CN209168496U - A kind of Multifunctional resistance value measurement experiment device - Google Patents
A kind of Multifunctional resistance value measurement experiment device Download PDFInfo
- Publication number
- CN209168496U CN209168496U CN201721764861.2U CN201721764861U CN209168496U CN 209168496 U CN209168496 U CN 209168496U CN 201721764861 U CN201721764861 U CN 201721764861U CN 209168496 U CN209168496 U CN 209168496U
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- Prior art keywords
- resistance
- resistance wire
- bottom plate
- liquid nitrogen
- resistance value
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Abstract
The utility model relates to experimental provision technical field, specially a kind of Multifunctional resistance value measurement experiment device.The device controls the temperature of testing resistance silk using thermostat, thus the resistance value for the resistance wire for enabling student very easily to need to measure according to experiment under different temperatures, and next student tests for convenience, the waiting time of experiment is reduced simultaneously, inventor's experimental provision devises a kind of the easiest and safety constant temperature mechanism cooling method-liquid nitrogen cooling, furthermore, the relationship between the conductive cross-sectional area and resistance value of resistance is understood in order to facilitate student, inventor winds roller by being provided with the resistance wire that one can wind a variety of resistance wires, in a word, the experimental provision is compact-sized, it is feature-rich, with good promotional value.
Description
Technical field
The utility model relates to experimental provision technical field, specially a kind of Multifunctional resistance value measurement experiment device.
Background technique
Resistance value measurement experiment device is a kind of experiment dress for deepening student for the knowledge understanding of voltammetric determination resistance
It sets, in general, by operating the device, student will appreciate that the principle and voltammetric determination of voltammetric determination resistance substantially
When resistance source of error analysis, existing experimental provision be generally exactly by quick coupling connection power supply, slide rheostat,
Voltmeter, ammeter and testing resistance assemble, although which realizes the function of voltammetric determination resistance wire resistance value
Can, but the function of the resistance wire change in resistance under different temperatures can not easily be measured.
Utility model content
The purpose of this utility model is to provide one kind can allow student that can either easily adjust testing resistance silk temperature
Measuring resistance experimental provision.
For this purpose, the utility model adopts the following technical solution: a kind of Multifunctional resistance value measurement experiment dress
It sets, including bottom plate, the constant temperature mechanism in the middle part of bottom plate, the resistance wire winding roller on the left of bottom plate, is set on the right side of bottom plate
Spring carrier arm, the voltmeter, ammeter and the slide rheostat set on the bottom plate upper right corner that are set on the bottom plate portion, the bottom
Plate lower edge is additionally provided with digital display thermometer, and liquid nitrogen release device, the liquid nitrogen release dress are additionally provided on the downside of the digital display thermometer
It sets including the liquid nitrogen bottle for holding liquid nitrogen and the interface deck for installing liquid nitrogen bottle, the constant temperature mechanism includes several tempering
Glass enclosure open-topped square box made of covering, set on square box two sides metal clip, be set to the intracorporal electricity of square box
The electrodeless switch of heating rod and control heating rod current switching and electrical current size, be equipped at the top of the square box with
Square box side wall connects the top plate for making to upwardly open at the top of square box, the interface of the liquid nitrogen bottle using loose-leaf
Deck passes through inside square box described in pipeline connection, and the pipeline is equipped with the shut-off valve can be manually opened and closed, described
It is mounted on bottom plate on resistance wire winding roller by bracket, it is different to be wound with multiple groups thickness on the resistance wire winding roller
Resistance wire, the resistance wire can wind roller from resistance wire and pull out and pass through the metal clip that constant temperature mechanism is clamped in constant temperature mechanism
Both ends, the metal clip, voltmeter, ammeter, slide rheostat are equipped with positive terminal, negative terminal, the multi-functional electricity
Resistance value experimental provision further includes two groups of independent power supplys, wherein one group of power supply individually gives the electrically heated rod to power, another group of electricity
Source is for each positive terminal of own connection, negative terminal.
Further, the positive terminal, negative terminal surface are all made of surface gold-plating processing.
Further, the interface deck be equipped with anti-loose lock, the anti-loose lock can fastener residence state liquid nitrogen
Bottle.
Further, detent, the resistance wire winding are additionally provided on the bottom plate by the resistance wire winding roller
Cylinder bottom edge is equipped with spinous process, and the detent can snap on spinous process to prevent resistance wire winding roller rotation.
The utility model has the beneficial effects that: Multifunctional resistance value measurement experiment device provided by the utility model,
Both the functional requirement of the Middle School Physics resistance measurement with voltammetry of the prior art had been met, while having additionally provided and student is allowed further to measure
The function of resistance value under different temperatures and allow student easily measure different thicknesses degree resistance wire resistance value function,
The apparatus structure is compact, easily operated, can deepen error analysis of the student for voltammetric determination resistance value, Yi Jiwen significantly
Spend the understanding of the influence for resistance；In addition, the device is provided with liquid nitrogen cooling, it can quickly make experimental provision cooling, side
Just next bit student carries out identical experiment, to greatly save the waiting time of experiment.
Detailed description of the invention
Fig. 1 is the overall schematic of the utility model embodiment.
Fig. 2 is the thermostat schematic diagram of the utility model embodiment.
Fig. 3 is the thermostat side view of the utility model embodiment.
In figure:
1- bottom plate 2- constant temperature mechanism 3- resistance wire winds roller
4- spring carrier arm 5- voltmeter 6- ammeter
7- slide rheostat 8- digital display thermometer 9- liquid nitrogen release device
9a- liquid nitrogen bottle 9b- connector deck 2a- square box
The electrodeless switch of 2b- metal clip 2c- electrically heated rod 2d-
2e- top plate.
Specific embodiment
In the description of the present invention, it should be understood that the side of the instructions such as term "inner", "outside", "upper", "lower"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description the utility model and simplification is retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.
For the ease of the understanding of those skilled in the art, the utility model is made below with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
A kind of Multifunctional resistance value measurement experiment device as shown in Figs. 1-3, including bottom plate 1, the perseverance set on 1 middle part of bottom plate
Warm mechanism 2, the spring carrier arm 4 set on 1 right side of bottom plate, is set to 1 top of bottom plate at the resistance wire winding roller 3 set on 1 left side of bottom plate
Voltmeter 5, ammeter 6 and the slide rheostat 7 set on 1 upper right corner of bottom plate, 1 lower edge of bottom plate is additionally provided with detection
The digital display thermometer 8 of temperature in constant temperature mechanism 2 is additionally provided with liquid nitrogen release device 9, the liquid nitrogen on the downside of the digital display thermometer 8
Release device 9 includes the liquid nitrogen bottle 9a for the holding liquid nitrogen and interface deck 9b for installing liquid nitrogen bottle 9a, the constant temperature machine
Structure 2 include several tempered glass enclose cover made of open-topped square box 2a, the metal set on the two sidewalls square box 2a
Press from both sides 2b, electrically heated rod 2c in square box 2a and control electrically heated rod 2c current switching and electrical current size
It is equipped at the top of electrodeless switch 2d, the square box 2a and is connect using loose-leaf to make rectangular with square box 2a side wall upper edge
The interface deck 9b of the top plate 2e, the liquid nitrogen bottle 9a that can upwardly open at the top of cabinet 2a pass through square box described in pipeline connection
Inside body 2a, the pipeline is equipped with the shut-off valve can be manually opened and closed, and passes through bracket on the resistance wire winding roller 3
It is mounted on bottom plate 1, is wound with the different resistance wire of multiple groups thickness on resistance wire winding roller 3, the resistance wire can be with
The both ends metal clip 2b that constant temperature mechanism 2 is clamped in constant temperature mechanism 2, the metal clip are pulled out and passed through from resistance wire winding roller 3
2b, voltmeter 5, ammeter 6, slide rheostat 7 are equipped with positive terminal, negative terminal, the Multifunctional resistance value experiment dress
Setting further includes two groups of independent power supplys, wherein one group of power supply individually gives the electrically heated rod 2c to power, another group of power supply is used for certainly
There are connection positive terminal, negative terminal.
The application method of the utility model is, student before the experiments, needs first to start with conducting wire by power supply, sliding variable resistance
Device 7, electrically heated rod 2c, voltmeter 5, ammeter 6 and metal clip 2b are connected, and form a complete resistance measurement with voltammetry
Circuit, then Extract Resistance silk passes through constant temperature mechanism 2 and is clamped on metal clip 2b from resistance wire winding roller 3 again, at this moment
The resistance of resistance wire at room temperature can be measured according to the program of voltammetry measurement resistance according to the requirement of experimental design by waiting student
Value can control electricity by stirring electrodeless switch 2d and add if necessary to observe the resistance change of resistance wire under different temperatures
2 internal resistance wire of constant temperature mechanism is heated in the energization of hot pin 2c, to carry out the measurement of resistance value.And work as a upper student
After finishing experiment, the temperature in possible constant temperature mechanism 2 is higher than room temperature, and at this time next student can be by discharging liquid nitrogen bottle
Liquid nitrogen in 9a cools down for constant temperature mechanism 2, in this way, being considerably reduced the waiting time of experiment.
It is in general, existing in order to further allow student to understand influence of the sectional area of resistance wire for resistance value
The experimental provision of design is realized by way of replace resistance wire, and unquestionable this mode be easy to cause resistance wire to lose
It loses or the multiple folding and unfolding of resistance wire is fractureed unintentionally later, and influence the progress of next bit student experimenting, be based on this, inventor thinks
Roller 3 is wound to one resistance wire with multiple resistance wire wound portions of setting, so that replacement resistance wire is very convenient.
Further, the positive terminal, negative terminal surface are all made of surface gold-plating processing.Since experimental provision needs
Conducting wire is repeatedly plugged, therefore inventor expects carrying out positive and negative binding post gold-plated processing, it is more this makes it possible to substantially reduce
The poor contact phenomenon that may cause after the secondary positive and negative binding post of plug.
Further, the interface deck 9b be equipped with anti-loose lock, the anti-loose lock can fastener residence state liquid
Nitrogen bottle 9a.Liquefied ammonia bottle loosens in use in order to prevent, and inventor is provided with anti-loose lock also on interface deck 9b,
Liquid nitrogen bottle 9a is lived by latching fastener, to prevent liquid nitrogen bottle from revealing because loosening.
Further, detent, the resistance wire winding rolling are additionally provided on the bottom plate on 3 side of resistance wire winding roller
Cylinder bottom margin is equipped with spinous process, and the detent can snap on spinous process to prevent resistance wire winding roller 3 from rotating.?
In the installation process of resistance wire, needs to pull out resistance wire from resistance wire winding roller 3 and pass through constant temperature mechanism 2, then again
Resistance wire is hung on spring carrier arm 4, in order to make resistance wire be tensioned, it may be necessary to the hand steered firmly resistance wire winding rolling of experimenter
Cylinder 3, then clamps resistance wire using metal clip 2b, this process brings operational difficulty to experimenter, therefore, invention
Artificial resistance wire winding roller is provided with a detent, winds roller 3 by the pawl come limiting resistance silk and rotates backward
And resistance wire is caused to loosen, thus enormously simplify the operation difficulty of experimenter.
In short, resistance value measurement experiment device provided by the utility model, convenient and practical, different temperatures can either be measured
Resistance value under variation
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model under the premise of not departing from the technical program design
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the improvement of the utility model compared with the existing technology it
Place, some attached drawings of the utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, the element that those of ordinary skill in the art should be aware that these are omitted also may make up the interior of the utility model
Hold.
Claims (4)
1. a kind of Multifunctional resistance value measurement experiment device, it is characterised in that: including bottom plate (1), the perseverance being set in the middle part of bottom plate (1)
Warm mechanism (2), the spring carrier arm (4) being set on the right side of bottom plate (1), sets resistance wire winding roller (3) being set on the left of bottom plate (1)
It is described in the voltmeter (5) on bottom plate (1) top, ammeter (6) and the slide rheostat (7) for being set to bottom plate (1) upper right corner
Bottom plate (1) lower part is additionally provided with digital display thermometer (8), is additionally provided with liquid nitrogen release device (9), institute on the downside of the digital display thermometer (8)
Stating liquid nitrogen release device (9) includes the interface deck for holding the liquid nitrogen bottle of liquid nitrogen (9a) and for installing liquid nitrogen bottle (9a)
(9b), the constant temperature mechanism (2) include several tempered glass enclose cover made of open-topped square box (2a), be set to it is rectangular
The metal clip (2b) of the two sides cabinet (2a), the electrically heated rod (2c) being set in square box (2a) and control electrically heated rod electric current
The electrodeless switch (2d) of on-off and electrical current size, square box (2a) top is equipped with and square box (2a) side wall
The top plate (2e) for making to upwardly open at the top of square box (2a), the interface of the liquid nitrogen bottle (9a) are connected using loose-leaf
Deck (9b) is internal by square box (2a) described in pipeline connection, and the pipeline is equipped with the cut-off can be manually opened and closed
Valve, the resistance wire wind and are mounted on bottom plate (1) on roller (3) by bracket, wind on resistance wire winding roller (3)
The resistance wire for having multiple groups thickness different, the resistance wire can wind roller (3) from resistance wire and pull out and pass through constant temperature mechanism (2)
It is clamped on the metal clip (2b) at constant temperature mechanism (2) both ends, the metal clip (2b), voltmeter (5), ammeter (6), sliding become
Resistance device (7) is equipped with positive terminal, negative terminal, and the Multifunctional resistance value experimental provision further includes two groups of independent power supplys,
Wherein one group of power supply individually gives the electrically heated rod (2c) to power, and another group of power supply is for connecting each positive terminal, negative terminal.
2. Multifunctional resistance value measurement experiment device according to claim 1, it is characterised in that: the positive terminal is born
Binding post surface is all made of surface gold-plating processing.
3. Multifunctional resistance value measurement experiment device according to claim 1, it is characterised in that: the interface deck (9b)
Be equipped with anti-loose lock, the anti-loose lock can fastener residence state liquid nitrogen bottle (9a).
4. Multifunctional resistance value measurement experiment device according to claim 1, it is characterised in that: the resistance wire winding rolling
Detent is additionally provided on the other bottom plate (1) of cylinder (3), resistance wire winding roller (3) bottom margin is equipped with spinous process, described to stop
Pawl can snap on spinous process to prevent resistance wire winding roller (3) rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721764861.2U CN209168496U (en) | 2017-12-18 | 2017-12-18 | A kind of Multifunctional resistance value measurement experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721764861.2U CN209168496U (en) | 2017-12-18 | 2017-12-18 | A kind of Multifunctional resistance value measurement experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209168496U true CN209168496U (en) | 2019-07-26 |
Family
ID=67326050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721764861.2U Expired - Fee Related CN209168496U (en) | 2017-12-18 | 2017-12-18 | A kind of Multifunctional resistance value measurement experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209168496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890006A (en) * | 2019-12-06 | 2020-03-17 | 宁波工程学院 | Project-based digital system experiment box and experiment method |
-
2017
- 2017-12-18 CN CN201721764861.2U patent/CN209168496U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890006A (en) * | 2019-12-06 | 2020-03-17 | 宁波工程学院 | Project-based digital system experiment box and experiment method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190726 Termination date: 20191218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |