Electrical isolation device and perfusion apparatus

Abstract

The application discloses an electric isolation device and a perfusion equipment. The application provides an electric isolation device, which comprises a first protector configured to be connected in series to a power supply circuit of an electric equipment to control the power supply circuit to be connected or turned off; one end of the first protector is connected to the electric equipment; a second protector is connected in series to the power supply circuit, and the second protector and the first protector are connected via a second wire; and a first wire, one end of which is connected to the second protector and the other end of which is grounded. The double protection of the first protector and the second protector can significantly improve the electric safety of the perfusion machine and effectively reduce the risk of electric shock of the operator.

Description

Technical Field

[0001] This application relates to the field of electrical protection for building equipment, and more particularly to an electrical isolation device and a grouting device. Background Technology

[0002] In construction engineering, grouting refers to the construction process of pouring prepared concrete into pre-assembled formwork or pile holes. For tall buildings or deep cast-in-place piles, grouting pipes are generally used to deliver the concrete, and the construction is carried out by pumping.

[0003] Grouting equipment, such as grouting machines, is a type of high-voltage electrical equipment with an all-metal structure. During construction, operators of grouting machines face a significant risk of electric shock. Furthermore, the complex environment at construction sites also presents a considerable risk of electrical leakage.

[0004] Existing injection equipment typically focuses on improving injection efficiency and reducing pollution, but lacks electrical safety protection. Utility Model Content

[0005] The purpose of this application is to provide an electrical isolation device and a filling equipment with multiple protection functions to prevent electric shock accidents.

[0006] To solve the above-mentioned technical problems, in a first aspect, this application provides an electrical isolation device, comprising:

[0007] A first protector is configured to be connected in series with the power supply line of an electrical device to control the power supply line to be connected or disconnected; one end of the first protector is connected to the electrical device; a second protector is connected in series with the power supply line, and the second protector and the first protector are connected via a second conductor; one end of the first conductor is connected to the second protector, and the other end is grounded.

[0008] In this embodiment of the application, the device further includes: a grounding fixing terminal, used to fix one end of the first conductor to ground it within a preset area.

[0009] In this embodiment of the application, the second protector includes a resistor, wherein the resistance value of the resistor is greater than or equal to 10. 7 Ohms and less than or equal to 10 12 Ohm; a second current sensing component for acquiring the current through the second protector; a second voltage sensing component for acquiring the voltage at each terminal of the second protector; a second on / off switch for performing the opening and / or closing of the second protector; the second protector is configured to disconnect when the voltage on one side of the second protector is equal to the voltage of the power supply line and the current of the second protector is equal to 0.

[0010] In this embodiment of the application, the first conductor includes a copper core, and the length of the first conductor is greater than or equal to 100 cm and less than or equal to 1000 cm.

[0011] In this embodiment of the application, the first protector includes: a first current sensing component for acquiring the current value of the second conductor; a first voltage sensing component for acquiring the voltage at each terminal of the first protector; and a first on / off switch connected to the first current sensing component for controlling the opening or closing of the first protector.

[0012] In this embodiment of the application, the threshold current of the first protector is 10 mA; the first protector is configured to turn off the first on / off switch when the current current value is greater than or equal to the threshold current.

[0013] In this embodiment of the application, the device further includes a third conductor, through which the second protector is connected to the power supply line.

[0014] In this embodiment of the application, the device further includes: a circuit breaker connected to the third conductor, used to manually shut off the power supply line.

[0015] Secondly, this application also provides a grouting device, including the aforementioned electrical isolation device, and further including: a motor connected to a power supply line via the electrical isolation device; a screw pump driven by the motor to move the slurry to be transported in a spiral motion along the axial direction; and a mortar hopper including a hopper body and a discharge port, wherein the slurry to be transported enters the hopper body and flows out from the discharge port to perform grouting.

[0016] In this embodiment of the application, the grouting device further includes: a support component configured to fix the motor, the screw pump and the mortar hopper; or, configured to move the grouting device.

[0017] Due to the adoption of the above technical solution, the beneficial effects of this application are as follows:

[0018] A second protector is connected in series between the power supply line and the injection equipment, and grounded through the first conductor for grounding protection. If the grounding terminal of the first conductor is working normally, a weak, imperceptible but measurable current will be generated on the second protector; if the grounding terminal of the first conductor fails, there will be voltage on the input side of the second protector, but no current will flow into it. In this case, the protector will directly break the circuit to prevent electric shock.

[0019] A first protector is connected in series between the second protector and the injection device. The first protector is configured to turn off the first on / off switch when the current current value is greater than or equal to the threshold current.

[0020] With the dual protection of the first and second protectors, the electrical safety of the grouting machine is significantly improved, and the risk of electric shock to operators is effectively reduced. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of an infusion device according to an embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the first on / off switch of the first protector in an electrical isolation device according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the second on / off switch of the second protector in an embodiment of the electrical isolation device of this application;

[0025] Figure 4 This is a schematic diagram of the structure of an infusion device according to another embodiment of this application.

[0026] Explanation of symbols in the attached drawings:

[0027] 100 electrical isolation device

[0028] 110 First Protector

[0029] 111 First Current Sensing Component

[0030] 112 First Voltage Sensing Component

[0031] 113 First On / Off Switch

[0032] 120 Second Protector

[0033] 121 Second Current Sensing Component

[0034] 122 Second Voltage Sensing Component

[0035] 123 Second On / Off Switch

[0036] 130 Grounding Fixed Terminal

[0037] 14 circuit breakers

[0038] 11 First Conductor

[0039] 12 Second Conductor

[0040] 13 Third conductor Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0042] As mentioned in the background section, grouting equipment, such as grouting machines, is a type of high-voltage electrical equipment with an all-metal structure. (Reference) Figure 1 , Figure 1 This is a schematic diagram of the structure of a grouting device according to an embodiment of this application. The grouting device includes a grouting machine and an electrical isolation device.

[0043] The grouting machine consists of four main components: a motor, a screw pump, a mortar hopper, and support components. (See reference...) Figure 1 The area outside the dashed box. During grouting, the motor is started, driving the mortar pump and pushing the mortar through the delivery pipe to the nozzle. For example, a foundation mortar grouting device may include a base, a mortar tank mounted on top of the base, a first motor mounted on the lower surface of the mortar tank, a stirring rod mounted on the output end of the first motor, a movably placed screen plate inside the mortar tank, a grouting mechanism located on the upper surface of the base at the front of the mortar tank, and a screening mechanism located at the upper end of the outer surface of the mortar tank. The screening mechanism includes a support plate, support rods mounted on both the left and right ends of the lower surface of the support plate, support blocks mounted on the lower ends of the support rods, and a screening component that drives the screen plate to move up and down on the upper surface of the support plate.

[0044] The grouting machines described above only consider mortar screening. During construction, operators face a significant risk of electric shock. Furthermore, the complex environment at the construction site also presents a substantial risk of electrical leakage.

[0045] The electrical isolation device of this application embodiment is described in detail below with reference to the accompanying drawings. (Continue referring to...) Figure 1 This application provides an electrical isolation device 100, including a first protector 110, a second protector 120, and a first conductor 11.

[0046] A first protector 110 is configured to be connected in series with the power supply line of an electrical device to control the connection or disconnection of the power supply line. One end of the first protector 110 is connected to the electrical device.

[0047] A second protector 120 is connected in series with the power supply line, and the second protector 120 and the first protector 110 are connected via a second conductor 12. The second protector is configured to disconnect when the voltage on one side of the second protector is equal to the voltage of the power supply line and the current of the second protector is zero. The second protector 120 is used for grounding protection. Grounding protection is a safety measure that reliably connects non-energized parts such as the metal casing of electrical appliances to a grounding electrode. Its purpose is to prevent electric shock accidents caused by the casing becoming energized when the equipment insulation is damaged. The working principle is to use a conductor to conduct leakage current to the ground, relying on the characteristic that the human body resistance is much greater than the grounding resistance to reduce the current intensity flowing through the human body.

[0048] The first conductor 11 is connected at one end to the second protector 120 and at the other end to ground.

[0049] In some embodiments, the electrical isolation device 100 further includes a grounding fixing terminal 130. The grounding fixing terminal 130 is used to fix one end of the first conductor 11, grounding it within a preset area. In construction environments, where surrounding personnel and equipment are complex and diverse, to avoid collisions affecting the grounding of the first conductor 11, this embodiment uses a grounding fixing terminal 130 to fix the first conductor 11 within a preset area. For example, the grounding fixing terminal 130 can be a cuboid with an insulating surface or a hemisphere with an insulating surface. When the electrical isolation device 100 is installed or connected near electrical equipment, the grounding fixing terminal 130 can also be installed in a suitable location according to the construction environment.

[0050] refer to Figure 2 , Figure 2 This is a schematic diagram of the first on / off switch of the first protector in an electrical isolation device according to an embodiment of this application. The first protector 110 includes a first current sensing component 111, a first voltage sensing component 112, and a first on / off switch 113.

[0051] The first current sensing component 111 is used to acquire the current value of the second conductor. The first voltage sensing component 112 is used to acquire the voltage at each terminal of the first protector. The first on / off switch 113, connected to the first current sensing component 111, is used to control the opening or closing of the first protector 110. The threshold current of the first protector 110 is 10 mA.

[0052] The first protector 110 is configured to turn off the first on / off switch 113 when the current current value is greater than or equal to the threshold current. In some embodiments, the first on / off switch 113 turns off when the current current is significantly greater than the threshold current of the electrical device. In other embodiments, the first on / off switch 113 turns off when the current current fluctuates significantly instantaneously, because the motor of the electrical device is a self-inducting device and does not experience instantaneous fluctuations during normal operation; therefore, instantaneous fluctuations indicate a fault has occurred.

[0053] refer to Figure 3 , Figure 3 This is a schematic diagram of the second on / off switch of the second protector in an electrical isolation device according to an embodiment of this application. In some embodiments of this application, the second protector 120 includes a resistor (not shown in the figure), a second current sensing component 121, a second voltage sensing component 122, and a second on / off switch 123.

[0054] The resistor is a high-resistance resistor. The resistance value of the resistor is greater than or equal to 10 ohms. 7 Ohms and less than or equal to 10 12 Ohms. A second current sensing component 121 is used to acquire the current passing through the second protector 120; a second voltage sensing component 122 is used to acquire the voltage at each terminal of the second protector 120; a second on / off switch 123 is used to perform the opening and / or closing of the second protector 120.

[0055] The second protector 120 is configured to disconnect when the voltage on one side of the second protector 120 is equal to the voltage of the power supply line and the current of the second protector is 0.

[0056] In some embodiments, the electrical isolation device 100 further includes a third conductor 13. The second protector 120 is connected to the power supply line via the third conductor 13.

[0057] The first conductor 11, the second conductor 12, and the third conductor 13 can be cables, such as copper core cables, used for transmitting and distributing electrical energy. A cable is an assembly consisting of one or more insulated conductors, their respective sheaths, a general protective layer, and an outer sheath; cables may also have additional uninsulated conductors. The length of the first conductor 11 is greater than or equal to 100 cm and less than or equal to 1000 cm.

[0058] In some embodiments, the electrical isolation device 100 further includes a circuit breaker 14. The circuit breaker 14 is connected to the third conductor 13 and is used to manually disconnect the power supply line. In one embodiment, the circuit breaker 14 may be a manual switch. Manually switching the circuit on / off is equivalent to a main switch for the equipment, allowing the operator to manually disconnect the circuit in case of danger.

[0059] The second wire 12 and the first wire 11 are connected in parallel to ensure that at least one wire is working properly and can be detected by the second current sensing component 121 of the second protector 120.

[0060] This application also discloses an infusion device, referenced in... Figure 1 and Figure 4 ,in Figure 4 Figure 4 This is a schematic diagram of the structure of a grouting device according to another embodiment of this application. The grouting device includes the aforementioned electrical isolation device 100, a motor, a screw pump, and a mortar hopper.

[0061] The motor is connected to the power supply line via the electrical isolation device. In one embodiment, the motor is an AC motor, which can be a synchronous motor or an asynchronous motor (the stator magnetic field speed and the rotor rotation speed are not synchronized). The motor is used to drive a screw pump and a mortar hopper.

[0062] The screw pump, driven by the aforementioned motor, moves the slurry to be transported along an axial spiral path. The screw pump consists of a shaft, spiral blades, and a casing. When pumping out the slurry, the pump is placed obliquely in the water, so that the inclination angle of the pump shaft is less than the inclination angle of the spiral blades, with the lower end of the spiral blades in contact with the slurry. When the prime mover drives the screw pump shaft to rotate via a speed-changing device, the slurry enters the blades, rises along the spiral flow path, and eventually exits.

[0063] The mortar hopper includes a hopper body and a discharge port. After the mortar to be transported enters the hopper body, it flows out from the discharge port to perform grouting.

[0064] In some embodiments, the grouting equipment further includes a support member. In some embodiments, the support member is configured to secure the motor, the screw pump, and the mortar hopper. In other embodiments, the support member is configured to move the grouting equipment. Rollers may be installed on the bottom of the grouting equipment to facilitate movement of the equipment at the construction site.

[0065] Continue to refer to Figure 4An electrical isolation device is installed in series on the power supply line of the grouting equipment. A second protector 120 (high-resistance resistor) is connected in series between the third conductor 13 of the external power supply and the grounding terminal. A first conductor 11 is installed at the grounding terminal of the second protector 120 and grounded, ensuring that the cable is grounded. If the grounding terminal is working properly, a weak, imperceptible but measurable current will be generated on the second protector 120. If the first conductor 11 fails, there will be voltage at the third conductor 13 terminal but no current in the second protector 120. In this case, the second protector 120 will break the circuit, preventing electric shock accidents.

[0066] In summary, this embodiment of the application connects a second protector in series between the power supply line and the grouting equipment, and grounds it via a first conductor for grounding protection. If the grounding terminal of the first conductor is functioning normally, a weak, imperceptible but measurable current will be generated on the second protector; if the grounding terminal of the first conductor fails, there will be voltage on the input side of the second protector, but no current will flow into it. In this case, the protector will directly disconnect the circuit to prevent electric shock. A first protector is connected in series between the second protector and the grouting equipment. The first protector is configured to turn off when the current current value is greater than or equal to the threshold current. Through the dual protection of the first and second protectors, the electrical safety of the grouting machine is significantly improved, effectively reducing the risk of electric shock to operators.

[0067] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] As those skilled in the art will understand, this disclosure can be embodied as a method, system, or computer program product. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects, all of which can generally be referred to herein as a "circuit," "module," or "system." Furthermore, this disclosure can take the form of a computer program product on a computer-usable storage medium having computer-usable program code embodied therein.

[0069] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code comprising one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a non-linear order as indicated in the figures. For example, two blocks shown consecutively may actually execute substantially simultaneously, or the blocks may sometimes execute in reverse order, not at all, or in any combination with any other flowchart depending on the function involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system or a combination of dedicated hardware and computer instructions that perform the specified function or action.

[0070] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. An electrical isolation device, characterized in that, include: The first protector is configured to be connected in series with the power supply line of an electrical device to control the connection or disconnection of the power supply line; One end of the first protector is connected to the electrical equipment; A second protector is connected in series with the power supply line, and the second protector and the first protector are connected via a second conductor; The first conductor has one end connected to the second protector and the other end grounded.

2. The electrical isolation device according to claim 1, characterized in that, The device further includes: a grounding fixing terminal, used to fix one end of the first conductor to ground it within a preset area.

3. The electrical isolation device according to claim 1, characterized in that, The second protector includes: A resistor, wherein the resistance value is greater than or equal to 10 ohms. 7 Ohms and less than or equal to 10 12 ohm; A second current sensing component is used to acquire the current passing through the second protector; The second voltage sensing component is used to acquire the voltage at each terminal of the second protector; The second on / off switch is used to perform the opening and / or closing of the second protector; The second protector is configured to disconnect when the voltage on one side of the second protector is equal to the voltage of the power supply line and the current of the second protector is 0.

4. The electrical isolation device according to claim 1, characterized in that, The first conductor includes a copper core, and the length of the first conductor is greater than or equal to 100 cm and less than or equal to 1000 cm.

5. The electrical isolation device according to claim 1, characterized in that, The first protector includes: A first current sensing component is used to acquire the current value of the second conductor; A first voltage sensing component is used to acquire the voltage at each terminal of the first protector; A first on / off switch is connected to the first current sensing component and is used to control the opening or closing of the first protector.

6. The electrical isolation device according to claim 5, characterized in that, The threshold current of the first protector is 10 mA; The first protector is configured as follows: When the current current value is greater than or equal to the threshold current, the first on / off switch is turned off.

7. The electrical isolation device according to claim 1, characterized in that, The device further includes: The third conductor is used to connect the second protector to the power supply line.

8. The electrical isolation device according to claim 7, characterized in that, The device further includes: A circuit breaker, connected to the third conductor, is used to manually shut off the power supply line.

9. A filling device comprising the electrical isolation device according to any one of claims 1 to 8, characterized in that, Also includes: The motor is connected to the power supply line via the electrical isolation device; The screw pump, driven by the motor, moves the slurry to be transported in a spiral motion along the axial direction; The mortar hopper includes a hopper body and a discharge port. After the mortar to be transported enters the hopper body, it flows out from the discharge port to perform grouting.

10. The injection device according to claim 9, characterized in that, The infusion equipment also includes: The support component is configured to fix the motor, the screw pump, and the mortar hopper; or, it is configured to move the grouting equipment.

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