Signal anti-interference relay assembly and boiler soot blower control device

Abstract

The invention belongs to the technical field of relays, and particularly discloses a signal anti-interference relay assembly and a boiler soot blower control device. The signal anti-interference relay assembly comprises a relay set, the relay set comprises a relay body, a base block, an inductor and a connecting part, and the relay body is provided with a first coil terminal and a second coil terminal. The relay body is arranged on the base block. The reactance sensor comprises a load, a first connecting terminal and a second connecting terminal. The first connecting terminal and the second connecting terminal are electrically connected with the two ends of the load respectively. The number of the connecting parts is two, and each connecting part is provided with a first contact part and a second contact part. Wherein the first contact part of one connecting part is connected with the first connecting terminal, and the second contact part is communicated with the first coil terminal. The first contact part of the other connecting part is connected with the second connecting terminal, the second contact part is communicated with the second coil terminal, and the inductor is connected with the coil of the relay body in parallel. According to the invention, misoperation can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of relays, and in particular relates to a signal anti-interference relay component and a boiler soot blower control device. Background Art

[0002] In the control device of the steam soot blower in the furnace of the boiler of a thermal power plant, the signal cable and the power cable are not laid separately, which generates a large amount of induced electricity in the signal cable, affecting the normal operation of the DI signal of the DCS system. In view of the current situation of strong induced electricity, the relevant technology adopts the method of adding an isolation relay to solve the problem of induced electricity generation, that is, the soot blower arrival signal drives the AC relay through 220V AC power, and then the normally open dry contact of the AC relay enters the DI module channel of the DCS system, thereby ensuring the safety of the DI module. However, due to the influence of AC induced electricity on the steam soot blower arrival signal, the coil of the isolation relay will malfunction when the voltage is within a certain range, which will cause the DI module signal to be sent incorrectly. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a signal anti-interference relay component, which can reduce the occurrence of malfunctions in the case of AC induction interference.

[0004] The invention also provides a boiler soot blower control device.

[0005] The signal anti-interference relay assembly of the embodiment of the present invention includes a relay group, and the relay group includes: a relay body, the relay body having a first coil terminal and a second coil terminal; a base block, the relay body is arranged on the base block; an inductor, the inductor includes a load, a first connecting terminal and a second connecting terminal, the first connecting terminal and the second connecting terminal are electrically connected to the two ends of the load respectively; a connecting component, the connecting component is provided with two, the two connecting components are both arranged on the base block, the connecting component has a first contact portion and a second contact portion; the first contact portion of one of the connecting components is connected to the first connecting terminal, and the second contact portion is connected to the first coil terminal, and the first contact portion of the other connecting component is connected to the second connecting terminal, and the second contact portion is connected to the second coil terminal, so that the inductor is connected in parallel with the coil of the relay body through the two connecting components.

[0006] It can be understood that the signal anti-interference relay assembly in this embodiment can divide part of the current by setting an inductor and connecting the inductor in parallel with the two ends of the coil inside the relay body, thereby reducing the current passing through the relay body, reducing the voltage at both ends of the relay body, and reducing the influence of external AC induction on the relay body, which is beneficial to reduce the malfunction of the relay body. In addition, by setting a connecting component, the first connecting terminal and the second connecting terminal are connected to the first coil terminal and the second coil terminal respectively, and the inductor does not need to be directly connected to the cable connected to the first coil terminal or the second coil terminal, which can facilitate the installation and removal of the inductor and reduce the influence on the cable connected to the first coil terminal or the second coil terminal.

[0007] In this embodiment, a mounting groove is provided on the base block, and the connecting component includes a fixed pole block, a movable pole block and a fastener. The fixed pole block and the movable pole block are both arranged in the mounting groove, and a wire passing hole is formed between the movable pole block and the fixed pole block, and the wire passing hole is connected to the first coil terminal or the second coil terminal; the movable pole block has a plug hole for inserting the first connecting terminal or the second connecting terminal, and the movable pole block is movable relative to the fixed pole block; the fastener is arranged on the base block and connected to the movable pole block, and the fastener is used to fasten the movable pole block so as to electrically connect the first connecting terminal or the second connecting terminal to the corresponding cable in the wire passing hole through the movable pole block.

[0008] In this embodiment, a guide groove is provided at one end of the fixed pole block facing the movable pole block, and one end of the movable pole block adjacent to the fixed pole block is slidably connected in the guide groove.

[0009] In this embodiment, a boss is provided on the movable pole block, so that when the movable pole block moves toward the fixed pole block, the movable pole block is limited by the cooperation between the boss and the end surface of the fixed pole block.

[0010] In this embodiment, the fastener comprises a fastening bolt, which is threadedly connected to the base block and rotatably connected to the movable pole block.

[0011] In this embodiment, a slot is provided on the base block, and the load is connected to the slot.

[0012] In this embodiment, a receiving groove is provided on the base block, and the relay body is disposed in the receiving groove.

[0013] In this embodiment, the relay groups are multiple and are arranged in sequence along a preset direction.

[0014] In this embodiment, the base blocks of the plurality of relay groups are integrally formed, and the accommodating grooves of each relay group are interconnected.

[0015] The boiler sootblower control device in this embodiment includes the above-mentioned signal anti-interference relay component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the exploded structure of the signal anti-interference relay assembly according to an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0018] Figure 3 A schematic diagram of a partial cross-sectional structure of a signal anti-interference relay assembly according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] 1. Base block; 2. Inductor; 3. Relay body; 4. Cable; 5. Limiting ring; 6. Connecting component; 7. Fixed pole block; 8. Movable pole block; 9. Wire hole; 10. Socket; 11. First connecting terminal; 12. Fastener; 13. Slot; 14. Cover plate. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0022] like Figures 1 to 3 As shown, the signal anti-interference relay assembly in this embodiment includes a relay group, and the relay group includes a relay body 3, a base block 1, an inductor 2 and a connecting component 6, and the relay body 3 has a first coil terminal and a second coil terminal. The relay body 3 is arranged on the base block 1. The inductor 2 includes a load, a first connecting terminal 11 and a second connecting terminal, and the first connecting terminal 11 and the second connecting terminal are electrically connected to both ends of the load respectively. There are two connecting components 6, and both connecting components 6 are arranged on the base block 1, and the connecting component 6 has a first contact portion and a second contact portion. The first contact portion of one of the connecting components 6 is connected to the first connecting terminal 11, and the second contact portion is connected to the first coil terminal. The first contact portion of the other connecting component 6 is connected to the second connecting terminal, and the second contact portion is connected to the second coil terminal, so as to connect the inductor 2 in parallel with the coil of the relay body 3 through the two connecting components 6.

[0023] Exemplarily, the load of the reactor 2 may be a power resistor or a light bulb or the like.

[0024] The purpose of the second contact portion of one of the connecting components 6 being in communication with the first coil terminal is to connect the cable 4 connected to the first coil terminal to the second contact portion, so as to connect the reactor 2 to the first coil terminal through the cable 4 connected to the first coil terminal. Similarly, the purpose of the second contact portion of the other connecting component 6 being in communication with the second coil terminal is to connect the cable 4 connected to the second coil terminal to the second contact portion, so as to connect the second coil terminal to the second contact portion through the cable 4 connected to the second coil terminal.

[0025] It can be understood that the signal anti-interference relay assembly in this embodiment can divide part of the current by setting the inductor 2 and connecting the inductor 2 in parallel with the two ends of the coil inside the relay body 3, so as to reduce the current passing through the relay body 3, reduce the voltage at both ends of the relay body 3, reduce the influence of the external AC induction on the relay body 3, and thus help to reduce the malfunction of the relay body 3. In addition, by setting the connecting component 6, the first connecting terminal 11 and the second connecting terminal are connected to the first coil terminal and the second coil terminal respectively, and the inductor 2 does not need to be directly connected to the cable 4 connected to the first coil terminal or the second coil terminal, which can facilitate the installation and removal of the inductor 2 and reduce the influence on the cable 4 connected to the first coil terminal or the second coil terminal.

[0026] In this embodiment, as shown in FIG. Figure 3 As shown, a mounting groove is provided on the base block 1, and the connecting component 6 includes a fixed pole block 7, a movable pole block 8 and a fastener 12. The fixed pole block 7 and the movable pole block 8 are both arranged in the mounting groove, and a wire hole 9 is formed between the movable pole block 8 and the fixed pole block 7, and the wire hole 9 is connected to the first coil terminal or the second coil terminal. The movable pole block 8 has a plug hole 10 for inserting the first connecting terminal 11 or the second connecting terminal, and the movable pole block 8 is movable relative to the fixed pole block 7. The fastener 12 is provided on the base block 1 and connected to the movable pole block 8, and the fastener 12 is used to fasten the movable pole block 8 so as to electrically connect the first connecting terminal 11 or the second connecting terminal to the cable 4 in the corresponding wire hole 9 through the movable pole block 8.

[0027] Among them, a wire passing hole 9 is formed between the movable pole block 8 and the fixed pole block 7. Exemplarily, a first semicircular arc groove is provided at one end of the movable pole block 8 facing the fixed pole block 7, and a second semicircular arc groove is provided at one side of the fixed pole block 7 facing the movable pole block 8, so that when the movable pole block 8 and the fixed pole block 7 are docked, a wire passing hole 9 can be formed between the movable pole block 8 and the fixed pole block 7, so that the cable 4 connected to the first coil terminal or the second coil terminal can pass through the wire passing hole 9 between the movable pole block 8 and the fixed pole block 7. In addition, the movable pole block 8 is movable relative to the fixed pole block 7, and the aperture of the wire passing hole 9 can be adjusted by adjusting the distance between the movable pole block 8 and the fixed pole block 7, so that the cable 4 can pass through the wire passing hole 9 easily.

[0028] Specifically, the wire hole 9 is connected with the first coil terminal or the second coil terminal, which means that the wire hole 9 of the connecting component 6 corresponding to the first coil terminal is connected with the first coil terminal, and the wire hole 9 of the connecting component 6 corresponding to the second coil terminal is connected with the second coil terminal. Similarly, the movable pole block 8 has a socket 10 for inserting the first connection terminal 11 or the second connection terminal, which means that the first connection terminal 11 is inserted into the socket 10 of the movable pole block 8 corresponding to the first connection terminal 11, and the second connection terminal is inserted into the socket 10 of the movable pole block 8 corresponding to the second connection terminal.

[0029] The first connection terminal 11 and the second connection terminal can both be PIN pins, which facilitates the plugging of the first connection terminal 11 and the second connection terminal with the jack 10 .

[0030] When installing the inductor 2, the first connecting terminal 11 and the second connecting terminal of the inductor 2 are respectively inserted into the jacks 10 of the two connecting components 6, and the cables 4 connected to the first coil terminal and the second coil terminal are respectively passed through the wire holes 9 of the corresponding connecting components 6, and then the corresponding movable pole block 8 is fastened by the fastener 12, so that the first connecting terminal 11 and the second connecting terminal are electrically connected to the cable 4 in the wire holes 9 in the corresponding connecting component 6, so that the coils of the inductor 2 and the relay body 3 are connected in parallel, and the movable pole block 8 is fixed by fastening, which is conducive to the reliable connection between the connecting component 6 and the inductor 2 and the cable 4, and the stability of the connection is improved.

[0031] In this embodiment, if Figure 3 As shown, a guide groove is provided at one end of the fixed pole block 7 facing the movable pole block 8, and one end of the movable pole block 8 adjacent to the fixed pole block 7 is slidably connected in the guide groove.

[0032] Exemplarily, the cross section of the guide groove is a U-shaped groove, and one end of the movable pole block 8 adjacent to the fixed pole block 7 is inserted into the guide groove.

[0033] It can be understood that by cooperating the movable pole block 8 with the guide grooves on the fixed pole block 7 to guide the movable pole block 8, the movable pole block 8 can be moved smoothly and accurately docked with the fixed pole block 7, which is beneficial to improving the reliability of the overall connection.

[0034] In this embodiment, if Figure 3 As shown, a boss is provided on the movable pole block 8 so that when the movable pole block 8 moves toward the fixed pole block 7 , the movable pole block 8 is limited by the boss and the end surface of the fixed pole block 7 .

[0035] The boss may be a raised portion provided on the active pole block 8, or may be formed by changing the cross-sectional area of ​​the active pole block 8, which is not limited here.

[0036] It can be understood that when the movable pole block 8 moves toward the fixed pole block 7, the movable pole block 8 is limited by the cooperation between the boss and the end face of the fixed pole block 7, which can prevent the movable pole block 8 from causing overpressure on the cable 4 in the wire hole 9 and causing damage to the cable 4. At the same time, it is also convenient to judge whether the movable pole block 8 has moved into place.

[0037] In this embodiment, if Figures 1 to 3 As shown, the fastener 12 includes a fastening bolt, which is threadedly connected to the base block 1 and rotatably connected to the movable pole block 8.

[0038] Specifically, a limiting groove is provided in the movable pole block 8, and the limiting groove is located between the end of the movable pole block 8 away from the fixed pole block 7 and the socket 10. The limiting groove is connected to the socket 10. One end of the fastening bolt is located in the limiting groove. A limiting ring 5 is provided on the outer wall of one end of the fastening bolt located in the limiting groove, and the fastening bolt can be limited by providing the limiting ring 5. When the fastening bolt is tightened, the fastening bolt can abut against the first connection terminal 11 or the second connection terminal located in the socket 10, so that the first connection terminal 11 or the second connection terminal can be fastened by the fastening bolt. At the same time, the limiting ring 5 can abut against the side wall of one end of the limiting groove adjacent to the socket 10 to limit the fastening bolt, which can prevent the fastening bolt from causing overpressure on the first connection terminal 11 or the second connection terminal. When the fastening bolt is loosened, the limiting ring 5 can abut against the inner wall of the end of the limiting groove away from the socket 10 to prevent the fastening bolt from coming out, thereby reducing the loss of the fastening bolt.

[0039] It can be understood that by providing a fastening bolt and threading the fastening bolt to the base block 1, the movable pole block 8 can be fixed or loosened by rotating the fastening bolt, which is convenient for operation.

[0040] In this embodiment, if Figure 1 to Figure 2 As shown, a slot 13 is provided on the base block 1 , and the load is connected to the slot 13 .

[0041] Exemplarily, the slot 13 may be a T-shaped slot 13, and the corresponding load is T-shaped. The load can be limited by the cooperation between the slot 13 and the load, which is beneficial to improve the reliability of the connection of the anti-drying device 2. When the anti-drying device is not installed, the cover plate 14 can be clamped in the slot 13 to block the slot 13.

[0042] In this embodiment, by providing the card slot 13 and snapping the load into the card slot 13 , the installation of the load can be facilitated, and the reliability of the connection between the first connection terminal 11 and the second connection terminal and the jack 10 can be improved.

[0043] In this embodiment, a receiving groove is provided on the base block 1, and the relay body 3 is disposed in the receiving groove.

[0044] It is understandable that by arranging the relay body 3 in the receiving groove and limiting the relay body 3 by the receiving groove, it is easy to install the relay body 3. When multiple relay bodies 3 are provided, it is beneficial to improve the overall neatness.

[0045] In this embodiment, a plurality of relay groups are provided, and the plurality of relay groups are arranged in sequence along a preset direction.

[0046] It should be noted that the number of relay groups can be set as needed and is not limited here.

[0047] In this embodiment, the base blocks 1 of the plurality of relay groups are integrally formed, and the receiving grooves of each relay group are interconnected.

[0048] It can be understood that by setting the base block 1 of each relay group as a whole, the processing of the base block 1 can be facilitated, which is beneficial to saving working procedures, and the accommodating grooves of each relay group are interconnected, which is beneficial to saving space.

[0049] The boiler sootblower control device in this embodiment includes the above-mentioned signal anti-interference relay component.

[0050] Specifically, one of the first coil terminal and the second coil terminal at both ends of the coil of the relay body 3 is connected to the travel switch through a cable 4. The connection method between the coil of the relay body 3 and the travel switch is a conventional prior art and will not be described in detail here. The normally open dry contact of the relay body 3 is connected to the DI module in the control cabinet of the boiler sootblower control device. By connecting the inductor 2 in parallel at both ends of the coil of the relay body 3 to share the current, when the sootblowing actuator of the sootblower moves into position (forward to position or backward to position), the occurrence of DI module signal mis-transmission and relay malfunction can be reduced.

[0051] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A signal anti-interference relay component, characterized in that: A relay group is included, wherein the relay group includes: a relay body, the relay body having a first coil terminal and a second coil terminal; A base block, wherein the relay body is arranged on the base block; An inductor, the inductor comprising a load, a first connecting terminal and a second connecting terminal, wherein the first connecting terminal and the second connecting terminal are electrically connected to two ends of the load respectively; A connecting component, wherein two connecting components are provided, both of which are provided on the base block, and the connecting component has a first contact portion and a second contact portion; The first contact portion of one of the connecting components is connected to the first connecting terminal, and the second contact portion is connected to the first coil terminal. The first contact portion of the other connecting component is connected to the second connecting terminal, and the second contact portion is connected to the second coil terminal, so that the inductor is connected in parallel with the coil of the relay body through the two connecting components.

2. The signal anti-interference relay assembly according to claim 1, characterized in that: The base block is provided with a mounting groove, the connecting component comprises a fixed pole block, a movable pole block and a fastener, the fixed pole block and the movable pole block are both arranged in the mounting groove, a wire hole is formed between the movable pole block and the fixed pole block, and the wire hole is connected with the first coil terminal or the second coil terminal; The movable pole block has a plug hole for inserting the first connection terminal or the second connection terminal, and the movable pole block is movable relative to the fixed pole block; The fastener is disposed on the base block and connected to the movable pole block, and the fastener is used to fasten the movable pole block so as to electrically connect the first connection terminal or the second connection terminal to the corresponding cable in the wire hole through the movable pole block.

3. The signal anti-interference relay assembly according to claim 2, characterized in that: A guide groove is provided at one end of the fixed pole block facing the movable pole block, and one end of the movable pole block adjacent to the fixed pole block is slidably connected in the guide groove.

4. The signal anti-interference relay assembly according to claim 3, characterized in that: A boss is provided on the movable pole block, so that when the movable pole block moves toward the fixed pole block, the movable pole block is limited by the cooperation between the boss and the end surface of the fixed pole block.

5. The signal anti-interference relay assembly according to claim 2, characterized in that: The fastener comprises a fastening bolt, which is threadedly connected to the base block and rotatably connected to the movable pole block.

6. The signal anti-interference relay assembly according to claim 1, characterized in that: The base block is provided with a slot, and the load is connected to the slot.

7. The signal anti-interference relay assembly according to claim 1, characterized in that: The base block is provided with a receiving groove, and the relay body is arranged in the receiving groove.

8. The signal anti-interference relay assembly according to claim 7, characterized in that: The relay groups are arranged in multiple groups, and the multiple groups of relay groups are arranged in sequence along a preset direction.

9. The signal anti-interference relay assembly according to claim 8, characterized in that: The base blocks of the plurality of relay groups are integrally formed, and the accommodating grooves of each relay group are interconnected.

10. A boiler sootblower control device, characterized in that: The invention comprises the signal anti-interference relay assembly according to any one of claims 1 to 9.

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