed in turn.

[0048] Figures 2 to 4 The module terminal connection diagram of the 01st to 32nd paths is shown, Figure 5 The three-dimensional structure diagram of the modular series electrical function unit device is shown, it can be seen that the modular series electrical function unit device capable of integrated control provided by the utility model realizes the technical effect that one cable can drive a large number of loads through a specific and fixed hardware connection structure, solves the problems in the existing gas blowing device control system, i.e. each electromagnetic valve or pneumatic valve needs to be controlled by an independent cable, resulting in a large number of cables, high cost, difficult construction, large space occupation, many safety hazards, many signal interferences, and great difficulty in troubleshooting, and the technical effect obtained by the utility model is directly derived from the improved physical connection relationship, which is as follows:

[0049] (1) The circuit is greatly simplified: Since this utility model adopts the core circuit structure that "each output branch is connected in a unique and fixed series manner by the contacts of N relays (K1-K5 in the figure)," the system does not need to lay control cables from the control end to the load separately for each controlled solenoid valve. Its structure directly results in the independent control of dozens of loads only needing one set of common main control communication cables, thereby greatly reducing the amount of cables used and saving materials and construction costs. Moreover, the logic encoding of a large number of output branches is realized by only a small number of relay modules, which significantly reduces I / O occupation and wiring complexity.

[0050] (2) Improved reliability and determinism of the device: The on / off logic of each output branch is determined by the permanent, physical wire connection between the relay contacts. This structural characteristic determines that its control logic is fixed in hardware and does not rely on complex software programs that are susceptible to interference. This fundamentally avoids malfunctions caused by program crashes or data errors, has strong anti-interference capabilities, and is stable and reliable in operation.

[0051] (3) A modular and standardized expansion foundation is formed: The "fixed series connection" structure has a high degree of regularity (such as the contact combination corresponding to binary code). This construction makes the expansion of the system manifest as a standardized hardware superposition mode: to add a path, there is no need to change the hardware structure, but only to add the corresponding relay contacts and series branches according to the same structural rules, without changing the core control architecture, so that the system has excellent scalability and modularity.

[0052] (4) It has an energy-saving standby mode: some branches can be automatically turned on in the "all relays released" state (such as normally closed combination) to reduce static power consumption.

[0053] In the above description, it should be understood that the use of relevant technical terms (such as "control," "signal," "addressing," etc.) is based on the conventional expression habits of those skilled in the art and is used to describe the connection relationship and functional orientation of the device, and does not mean that the technical solution of this utility model is implemented through software programs or control methods. The essence of the technical solution of this utility model lies in a specific physical connection structure, that is, by connecting the contacts of multiple relays in a preset, fixed series combination, a hardware structure with a unique path is formed. This structure itself can realize the branch selection and switching functions, and its technical effect is entirely determined by this physical structure. Even if the device may receive external control signals or connect to a control system in actual applications, such applications are only one use case of the hardware device and do not change the shape and structure of the object for which this utility model seeks protection—that is, the "modular series electrical functional unit device" itself. The protection scope of this utility model is limited to the specific physical structure of the device and its connection relationship.

[0054] It should also be understood that the word "comprising" when used in this specification and in the following claims indicates the presence of the stated features, integers, steps, operations, elements, and / or components but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0055] The above further describes the technical solutions provided by the utility model through several specific embodiments, in order to highlight the advantages and beneficial effects of the technical solutions provided by the utility model, but the above several specific embodiments are not used as the restriction of the utility model, any reasonable change and improvement, reasonable combination and equivalent replacement of the embodiment of the utility model, etc. based on the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A modular, integrated controllable series electrical function unit device, characterized in that, The device comprises a central control cabinet, a main control communication cable, a plurality of relay module units, a plurality of two-position three-way electromagnetic valves, and pneumatic valves drivenly connected with the two-position three-way electromagnetic valves. The central control cabinet is integrated with a DC power module and a main control output terminal connected with the DC power module. The main control communication cable is led out from the main control output terminal and adopts a parallel bus topology structure, all the relay module units are connected in parallel to the main control communication cable, and a plurality of branches are formed to realize unified power supply and signal transmission. Each relay module unit comprises at least one group of independent relay switches, and the relay switches have normally open contact and normally closed contact output capabilities. The control loop of the two-position three-way electromagnetic valve of each branch is formed by the relay switch contacts in all the relay module units in a preset series connection mode.

2. A modular, series electrical function unit device with integrated control according to claim 1, characterized in that The device capacity can be linearly expanded by increasing the number of relay module units; the number of relay module units is n , and the maximum number of branches of the device is 2 n .

3. An integrally controllable modular series electrical function cell device according to claim 1, wherein, The control loop of the two-position three-way electromagnetic valve of each branch can also be formed by the relay switch contacts in all the relay module units in a preset parallel connection mode.

4. The modular, series electrical function unit device of claim 1, wherein, The DC power module is a DC 24V power module.

5. The modular, series electrical function cell device of claim 1, wherein, The main control communication cable comprises a power line and a signal line. The power line is used to transmit the electric energy provided by the DC power module, and the signal line is used to connect an external control signal source and the relay coils in each relay module unit.

6. An integrally controllable modular series electrical function cell device according to claim 5, wherein, The external control signal source is provided by a control logic unit.

7. The modular, series electrical function unit device of claim 1, wherein, The relay switch contacts of each relay module unit in at least one branch are of the same type, i.e., all are normally open contacts or all are normally closed contacts.

8. The modular, series electrical function unit device of claim 1, wherein, For any one relay module unit, the number of relay switch contacts used as normally open contacts is equal to or different from the number of relay switch contacts used as normally closed contacts in each independent branch.

9. The modular, series electrical function cell device of claim 1, wherein, The type combination of the relay switch contacts in each branch is one-to-one corresponding to a binary address code; wherein, the normally open contact represents one binary value, and the normally closed contact represents another binary value.

10. The modular, series electrical function cell device of claim 1, wherein, The device is applied to a boiler gas soot blower system, and the pneumatic valves are connected with gas tank branches.

Images