CN217543236U

CN217543236U - Digital display adjustable power meter

Info

Publication number: CN217543236U
Application number: CN202220998486.2U
Authority: CN
Inventors: 朱益新; 黄丛林; 马奇菊; 汤云飞; 刘杰
Original assignee: Cqc Intime Testing Technology Co ltd
Current assignee: Cqc Intime Testing Technology Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-04
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a digital display adjustable power meter, which comprises a resistive element and a control unit, wherein the resistive element is arranged inside a cavity of a high-low temperature test box; the control unit is arranged outside the high-low temperature test box body and comprises a PID controller, a thyristor and a power meter, wherein one end of the PID controller is electrically connected with the resistive element, and the other end of the PID controller is electrically connected with the thyristor; one end of the power meter is connected with the resistive element, and the other end of the power meter is connected with the silicon controlled element; the thyristor can be electrically connected to the power supply. The embodiment of the utility model provides a pair of adjustable dynamometer of digital display not only can realize with the high-speed joint of equipment and detect, has avoided the loaded down with trivial details step of dismantling equipment simultaneously, can also portable operation, open promptly and use, avoided the equipment damage problem that complicated wiring step probably caused.

Description

Digital display adjustable power meter

Technical Field

The utility model relates to a power meter, in particular to but digital display power meter belongs to measuring equipment technical field.

Background

The high-low temperature test box is test equipment capable of simulating temperature change rules in atmospheric environment, and mainly aims at experimental tests of electricians, electronic products and other electrical components in high-low temperature comprehensive environments. The reliability of the tested sample is detected by simulating natural climate.

The high-low temperature test box needs to be maintained and detected when the high-low temperature test box leaves a factory or works so as to ensure that the high-low temperature test box can normally work and run. When the high-low temperature test box needs to be detected, the high-low temperature test box generally needs to be disassembled, an electric heating device in the high-low temperature test box is connected with a power meter in series, and whether the high-low temperature test box is in a normal working state or not can be judged by starting the electric heating device and reading the power meter. The detection and disassembly equipment, the limit and the installation are complex in operation and long in time consumption. In the connection process, the line connection is also easy to be wrong due to complicated lines, so that risks of electric shock, equipment damage and the like are caused.

In view of this, it is necessary to develop a digital display adjustable power meter to solve the problems of complex operation and complex wiring when detecting the high and low temperature test chamber.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a but digital display power meter for when solving and detecting high low temperature test box, dismantle loaded down with trivial details, the numerous and diverse problem of wiring.

For realizing the purpose of the utility model, the utility model discloses a technical scheme include:

the embodiment of the utility model provides an adjustable dynamometer of digital display, include: the resistance element is arranged inside a cavity of the high-low temperature test box; the control unit is arranged outside the high-low temperature test box body and comprises a PID controller, a thyristor and a power meter, wherein one end of the PID controller is electrically connected with the resistive element, and the other end of the PID controller is electrically connected with the thyristor; one end of the power meter is connected with the resistive element, and the other end of the power meter is connected with the silicon controlled element; the thyristor can be electrically connected to a power source.

Compared with the prior art, the utility model has the advantages that: the embodiment of the utility model provides a pair of adjustable dynamometer of digital display not only can realize with the high-speed joint of equipment and detect, has avoided the loaded down with trivial details step of dismantling equipment simultaneously, can also portable operation, open promptly and use, avoided the equipment damage problem that complicated wiring step probably caused.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a digital display adjustable power meter provided in an exemplary embodiment of the present invention;

fig. 2 is a schematic diagram of a digital display adjustable power meter provided in an exemplary embodiment of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

description of the reference numerals:

1. a resistive element;

2. a control unit; 21. a PID controller; 22. a thyristor; 23. a power meter;

4. a portable unit; 41. a box cover; 42. a box body; 43. a locking mechanism; 431. a first connecting groove; 432. a second connecting groove; 433. a first clip member; 4331. a jack; 434. a second clip member; 44. an operation panel;

5. and (4) switching.

Detailed Description

In view of the deficiencies in the prior art, the inventor of the present invention has made extensive studies and practices to provide the technical solution of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.

The installation and the dismantlement that the adjustable dynamometer of digital display that this embodiment provided can be quick to be convenient for gather the measured data, complex operation when solving detected power, the numerous and diverse problem of wiring.

The embodiment of the utility model provides an adjustable power meter of digital display, include: the resistive element 1 is arranged inside a cavity of the high-low temperature test box; the control unit 2 is arranged outside the high-low temperature test box body, the control unit 2 comprises a PID controller 21, a silicon controlled element 22 and a power meter 23, one end of the PID controller 21 is electrically connected with the resistive element 1, and the other end of the PID controller is electrically connected with the silicon controlled element 22; one end of the power meter 23 is connected with the resistive element 1, and the other end is connected with the thyristor 22; the thyristor 22 can be electrically connected to a power source.

In some specific embodiments, the control unit 2 further includes a switch 5, one end of the switch 5 is electrically connected to the PID controller 21 and the thyristor 22, and the other end is electrically connected to the power supply.

In some specific implementation schemes, an air inlet and an air outlet are further arranged on the high-low temperature test box body, the air inlet and the air outlet are communicated with the cavity to form a heat dissipation channel for circulating air, and the resistive element 1 is arranged at an air return opening of the cavity.

In some specific embodiments, the digital display adjustable power meter further includes: the portable unit 4 is provided with an installation cavity and a placement cavity in the portable unit 4, an operation box is arranged in the installation cavity, and the control unit 2 is arranged in the operation box.

In some specific embodiments, the inner side wall surface of the installation cavity is provided with a guide groove, and the operation box is slidably connected with the guide groove.

In some more specific embodiments, the operation box includes a box body 42 and a box cover 41, the box body 42 has an open end, and the box cover 41 is hinged with the open end of the box body 42.

In some specific embodiments, the operation box further includes a locking structure 43, the locking structure 43 includes a first connecting groove 431 and a second connecting groove 432, the first connecting groove 431 is disposed on the outer side wall surface of the box body 42, the second connecting groove 432 is disposed on the outer side wall surface of the box cover 41 and is disposed corresponding to the first connecting groove 431, a first clamping piece 433 and a second clamping piece 434 are connected between the first connecting groove 431 and the second connecting groove 432, and the first clamping piece 433 is clamped with the second clamping piece 434.

In some specific embodiments, the first latching member 433 further includes a receptacle 4331, the receptacle 4331 is disposed through the first latching member 433, and the second latching member 434 is engaged with the first latching member 433 through the receptacle 4331.

In some specific embodiments, the operation box is further connected with an operation panel 44, and the switch 5 is disposed on the operation panel 44.

In some more specific embodiments, the operation buttons connected to the power meter 23 and/or the thyristor 22 are disposed to protrude from the operation panel 44.

In the following, the technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings and the specific embodiments, unless otherwise specified, the PID controller, the resistive element, the power meter, etc. used in the embodiments of the present invention are all known components and parts by those skilled in the art, which are commercially available, and the specific structure and model thereof are not limited herein.

Referring to fig. 1-3, a digital display adjustable power meter includes a resistive element 1 and a control unit 2, wherein the resistive element 1 is disposed in a cavity of a test chamber; the control unit 2 is arranged outside the test box body and is electrically connected with the resistive element 1, the control unit 2 comprises a PID controller 21 and a silicon controlled element 22, one end of the PID controller 21 is connected with the resistive element 1, and the other end of the PID controller is connected with the silicon controlled element 22; the control unit 2 further comprises a power meter 23, wherein one end of the power meter 23 is connected with the resistive element 1, and the other end of the power meter 23 is connected with the thyristor 22; wherein the thyristor 22 is further electrically connected to a power supply through a wire.

When a high-low temperature test chamber needs to be detected, the resistive element 1 is placed in the cavity of the high-low temperature test chamber, all parts connected with two ends of the resistive element 1 through leads are placed outside the high-low temperature test chamber, and a power supply is electrically connected with the power supply. The thyristor 22 is operated and adjusted to a certain degree, the reference value can be observed through a power meter 23, the thyristor 22 inputs the reference value into the PID controller 21 connected to one end of the thyristor, and the PID controller 21 adjusts the parameters of the resistive element 1, so that the resistive element 1 is shown to be heated or cooled to a specified temperature.

The PID controller 21, which is composed of a proportional unit (P), an integral unit (I) and a derivative unit (D), can be understood as a feedback loop component, by means of which the PID controller 21 can maintain the stability of the connection system. Namely, while the PID controller 21 controls the temperature change of the resistive element 1, the loop system in which the PID controller 21 is located stabilizes the resistive element 1 at this specified temperature.

Exemplarily, the performance of the high and low temperature test box can be detected by the digital display adjustable power meter provided by the utility model according to an exemplary embodiment. Placing the resistive element 1 in the cavity of the high-low temperature test chamber, and placing other electrical components except the resistive element 1 outside the high-low temperature test chamber. And opening the high-low temperature test chamber, adjusting the test temperature in the chamber to T, and adjusting the output power of the resistive element 1 through the silicon controlled element 22. And continuously adjusting the output power of the resistive element 1 until the power of the resistive element reaches the critical power, wherein the critical power is understood to mean that the temperature in the high-temperature and low-temperature test box changes if the output power of the resistive element 1 exceeds the critical power. Specifically, during adjustment, the output power of the resistive element 1 is continuously increased to slightly change the temperature in the high-low temperature test box, and then the output power is reduced by a small amount until the temperature in the high-low temperature test box is effectively stabilized at the temperature T for a long time, wherein the output power at this time is the critical power. At this time, the critical power output by the resistive element 1 can be regarded as the loaded power of the high-low temperature test chamber at the maintaining temperature T. This adjustable dynamometer of digital display is applicable to and need open the lower temperature scope that the compressor could reach to the proof box and tests, can avoid dismantling complicated operations such as high low temperature proof box and wiring, through adjusting and controlling resistive element 1, can detect the on-load power of high low temperature proof box.

Further, the control unit 2 further includes a switch 5, wherein one end of the switch 5 is electrically connected to the PID controller 21 and the thyristor 22, and the other end is electrically connected to the power supply. The power supply is electrically connected with the power supply, and the digital display adjustable power meter 23 can be applied or closed by the on-off switch 5, so that repeated plugging and unplugging are avoided.

Further, the resistive element 1 is a PTC heater, and the PTC heater is connected to the digital display adjustable power meter 23 as the resistive element 1, so that the specified adjustment temperature can be controlled at a constant temperature, and the PTC heater is preferably placed in a high-low temperature test chamber to avoid potential safety hazards such as fire and the like due to stable safety performance.

Further, the thyristor 22 is an SSR thyristor.

Furthermore, still be provided with air intake and air outlet on the high low temperature test box, air intake, air outlet with the cavity intercommunication forms the heat dissipation channel that can supply the air cycle to circulate, resistive element 1 sets up the return air inlet department of cavity. And the surface temperature of the resistive element 1 and/or the connection point thereof is reduced, and high-temperature damage is avoided.

Furthermore, the utility model provides an embodiment of a preferred, an adjustable power meter of digital display still includes portable unit 4, be provided with the installation cavity in the portable unit 4 and place the chamber, be provided with the operation box in the installation cavity, the control unit 2 sets up in the operation box. When the power meter is not used, the control unit 2 is placed in the operation box, the resistive element 1, the connecting lead and other parts are placed in the placing cavity, and the digital display adjustable power meter 23 is carried and stored by transferring the portable unit 4. During the use, open portable unit 4 will resistive element 1 takes out and installs, through the operation box is right control unit 2 carries out the control adjustment, convenient operation and carries.

Furthermore, the inside wall face of installation cavity is provided with the guide way, the operation box with guide way sliding connection. The operation box and the installation cavity are assembled and disassembled through the guide groove, so that the maintenance is convenient.

Further, the operation box comprises a box body 42 and a box cover 41, wherein the box body 42 is provided with an opening end, and the box cover 41 is hinged with the opening end of the box body 42. The control unit 2 is placed in the box body 42, the box cover 41 is rotated to close the operation box, maintenance and installation configuration of internal electrical components are facilitated, and the applicability of the digital display adjustable power meter 23 is improved through reasonable adjustment configuration.

Furthermore, the operation box further includes a locking structure 43, the locking structure 43 includes a first connecting groove 431 and a second connecting groove 432, referring to fig. 3, the first connecting groove 431 is disposed on an outer side wall surface of the box body 42, the second connecting groove 432 is disposed on an outer side wall surface of the box cover 41 and is disposed corresponding to the first connecting groove 431, a first clamping piece 433 and a second clamping piece 434 are connected between the first connecting groove 431 and the second connecting groove 432, and further, the first clamping piece 433 is slidably connected with the first connecting groove 431 and/or the second clamping piece 434 is slidably connected with the second connecting groove 432. The operation box needs to be opened, and the first clamping piece 433 and the second clamping piece 434 are sequentially taken down or slid, so that the box cover 41 can be rotated to be opened. After the operation, the box cover 41 and the box body 42 are closed, the first clamping piece 433 and the second clamping piece 434 are clamped and connected in a sliding mode or an installation mode respectively, so that the mutual abutting parts of the first clamping piece and the second clamping piece are fixed through clamping, the box cover 41 and the box body 42 cannot be rotated to be opened at the moment, and therefore the operation box can be closed. When the portable unit 4 is moved or carried, the operation box can be prevented from being opened by mistake, and internal components can be prevented from falling or a circuit can be prevented from being disconnected.

Furthermore, the utility model discloses still provide a preferred scheme, first fastener 433 still includes jack 4331, jack 4331 run through in first fastener 433 sets up, second fastener 434 pass through jack 4331 with first fastener 433 joint. When needing fixed lid 41 and box body 42, slide or install first fastener 433 to the orientation is close to second fastener 434 one side is removed first fastener 433, and then slides second fastener 434 makes second fastener 434 be close to first fastener 433 one end with jack 4331 pegs graft, thereby makes first fastener 433 is pegged graft fixedly with second fastener 434, can further stabilize locking structure 43 stability avoids the mistake of operation box to open.

Further, the operation box is further connected with an operation panel 44, and the switch 5 is arranged to protrude from the operation panel 44. The power meter 23 and/or the operating button of the thyristor 22 are disposed protruding from the operating panel 44. When the digital display adjustable power meter 23 is adjusted to be opened and closed, the digital display adjustable power meter can be operated through the opening and closing switch 5, electrical elements which are not required to be operated inside are hidden, error touch and bending abrasion are avoided, and the operation panel 44 is simplified.

In a preferred embodiment of the present invention, the thyristor 22 is electrically connected to a temperature sensor through a wire, the temperature sensor can monitor the cavity temperature of the high-low temperature test chamber, and automatically adjust the heating power of the resistive element 1, and further evaluate the performance of the high-low temperature test chamber through the stabilized display power data.

To sum up, use the embodiment of the utility model provides a but digital display power meter is not only can realize the high-speed joint and the detection of merit and equipment, has avoided the loaded down with trivial details step of dismantling equipment simultaneously, can also portable operation, and the function of opening promptly has avoided the equipment damage problem that complicated wiring step probably caused.

It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the invention, and the purpose of the present invention is to provide those skilled in the art with the understanding of the content of the present invention and the implementation thereof, and therefore, the protection scope of the present invention should not be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A digital display adjustable power meter, comprising:

the resistive element (1) is arranged inside a cavity of the high-low temperature test box;

the control unit (2) is arranged outside the high-low temperature test box body, the control unit (2) comprises a PID controller (21), a silicon controlled element (22) and a power meter (23), one end of the PID controller (21) is electrically connected with the resistive element (1), and the other end of the PID controller is electrically connected with the silicon controlled element (22); one end of the power meter (23) is connected with the resistive element (1), and the other end of the power meter is connected with the silicon controlled element (22);

the thyristor (22) can be electrically connected to a power supply.

2. The digitally-displayed adjustable power meter according to claim 1, wherein the control unit (2) further comprises a switch (5), one end of the switch (5) is electrically connected to the PID controller (21) and the thyristor (22), and the other end is electrically connected to the power supply.

3. The digital display adjustable power meter according to claim 1, wherein the high and low temperature test box body is further provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the cavity to form a heat dissipation channel for circulating air, and the resistive element (1) is arranged at an air return port of the cavity.

4. The digital display adjustable power meter according to claim 2, further comprising: the portable unit (4), be provided with the installation cavity in the portable unit (4) and place the chamber, be provided with the operation box in the installation cavity, the control unit (2) sets up in the operation box.

5. The digital display adjustable power meter according to claim 4, wherein a guide groove is formed on an inner side wall surface of the mounting cavity, and the operation box is slidably connected with the guide groove.

6. The digitally tunable power meter according to claim 5, wherein the operation box comprises a box body (42) and a box cover (41), the box body (42) having an open end, the box cover (41) being hinged to the open end of the box body (42).

7. The digital display adjustable power meter according to claim 6, wherein the operation box further comprises a locking structure (43), the locking structure (43) comprises a first connecting groove (431) and a second connecting groove (432), the first connecting groove (431) is disposed on the outer side wall surface of the box body (42), the second connecting groove (432) is disposed on the outer side wall surface of the box cover (41) and corresponds to the first connecting groove (431), a first clamping piece (433) and a second clamping piece (434) are connected in the first connecting groove (431) and the second connecting groove (432), and the first clamping piece (433) is clamped with the second clamping piece (434).

8. The digital display adjustable power meter according to claim 7, wherein the first jaw member (433) further comprises a receptacle (4331), the receptacle (4331) is disposed through the first jaw member (433), and the second jaw member (434) is engaged with the first jaw member (433) through the receptacle (4331).

9. The digital display adjustable power meter according to claim 6, wherein an operation panel (44) is further connected to the operation box, and the switch (5) is disposed on the operation panel (44).

10. The digitally tunable power meter according to claim 9, wherein operating buttons connected to the power meter (23) and/or the thyristor (22) are provided protruding from the operating panel (44).