CN217820652U - Auxiliary testing device for variable-frequency constant-voltage control cabinet - Google Patents

Abstract

The utility model discloses an auxiliary testing device of a variable-frequency constant-pressure control cabinet, which is used for matching with a simulation testing module to test a control module of a variable-frequency constant-pressure water supply system and comprises a hollow shell, wherein the shell is internally divided into a plurality of independent cavities by partition boards; the independent cavity comprises a heat dissipation cavity, an electric control cavity and a wire harness accommodating cavity, the heat dissipation cavity is provided with an opening on a shell, at least two openings on a single heat dissipation cavity form a heat dissipation air duct, and a plurality of dummy load modules are arranged at the heat dissipation air duct; the wire harness of the dummy load module penetrates into the electric control cavity and is connected with the simulation test module arranged in the electric control cavity; the wiring harness storage cavity is bound with a plurality of test cables, the test cables are provided with universal connectors, and the test cables are connected with a control module of the variable-frequency constant-pressure water supply system through the universal connectors.

Description

Auxiliary testing device for variable-frequency constant-voltage control cabinet

Technical Field

The utility model belongs to the technical field of switch board test equipment, concretely relates to frequency conversion constant voltage control cabinet auxiliary test device.

Background

In recent years, with the increasing maturity of variable frequency speed regulation technology, the energy-saving control system has obvious energy-saving effect and reliable and stable control mode, and is widely applied to water supply systems. The variable frequency constant pressure water supply system realizes stepless speed regulation on a water pump motor, automatically changes the rotating speed of the water pump according to the water consumption and the water pressure change through detection and calculation of a microcomputer to keep the water pressure constant so as to meet the water consumption requirement, and is the most advanced and reasonable energy-saving water supply system at present. Compared with the traditional water supply modes such as a water tower, a high-level water tank, an air pressure tank and the like, the system has advantages in aspects such as investment, running economy, system stability, reliability, automation degree and the like.

The variable-frequency constant-pressure water supply system particularly refers to a water supply mode in which the outlet pressure is kept unchanged when the water consumption in a water supply network is changed. The outlet pressure value of the water supply network is determined according to the user demand. The traditional constant-pressure water supply mode is realized by adopting facilities such as a water tower, a high water level tank, an air pressure tank and the like. The frequency conversion constant voltage water supply system uses pipe network water pressure (or user water flow) as the settlement parameter, thereby the rotational speed of the output frequency automatically regulated water pump motor through the microcomputer control converter realizes the hydraulic closed loop control (PID) of pipe network, makes water supply system automatic permanent steady in the pressure value of settlement: when the water amount is increased, the frequency is increased, the rotating speed of the water pump is accelerated, and the water supply amount is correspondingly increased; when the water consumption is reduced, the frequency is reduced, the rotating speed of the water pump is reduced, and the water supply amount is correspondingly reduced, so that the requirements of water supply efficiency users on water pressure and water amount are ensured, and the purposes of improving the water supply quality and the water supply efficiency are achieved; the equipment does not need to build a high-level water tank and a water tower, and the water quality has no secondary pollution, so the equipment is ideal modern building water supply equipment.

In the variable-frequency constant-pressure water supply system, a PLC control cabinet which is automatically controlled needs to be matched to control the whole system. In some water supply systems, a control cabinet or a control module is directly arranged at a pump station, and the common small water supply system is directly installed and debugged on the site for equipment and wiring during construction. But there is some water supply system, and its control module has a certain distance with the pump station, especially to in large-scale water supply system, control module is used for controlling a plurality of pump station, and has a plurality of control module, for the ease of overhaul, adapts to the place and arranges simultaneously, can set up control module in same region. To this kind of setting mode, in installation and later stage debugging, the switch board of purchase can't in time verify when the debugging. Or the control cabinet system customized by the manufacturer only produces the control cabinet without involving the pumping system, so that the control cabinet needs to be subjected to simulation test when leaving a factory, and the cost is higher if different testing pumping systems are set up according to different equipment model requirements.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that prior art exists, the utility model provides a frequency conversion constant voltage control cabinet auxiliary test device can cooperate emulation test module, can build one set of test system by the switch board, through wiring connection control cabinet to the power supply test, thereby obtain the running state of feedback information determination switch board.

The utility model discloses the technical scheme who adopts does:

in a first aspect, the utility model discloses an auxiliary testing device of a variable-frequency constant-pressure control cabinet, which is used for matching with a simulation testing module to test a control module of a variable-frequency constant-pressure water supply system and comprises a hollow shell, wherein the shell is internally divided into a plurality of independent cavities by partition boards;

the independent cavity comprises a heat dissipation cavity, an electric control cavity and a wire harness storage cavity, the heat dissipation cavity is provided with an opening on a shell, at least two openings on a single heat dissipation cavity form a heat dissipation air duct, and a plurality of dummy load modules are arranged at the heat dissipation air duct;

the wire harness of the dummy load module penetrates into the electric control cavity and is connected with the simulation test module arranged in the electric control cavity;

the wiring harness storage cavity is bound with a plurality of test cables, the test cables are provided with universal connectors, and the test cables are connected with a control module of the variable-frequency constant-pressure water supply system through the universal connectors.

In combination with the first aspect, the utility model provides a first embodiment of the first aspect, the heat dissipation intracavity is equipped with the hanging rack, through the fixed dummy load module of hanging rack to be equipped with through-hole and bobbin at heat dissipation intracavity wall, the unnecessary pencil of dummy load module is twined on the bobbin.

With reference to the first aspect or the first embodiment of the first aspect, the present invention provides a second embodiment of the first aspect, wherein the heat dissipation chamber is a through channel disposed in the housing, and the housing has two openings formed along the length direction thereof, and one or two openings are provided with heat sinks.

In combination with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the housing has a plurality of through channels, and a back plate and a front plate are disposed outside the housing for shielding.

In combination with the second embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the housing is a box structure, the bottom of the housing is provided with a plurality of universal wheels, and the upper portion of the housing is provided with a stretchable push-pull rod.

Combine the fourth implementation mode of first aspect, the utility model provides a fifth implementation mode of first aspect, the shell top has puts the thing groove, emulation test module includes terminal equipment, terminal equipment sets up puts the thing inslot, and the pencil on the terminal equipment passes and sets up the automatically controlled intracavity that gets into in the shell in putting a plurality of bar holes on the thing groove.

The utility model has the advantages that:

the utility model discloses a loading structure of integral type, not only have a plurality of dummy load modules, and provide the heat dissipation function for the dummy load module, the user can be according to the dummy load of test demand installation corresponding quantity and power, and connect external power source through emulation test module and carry out the power supply management, then test the switch board, thereby just can carry out the emulation test to the switch board on the scene under the prerequisite of load equipment such as water pump not directly connected to, circuit short circuit causes the components and parts to damage when not only can guaranteeing the test, and have higher flexibility ratio, can place different structures through a plurality of independent spaces that are equipped with.

Drawings

FIG. 1 is a front view of an integrated test apparatus according to an embodiment of the present invention;

FIG. 2 is a side view of an integrated test fixture in an embodiment of the present invention;

FIG. 3 is a rear view of an integrated test fixture according to an embodiment of the present invention;

FIG. 4 is an isometric view of an integrated test fixture in an embodiment of the invention;

fig. 5 is a logic block diagram of the integrated testing device, the PLC control cabinet and the variable-frequency constant-pressure pumping system in the embodiment of the present invention.

In the figure: the wire harness storage device comprises a shell, a push-pull rod, a power supply control module, a wire harness storage cavity, a radiator, a backboard, a dustproof cover, a terminal device and a storage groove, wherein the shell is 1, the push-pull rod is 2, the power supply control module is 3, the wire harness storage cavity is 4, the radiator is 5, the backboard is 6, the dustproof cover is 7, the terminal device is 8, and the storage groove is 9.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

the embodiment discloses an auxiliary testing device of a variable-frequency constant-pressure control cabinet, which is used for testing a control module of a variable-frequency constant-pressure water supply system by matching with a simulation testing module.

First, the variable-frequency constant-pressure control cabinet in this embodiment is a control device for the variable-frequency constant-pressure water supply system, and the variable-frequency constant-pressure water supply system has a pumping system in addition to the control device. The pumping system comprises a plurality of pipelines, and a water pump, an electromagnetic valve and a plurality of pipe fittings which are arranged on the pipelines. Meanwhile, the device also comprises a container such as a steady flow regulator, a pressure tank and the like, and is used for regulating the water pressure. Several sensors are also provided for acquiring different operating parameters, such as pressure, temperature and power detection sensors. In the pumping system, equipment with a signal port and a power supply line is connected with the control module through cables, the control module can perform power supply control and information receiving and transmitting, performs program adjustment according to water pressure data fed back in the pumping system, and performs water supply control according to a set running program.

Specifically, the control module in this embodiment is a control cabinet, the control cabinet is provided with a PLC and a frequency converter, and the external power supply is 380V industrial electricity. The control cabinet is provided with a PLD (programmable logic device) adjusting system and can acquire real-time pressure detection feedback to stabilize the rotating speed of the water pump. And meanwhile, the phase sequence detection system is also arranged, so that parameters can be set, and faults and alarm information can be stored simultaneously.

The control cabinet is connected with a plurality of external pumping systems through bundled wire harnesses, and when delivery verification, installation debugging and maintenance test are carried out, the auxiliary test device provided in the embodiment is matched with the simulation test module to carry out simulation test.

The power supply control module 33 is provided with a control port, is connected with the terminal device 88 through the control port for information feedback, and is also provided with a plurality of ports, is connected with corresponding power supply ports of the load and the control cabinet through the ports, and can transform the current output by the control cabinet, thereby being convenient for testing the operation of the load and forming a complete simulation test loop.

Specifically, the auxiliary testing device in the embodiment includes a hollow shell 11, and the shell 11 is divided into a plurality of independent cavities by partition boards; the independent cavity comprises a heat dissipation cavity, an electric control cavity and a wire harness accommodating cavity 44, the heat dissipation cavity is provided with an opening on the shell 11, at least two openings on a single heat dissipation cavity form a heat dissipation air duct, and a plurality of dummy load modules are arranged at the heat dissipation air duct; the wire harness of the dummy load module penetrates into the electric control cavity and is connected with the simulation test module arranged in the electric control cavity; a plurality of test cables are bound in the wire harness accommodating cavity 44, each test cable is provided with a universal connector, and the universal connectors are connected with a control module of the variable-frequency constant-pressure water supply system.

The dummy load module is a resistive load with heat dissipation fins outside, the dummy load module with corresponding resistance can be selected according to test requirements, the dummy load module replaces loads such as a pump, and the dummy load module can be directly connected to the control cabinet to test the switch circuit. The simulation test module acquires the current information of the dummy load module by connecting the power supply control module 33, so that the simulation test module is used for feeding back the running states of the frequency converter and the switching circuit of the dummy load module.

It should be noted that, the dummy load modules in this embodiment are all 380V dry resistor tubes, and the dummy load modules are commonly used in a generator set test, a UPS uninterruptible power supply test, a transformer test, and a frequency converter test. The dummy load module is connected between the direct-current energy storage capacitor and the three-phase IGBT, generally is a connecting copper bar or a quick-melting circuit in a circuit, and can be directly connected with the quick-melting circuit without quickly melting and detaching a section of connecting copper bar, and actually, the three-phase inversion IGBT positive power supply is disconnected with the direct-current energy storage capacitor.

Further, a hanging frame is arranged in the heat dissipation cavity, the dummy load module is fixed through the hanging frame, a through hole and a winding frame are arranged on the inner wall of the heat dissipation cavity, and redundant wiring harnesses of the dummy load module are wound on the winding frame. Wherein, the inner wall of the heat dissipation cavity is provided with a plurality of screw holes, and a hanging frame is fixed through the screw holes. The hanging frame is a strip-shaped structure made of metal materials, a plurality of strip-shaped grooves are formed in the strip-shaped structure, and meanwhile a plurality of hooks are further arranged. The dummy load module is provided with corresponding hanging points, and the dummy load module support is hung on the hook for fixing. Or the dummy load module is directly tied and fixed by a tying rope which passes through a strip-shaped groove of the hanging frame. And the heat dissipation cavity is internally provided with a plurality of through holes for the wire harness to pass through. The tester can perform wiring harness arrangement as required.

Further, the heat dissipation chamber is a through channel disposed in the housing 11, and the housing 11 has two openings opened along a length direction thereof, and a heat sink 55 is disposed on one or both of the openings. The heat sink 55 is a structure having three fan units, and is connected to the simulation test module through a cable, or a dedicated switch is directly provided on the housing 11, and is directly turned on through the dedicated switch after an external power supply is connected thereto.

Furthermore, the housing 11 has a plurality of through channels, and a back plate 66 and a front plate are disposed outside the housing 11 for shielding. As can be seen in the figure, the openings at both sides of the through channel are covered with dust covers 77, and the dust covers 77 are of metal net structures and can isolate external impurities from entering the through channel. The entire heat sink 55 is in fixed connection with the dust cover 77 and is secured in the open position of the through passage by snapping or bolting. If the internal dummy load module needs to be disassembled or debugged, the dummy load module can be directly taken down and then disposed.

Further, the housing 11 is a box structure, and has a plurality of universal wheels at the bottom, and a stretchable push-pull rod 22 at the upper part of the housing 11.

Further, shell 11 top has puts thing groove 99, simulation test module includes terminal equipment 88, terminal equipment 88 sets up in putting thing groove 99, and the pencil on the terminal equipment 88 passes a plurality of bar holes of setting on putting thing groove 99 and gets into the automatically controlled intracavity in shell 11. The terminal device 88 in this embodiment is specifically a notebook computer, and a user can acquire operation data by connecting a control cabinet after installing test software. Meanwhile, the terminal device 88 is connected with the feedback end of the control cabinet through a signal line, simulates information of various sensors, and can simulate whether the control cabinet can stably run according to a set program after receiving different feedback signals during testing.

It is worth explaining that the equipment is used for auxiliary testing, and mainly provides an integrated movable hollow box body which is used for placing a plurality of pieces of equipment for testing, comprises a plurality of dummy load modules and can contain wire harnesses and a control module. When not in use, the dummy load module is accommodated in the heat dissipation cavity and is wired for use when in use. Due to the mobile property, the test device is convenient to transport and carry, and the corresponding test module can be arranged on the site according to the requirement. However, the user needs to additionally configure the corresponding simulation test module, then independently connect the wires, and debug the corresponding software according to the needs to perform the corresponding test.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (6)

1. The utility model provides a frequency conversion constant voltage control cabinet auxiliary test device for cooperation emulation test module tests frequency conversion constant voltage water supply system's control module, its characterized in that: the device comprises a hollow shell (1), wherein the shell (1) is internally divided into a plurality of independent cavities through partition plates;

the independent cavity comprises a heat dissipation cavity, an electric control cavity and a wire harness storage cavity (4), the heat dissipation cavity is provided with an opening on the shell (1), at least two openings on a single heat dissipation cavity form a heat dissipation air duct, and a plurality of dummy load modules are arranged at the heat dissipation air duct;

the wire harness of the dummy load module penetrates into the electric control cavity and is connected with the simulation test module arranged in the electric control cavity;

a plurality of test cables are bound in the wire harness containing cavity (4), the test cables are provided with universal connectors, and the test cables are connected with a control module of the variable-frequency constant-pressure water supply system through the universal connectors.

2. The auxiliary testing device of the variable-frequency constant-voltage control cabinet as claimed in claim 1, wherein: the heat dissipation cavity is internally provided with a hanging frame, the dummy load module is fixed through the hanging frame, the inner wall of the heat dissipation cavity is provided with a through hole and a winding frame, and redundant wiring harnesses of the dummy load module are wound on the winding frame.

3. The auxiliary testing device of the variable-frequency constant-voltage control cabinet as claimed in claim 1 or 2, wherein: the heat dissipation cavity is a through channel arranged in the shell (1), two openings which are formed in the length direction of the shell (1) are formed in the shell, and a heat radiator (5) is arranged on one or two openings.

4. The auxiliary testing device of the variable-frequency constant-voltage control cabinet as claimed in claim 3, wherein: the shell (1) is provided with a plurality of through channels, and a back plate (6) and a front plate are arranged outside the shell (1) for shielding.

5. The auxiliary testing device of the variable-frequency constant-voltage control cabinet as claimed in claim 3, wherein: the outer shell (1) is of a box body structure, a plurality of universal wheels are arranged at the bottom of the outer shell, and the stretchable push-pull rod (2) is arranged at the upper part of the outer shell (1).

6. The auxiliary testing device of the variable-frequency constant-voltage control cabinet as claimed in claim 5, wherein: the utility model discloses a simulation test module, including shell (1), simulation test module, terminal equipment (8) set up in putting thing groove (9), and the pencil on terminal equipment (8) passes a plurality of bar holes that set up on putting thing groove (9) and gets into the automatically controlled intracavity in shell (1).

Images