Electrostatic detection device for energetic material powder feeding process

Abstract

The invention discloses an electrostatic detection device for an energetic material powder feeding process. The electrostatic detection device comprises a voltage conversion probe, a high-voltage wire, a non-contact voltage sensor, an explosion-proof junction box, a signal line, a power line, an isolated safety barrier, a control module and a control cabinet, wherein the voltage conversion probe, the high-voltage lead and the non-contact voltage sensor are connected, and the voltage conversion probe is connected with the metal stock bin and is connected with the non-contact voltage sensor through the high-voltage lead; the non-contact voltage sensor is connected with a power line and an isolation type safety barrier arranged in a non-dangerous area through a signal line; the isolation type safety barrier is connected with the control module.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic detection, and more particularly to an electrostatic detection device for an energetic material powder feeding process. Background Art

[0002] At present, the energetic material production industry mainly uses handheld non-contact electrostatic sensors to measure powder static electricity offline. No online electrostatic detection technology used in energetic material production lines in the electrical hazardous area F0 zone has been found in public literature. Summary of the invention

[0003] The object of the present invention is to provide an electrostatic detection device for an energetic material powder feeding process, in order to solve the technical problems in the background technology.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An electrostatic detection device for energetic material powder feeding process, comprising:

[0006] Voltage conversion probe, high-voltage wire, non-contact voltage sensor, explosion-proof junction box, signal wire and power wire, isolated safety barrier, control module and control cabinet; wherein the voltage conversion probe, high-voltage wire, non-contact voltage sensor and voltage conversion probe are connected with metal silo, and the voltage conversion probe is connected with the non-contact voltage sensor through the high-voltage wire; the non-contact voltage sensor is connected with the power wire and the isolated safety barrier arranged in the non-hazardous area through the signal wire; the isolated safety barrier is connected with the control module.

[0007] In some embodiments, an explosion-proof junction box is further included. The explosion-proof junction box is placed in a hazardous area, and the non-contact voltage sensor is disposed in the explosion-proof junction box.

[0008] In some embodiments, a control cabinet is further included. The control cabinet is placed in a non-hazardous area, and the isolation safety barrier and the control module are installed in the control cabinet.

[0009] In some embodiments, the voltage conversion probe is composed of a sensor probe, a fixing metal cylinder, a probe insulation layer, a lantern head, a metal back cover, and a high-voltage wire; the sensor probe is set through the metal wall of the silo through the probe insulation layer and is insulated from the metal conductor at the installation position, the fixing metal cylinder is used to fix the entire set of voltage conversion probes, the fixing metal cylinder is welded to the metal wall of the silo, and the lantern head is used to connect the sensor probe and the high-voltage wire; the metal back cover is fixed on the fixing metal cylinder, and the high-voltage wire is used to couple the voltage measured by the sensor probe to a non-contact voltage sensor located at the rear end of the high-voltage wire.

[0010] In some embodiments, an intermediate insulating layer is also included. The intermediate insulating layer is arranged between the probe insulating layer and the metal back cover. The intermediate insulating layer is used to fix the lantern head and insulate it from the surrounding metal conductors.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The electrostatic detection device for energetic material powder feeding process provided by the present application has novel structure and strong practicality. It is suitable for real-time detection of electrostatic voltage values ​​during energetic material powder feeding and transportation on energetic material production lines, and has an auxiliary detection effect on the electrostatic safety of energetic material powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the electrostatic detection device for the energetic material powder feeding process of the present invention.

[0014] Figure 2 This is the structural diagram of the voltage conversion probe.

[0015] Illustration: 1-metal silo, 2-material receiving device, 3-voltage conversion probe, 4-high voltage wire, 5-non-contact voltage sensor, 6-explosion-proof junction box, 7-signal line and power line, 8-isolation safety barrier, 9-control module, 10-control cabinet, 11-sensor probe, 12-silo metal wall, 13-fixing metal cylinder, 14-probe insulation layer, 15-lantern head, 16-middle insulation layer, 17-metal back cover. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0017] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0018] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0019] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application 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 a limitation on the present application.

[0020] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0021] The following will be combined Figure 1-2 , a device for detecting electrostatic energy in the feeding process of energetic material powder involved in the embodiment of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation on the present application.

[0022] Embodiment 1:

[0023] like Figure 1 As shown, an electrostatic detection device for energetic material powder feeding process includes: a voltage conversion probe 3, a high-voltage wire 4, a non-contact voltage sensor 5, an explosion-proof junction box 6, a signal line and a power line 7, an isolated safety gate 8, a control module 9, and a control cabinet 10; wherein the voltage conversion probe 3, the high-voltage wire 4, the non-contact voltage sensor 5, and the voltage conversion probe 3 are connected to the metal silo 1, and the voltage conversion probe 3 is connected to the non-contact voltage sensor 5 through the high-voltage wire 4; the non-contact voltage sensor 5 is connected to the isolated safety gate 8 set in the non-hazardous area through the signal line and the power line 7; the isolated safety gate 8 is connected to the control module 9.

[0024] The voltage conversion probe 3, high-voltage wire 4, non-contact voltage sensor 5, and explosion-proof junction box 6 are placed in the hazardous area, which is compatible with the electrical hazardous areas F0, F1, and F2 of the energetic material environment. During the feeding process of energetic material powder, the powder flows through the metal silo 1, and the powder is fully in contact with the voltage conversion probe 3. The probe and the powder form an equipotential surface, and the electrostatic voltage of the powder is coupled to the rear non-contact voltage sensor 5 through the high-voltage wire 4 and converted into a standard signal. The signal line and the power line 7 pass through the explosion-proof pipeline, and after leaving the hazardous area to the non-hazardous area, they are connected to the isolation safety barrier 8, and then connected to the control module 9 (PLC or DCS controller) to realize the electrostatic detection function.

[0025] In some embodiments, it also includes an explosion-proof junction box 6, which is placed in a hazardous area, and the non-contact voltage sensor 5 is arranged in the explosion-proof junction box 6. It also includes a control cabinet 10, which is placed in a non-hazardous area, and the isolation safety barrier 8 and the control module 9 are installed in the control cabinet 10.

[0026] See also Figure 2 The voltage conversion probe 3 is composed of a sensor probe 11, a fixing metal cylinder 13, a probe insulation layer 14, a lantern head 15, a metal back cover 17, and a high-voltage wire 4; the sensor probe 11 is set through the metal wall 12 of the silo through the probe insulation layer 14 and is insulated from the metal conductor at the installation position. The sensor probe 11 can be made of stainless steel or copper. In particular, beryllium bronze can be used for places where there is a risk of collision. The length of the sensor probe 11 can be adjusted according to the size of the space in the use environment to fully contact the powder.

[0027] The fixed metal cylinder is used to fix the whole device, and the fixed metal cylinder 13 needs to be welded on the metal wall 12 of the silo. The probe insulation layer 14 is made of polytetrafluoroethylene, which is used to fix the sensor probe 11 and insulate the metal conductor at the installation location. The lantern head 15 is used to connect the sensor probe 11 and the high-voltage wire 4; the metal back cover 17 is fixed on the fixed metal cylinder 13, and the high-voltage wire 4 is used to couple the voltage measured by the sensor probe 11 to the non-contact voltage sensor 5 located at the rear end of the high-voltage wire 4.

[0028] In some embodiments, an intermediate insulating layer 16 is further included. The intermediate insulating layer 16 is disposed between the probe insulating layer 14 and the metal back cover 17. The intermediate insulating layer 16 is used to fix the lantern head 15 and insulate it from the surrounding metal conductors.

[0029] The device uses a voltage conversion probe 3 to couple the voltage of the energetic material powder to the rear end, and the powder will not contaminate the probe, so the probe is maintenance-free. At the same time, the probe is in direct contact with the powder, and the measured electrostatic voltage is less affected by the environment, and the coupling process will not reduce the accuracy of the rear end non-contact voltage sensor 5.

[0030] The device can meet the requirements for dust electrostatic collection in the F0 zone of the electrical hazardous area in an environment containing energetic materials. At the same time, it adopts a separate design of the probe and sensor, which allows the probe to be installed in complex and narrow locations, and has extremely strong compatibility.

[0031] The voltage conversion probe 3 used in the device is in contact with the metal wall 12 of the silo and has the ability to prevent dust leakage.

[0032] The length of the sensor probe 11 can be easily replaced according to the space size of the use environment, so as to fully contact with the energetic material powder in different scenarios.

[0033] The above description is only a preferred embodiment of the present invention and is used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrostatic detection device for energetic material powder feeding process, characterized in that: include: Voltage conversion probe, high voltage wire, non-contact voltage sensor, explosion-proof junction box, signal line and power line, isolated safety barrier, control module, control cabinet; The voltage conversion probe, high-voltage wire, non-contact voltage sensor, and voltage conversion probe are connected to the metal silo, and the voltage conversion probe is connected to the non-contact voltage sensor through the high-voltage wire; the non-contact voltage sensor is connected to the power line and the isolation safety barrier set in the non-hazardous area through the signal line; the isolation safety barrier is connected to the control module.

2. The electrostatic detection device for energetic material powder feeding process according to claim 1 is characterized in that: It also includes an explosion-proof junction box, which is placed in a hazardous area and in which the non-contact voltage sensor is arranged.

3. The electrostatic detection device for energetic material powder feeding process according to claim 1 is characterized in that: It also includes a control cabinet, which is placed in a non-hazardous area, and the isolation safety barrier and the control module are installed in the control cabinet.

4. The electrostatic detection device for energetic material powder feeding process according to claim 1, characterized in that: The voltage conversion probe is composed of a sensor probe, a fixing metal cylinder, a probe insulation layer, a lantern head, a metal back cover, and a high-voltage wire; the sensor probe is set through the metal wall of the silo through the probe insulation layer and is insulated from the metal conductor at the installation position; the fixing metal cylinder is used to fix the entire set of voltage conversion probes, the fixing metal cylinder is welded to the metal wall of the silo, and the lantern head is used to connect the sensor probe and the high-voltage wire; the metal back cover is fixed on the fixing metal cylinder, and the high-voltage wire is used to couple the voltage measured by the sensor probe to a non-contact voltage sensor located at the rear end of the high-voltage wire.

5. The electrostatic detection device for energetic material powder feeding process according to claim 4, characterized in that: It also includes an intermediate insulating layer, which is arranged between the probe insulating layer and the metal back cover. The intermediate insulating layer is used to fix the lantern head and insulate it from the surrounding metal conductors.

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