CN111578974A - Observation device for pointer instrument - Google Patents

Abstract

The invention discloses an observation device of a pointer type instrument, comprising a mounting ring and a safety pointer arranged on the mounting ring. The mounting ring comprises a ring body and a mounting cavity located in the ring body, and the mounting cavity is used for accommodating the dial of the pointer type meter. The ring body is sleeved on the dial side of the pointer type instrument, one end of the safety pointer is connected with the ring body, and the other end extends toward the central axis of the installation cavity. The safety pointer includes a first safety pointer and a second safety pointer. The first safety pointer and the The second safety pointers are distributed at intervals along the surrounding direction of the ring body, the first safety pointer and the second safety pointer are both adjacent to the dial of the pointer type instrument on the side with the scale line, and the first safety pointer is located on the dial of the pointer type instrument The position of the rated minimum value, the second safety pointer is located in the position of the rated maximum value of the dial of the analog meter. The observation device can effectively improve the speed of inspection and reduce the difficulty of inspection.

Description

Observation device for pointer meter

technical field

The invention relates to the technical field of auxiliary tools, in particular to an observation device of a pointer type instrument.

Background technique

Equipment in substations and various industrial places are usually equipped with pointer instruments for displaying parameters such as pressure, temperature, voltage and current. During actual measurement, the reading pointers of various pointer instruments will be within the rated value range due to the operation of the equipment. float.

In some places, in order to ensure the normal operation of the equipment, it is necessary to inspect all kinds of pointer meters on the equipment to ensure that the reading pointer is within the rated value range. In the prior art, the inspection of the pointer type instrument is to first read the accurate value of the pointer type instrument, and then judge whether the read accurate value is within the rated range of the parameter. This inspection method has the following shortcomings: 1. It is necessary to read the accurate value on the pointer meter in each inspection, and the overall inspection efficiency is low; 2. For the pointer meter installed farther, it is difficult to read the accurate value of the pointer Larger, and even in some places the pointer meter requires a telescope to read.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an observation device of a pointer type instrument to overcome at least one of the deficiencies in the prior art.

To achieve this purpose, the present invention adopts the following technical solutions:

An observation device for a pointer-type instrument is provided, comprising a mounting ring and a safety pointer arranged on the mounting ring, the mounting ring includes a ring body and a mounting cavity located in the ring body, and the mounting cavity is used for accommodating the pointer The dial of the type instrument, the ring body is sleeved on the side of the dial of the pointer type instrument, one end of the safety pointer is connected with the ring body, and the other end extends toward the central axis of the installation cavity, and the safety pointer includes There are a first safety pointer and a second safety pointer, the first safety pointer and the second safety pointer are respectively distributed along the circumferential direction of the ring body, and the first safety pointer and the second safety pointer are adjacent to each other. On the side of the dial of the pointer-type meter that is provided with a scale line, the first safety pointer is located at the minimum rated value of the dial of the pointer-type meter, and the second safety pointer is located on the dial of the pointer-type meter. The position of the rated maximum value.

As a preferred technical solution of the observation device of the pointer-type meter, the ring body is detachably connected to the dial of the pointer-type meter through a first fastener, and the ring body is provided with a first thread therethrough. The first fastener is screwed into the first threaded hole, and one end of the first fastener extends into the installation cavity and is pressed against the side surface of the dial of the pointer type instrument.

As a preferred technical solution of the observation device of the pointer-type meter, the ring body is made of rubber, and the size of the installation cavity is smaller than the size of the dial of the pointer-type meter.

As a preferred technical solution of the observation device of the pointer type instrument, both ends of the ring body respectively have a first connector and a second connector, and the first connector and the second connector connect.

As a preferred technical solution of the observation device of the pointer type instrument, the first safety pointer and the second safety pointer both have a pointer part and a connecting part connected with the ring body, and the pointer part is connected to the ring body. The connecting portion is arranged at an included angle, the connecting portion is located on a side of the ring body away from the mounting cavity, one end of the pointer portion is connected to the connecting portion, and the other end extends toward the central axis of the mounting cavity .

As a preferred technical solution of the observation device for the pointer type instrument, the connecting portion and the ring body are connected by a second fastener, and the ring body is provided with a second threaded hole, and the ring body is provided with a second threaded hole. The connecting portion is provided with a third threaded hole corresponding to the second threaded hole, and the second fastener is screwed into the second threaded hole and the third threaded hole.

As a preferred technical solution of the observation device of the pointer type instrument, the ring body is provided with a positioning groove, the connecting portion is arranged in the positioning groove, and the connecting portion has a first magnet A second magnet piece that is mutually adsorbed with the first magnet piece is fixedly arranged in the positioning groove.

As a preferred technical solution of the observation device of the pointer type instrument, the surface of the pointer portion is provided with a buffer glue layer.

As a preferred technical solution of the observation device for the pointer-type instrument, the ring body is provided with a lighting lamp.

As a preferred technical solution of the observation device of the pointer type instrument, it also includes a water droplet dispersing component, and the water droplet dispersing component includes a hot air spray head on a ring body, the ring body is close to the installation cavity. One side is provided with an air injection hole, the air outlet of the hot air nozzle is communicated with the air injection hole, and the hot air nozzle is connected to an external hot air supply component through an air delivery pipe.

The beneficial effects of the present invention are as follows: in the process of inspection, the inspector only needs to judge whether the reading pointer of the pointer type instrument is located in the area between the first safety pointer and the second safety pointer, and then the pointer type meter can be quickly judged. Whether the measured value is normal, it is not necessary to read the accurate value of the pointer measuring instrument, which effectively improves the speed of inspection and reduces the difficulty of inspection.

Description of drawings

The present invention will be described in further detail below according to the accompanying drawings and embodiments.

FIG. 1 is a schematic diagram of the overall structure of the observation device of the pointer type instrument according to the embodiment.

FIG. 2 is a schematic structural diagram of the ring body according to an embodiment.

FIG. 3 is a schematic structural diagram of the ring body according to another embodiment.

FIG. 4 is a schematic structural diagram of the ring body according to still another embodiment.

FIG. 5 is a partial cross-sectional view of the ring body according to still another embodiment.

FIG. 6 is a partial cross-sectional view of the ring body according to still another embodiment.

In the picture:

1. Ring body; 101. Positioning groove; 102, groove bottom; 103, groove side wall; 104, baffle plate; 105, cavity; head; 109, air injection hole; 2, installation cavity; 3, safety pointer; 301, pointer part; 302, connecting part; 4, first fastener; 5, second fastener; 6, snap hole; 7 8. The first velcro patch; 9. The second velcro patch; 10. The hot air nozzle; 11, the battery; 12, the gas pipe.

Detailed ways

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

As shown in FIG. 1 to FIG. 6 , the present invention provides an observation device for a pointer type instrument, which includes a mounting ring and a safety pointer 3 arranged on the mounting ring. The mounting ring includes a ring body 1 and a safety pointer 3 located on the ring. The installation cavity 2 in the body 1 is used to accommodate the dial of the pointer type instrument, the ring body 1 is sleeved on the side of the dial of the pointer type instrument, and one end of the safety pointer 3 is connected to the ring. The body 1 is connected, and the other end extends toward the central axis of the installation cavity 2. The safety pointer 3 includes a first safety pointer and a second safety pointer, and the first safety pointer and the second safety pointer are respectively along the The circumferential direction of the ring body 1 is spaced apart, the first safety pointer and the second safety pointer are both adjacent to the dial of the pointer-type meter where the scale line is provided, and the first safety pointer is located on the pointer The second safety pointer is located at the position of the rated maximum value of the dial of the pointer type instrument.

In this specification, the position of the rated minimum value of the dial of the pointer-type meter refers to the position of the scale line where the reading pointer is when the pointer-type meter measures the minimum measurement value under normal operation of the equipment; the pointer-type meter The position of the rated maximum value of the dial of the meter refers to the position of the scale line where the reading pointer is when the pointer meter measures the maximum measurement value when the equipment is in normal operation. A first safety pointer and a second safety pointer are arranged on the ring body 1, the first safety pointer is located at the position of the rated minimum value of the dial of the pointer-type meter, and the second safety pointer is located at the rated maximum value of the dial of the pointer-type meter. position, the area between the first safety pointer and the second safety pointer belongs to the mapped reading is the rated value range of the pointer meter, if the reading pointer of the pointer meter is not between the first safety pointer and the second safety pointer and If it is close to the first safety pointer, it means that the parameter value in the corresponding device measured by the pointer meter is low. If the reading pointer of the pointer meter is not between the first safety pointer and the second safety pointer and is close to the second safety pointer, it means that the pointer The parameter value in the corresponding device measured by the type instrument is too high. Taking the pointer meter as an example of a voltmeter, when the equipment is running, if the reading pointer of the voltmeter is located in the area between the first safety pointer and the second safety pointer, it means that the voltage of the equipment is normal. If it is located in the area outside the first safety pointer and the second safety pointer and is close to the first safety pointer, it means that the voltage of the device is low. If the reading pointer of the voltmeter is located in the area outside the first safety pointer and the second safety pointer and When it is close to the second safety pointer, it means that the voltage of the device is too high. During the inspection process, the inspectors only need to judge whether the reading pointer of the pointer meter is located in the area between the first safety pointer and the second safety pointer, and then they can quickly judge whether the measurement value measured by the pointer meter is normal or not. It is not necessary to read the accurate value of the pointer measuring instrument, which effectively improves the speed of inspection and reduces the difficulty of inspection.

To facilitate distinguishing the first security pointer and the second security pointer, the first security pointer and the second security pointer may be set to different colors.

In one embodiment, as shown in FIG. 1 , the ring body 1 is detachably connected to the dial of the analog meter through a first fastener 4 , and a first threaded hole is formed through the ring body 1 . The first fastener 4 is screwed into the first threaded hole, and one end of the first fastener 4 extends into the installation cavity 2 and is tightly abutted against the dial side of the analog meter. The ring body 1 is detachably mounted on the pointer-type meter by pressing the first fastener 4 against the dial side of the pointer-type meter. In a specific actual design, the size of the installation cavity 2 can be slightly larger than that of the pointer meter, so that there is enough space to set the ring body 1 on the side of the dial of the pointer meter. The first fastener 4 is a fastening bolt or a fastening screw. In this embodiment, the first fastener 4 is a butterfly bolt, and one end of the butterfly bolt has an adjustment handle. In specific use, the end of the butterfly bolt can be tightly pressed against the dial by adjusting the adjustment handle.

Preferably, the ring body 1 is detachably connected to the dial of the analog meter through two first fasteners 4, and the ring body 1 is provided with two first threaded holes spaced apart, and the included angle between the two first threaded holes is is 180°.

Optionally, the ring body 1 is detachably connected to the dial of the analog meter through three first fasteners 4 , the ring body 1 is provided with three first threaded holes, and the three first threaded holes are along the ring body 1 . The winding directions are spaced apart, and the spacing between the two adjacent first threaded holes is equal, and the three first fasteners 4 are used to position the mounting ring on the dial to prevent the left, right, and top of the mounting ring from occurring. , lower offset, to ensure that the dial is in the center of the mounting ring. In other embodiments, the number of the first fasteners 4 can be flexibly designed as required, the first threaded holes correspond to the first fasteners 4 one-to-one, and the space between two adjacent first threaded holes The spacing can also be flexibly adjusted.

In this embodiment, the ring body 1 is made of stainless steel. Of course, in other embodiments, the ring body 1 can also be made of rubber or plastic material.

When the ring body 1 is made of rubber, the size of the mounting cavity 2 is smaller than the size of the dial of the analog meter. Since rubber has good elasticity, in specific use, the ring body 1 can be pulled by external force to elastically deform the ring body 1 and set the ring body 1 to the side of the dial. After the external force is removed, the ring body 1 has the ability to restore elastic deformation. trend, which in turn fits tightly on the dial. The ring body 1 made of this material can be detachably installed on the mounting plate without using fasteners, which facilitates the disassembly of the observation device.

In another embodiment, as shown in FIG. 2 and FIG. 3 , both ends of the ring body 1 have a first connector 107 and a second connector 108 respectively, and the first connector 107 is connected to the second connector Head 108 is connected. In this embodiment, the ring body 1 is a split structure. After the ring body 1 is sleeved on the side of the dial, the first connector 107 and the second connector 108 are connected to directly clamp the ring body 1 to the side of the dial. , the ring body 1 with this structure can flexibly adjust the size of the installation cavity 2 according to the size of the dial, which improves the application range of the ring body 1 .

Preferably, as shown in FIG. 2 , the first connector 107 and the second connector 108 can be detachably connected through a snap assembly. Specifically, the snap component includes a snap hole 6 and is connected to the snap The snap-fit protrusions 7 of the holes 6 are snap-fitted. One of the first connector 107 and the second connector 108 is provided with a snap hole 6 , and the other is provided with a snap protrusion 7 .

Optionally, as shown in FIG. 3 , the first connecting head 107 and the second connecting head 108 can be connected by a velcro assembly, and the velcro assembly includes the first velcro patch 8 and the first velcro patch. 8. Bonded second Velcro 9, one of the first connector 107 and the second connector 108 is provided with the first Velcro 8, and the other is provided with the second Velcro 9.

As shown in FIG. 1 , wherein, the first safety pointer and the second safety pointer both have a pointer part 301 and a connecting part 302 connected with the ring body 1 , and the pointer part 301 and the connecting part 302 are in the form of a clip Angle setting, the connecting part 302 is located on the side of the ring body 1 away from the installation cavity 2 , one end of the pointer part 301 is connected with the connecting part 302 , and the other end faces the center axis of the installation cavity 2 extend. In this embodiment, the included angle between the connecting portion 302 and the pointer portion 301 is 90°, and the connecting portion 302 is attached to the side of the ring body 1 away from the mounting cavity 2 , so that the cross-section of the pointer portion 301 and the ring body 1 are the same. parallel to prevent the pointer portion 301 from scratching the dial.

In one embodiment, the connecting portion 302 and the ring body 1 are connected by a second fastener 5 , the ring body 1 is provided with a second threaded hole, and the connecting portion 302 is provided with a second threaded hole. The second threaded hole corresponds to the third threaded hole, and the second fastener 5 is screwed into the second threaded hole and the third threaded hole to realize the detachable connection between the first safety pointer and the second safety pointer and the ring body 1 .

In this embodiment, the second fastener 5 is a butterfly bolt, and one end of the butterfly bolt has an adjustment handle, and the first safety pointer and the second safety pointer are easily disassembled and assembled through the adjustment handle of the second fastener 5 . In other implementations, the second fastening screw may also be other types of bolts, or the second fastening bolt may be a fastening screw.

In another embodiment, as shown in FIG. 4 and FIG. 5 , the ring body 1 is provided with a positioning groove 101 , the connecting portion 302 is arranged in the positioning groove 101 , and the connecting portion 302 is provided with a positioning groove 101 . For the first magnet piece, the positioning groove 101 is fixed with a second magnet piece that is mutually attracted with the first magnet piece. The connecting part 302 is connected with the ring body 1 through magnets, the first safety pointer and the second safety pointer can be installed at any position on the ring body 1, and the distance between the first safety pointer and the second safety pointer can be flexibly adjusted. This connection method enables the first safety pointer and the second safety pointer to be suitable for different rated range values of the pointer type instrument. The range of rated values required by different devices is different, so the positions of the rated minimum value and the rated maximum value of the dial of different pointer instruments are also different. Through the above design, the versatility of the observation device can be enhanced.

Specifically, the positioning groove 101 is an L-shaped groove, and the positioning groove 101 includes a groove side wall 103 and a groove bottom 102 , and the groove side wall 103 is located on the groove bottom 102 and away from the pointer portion. On one side of 301 , the positioning groove 101 of this structure is not provided with the side wall 103 on the side of the side wall 103 close to the pointer portion 301 , which prevents the side wall 103 from blocking the pointer portion 301 .

In the process of installing the observation device, in order to prevent the pointer part 301 from scratching the dial of the pointer type instrument, the surface of the pointer part 301 is provided with a buffer glue layer.

In order to clearly observe the reading pointer of the pointer-type meter even in a dim environment, the ring body 1 is provided with a lighting lamp. The setting of the lighting lamp can use the lighting lamp to illuminate the circumference of the ring body 1 and the dial of the pointer type instrument, so as to facilitate the observation of the specific position of the reading pointer.

Among them, the lighting is controlled by a control switch. Preferably, the control switch is a photosensitive switch, when the light is insufficient, the photosensitive switch automatically turns on the lighting lamp, and when the light is sufficient, the photosensitive switch automatically turns off the lighting lamp, which effectively saves energy.

In this embodiment, as shown in FIG. 6 , the ring body 1 is a hollow structure, and the ring body 1 has a cavity 105 therein. The cavity 105 is provided with a battery 11 for supplying power to the lighting lamp, and the battery 11 is an arc-shaped structure adapted to the shape of the ring body 1 . There are more than three lighting lamps, and all lighting lamps are annularly distributed. Of course, in other embodiments, one or two lighting lamps may also be provided.

Preferably, the surfaces of the first safety pointer and the second safety pointer are coated with a luminous layer, and the setting of the luminous layer is more convenient for inspectors to judge whether the reading of the pointer meter is within the rated value range.

When the analog meter is used in a humid environment, water droplets will condense on the surface of the glass plate of the dial, and the water droplets condensed on the glass plate will block the reading pointer inside the dial, so that the inspector cannot observe the reading pointer. In this embodiment, the observation device further includes a water droplet dispersing component, and the water droplet dispersing component includes a hot air nozzle 10 on the ring body 1 , and a side surface of the ring body 1 close to the installation cavity 2 is provided with a The air injection hole 109 , the air outlet of the hot air shower head 10 is communicated with the air injection hole 109 , and the hot air shower head 10 is connected to the external hot air supply component through the air pipe 12 . When water droplets appear on the glass plate of the dial, hot air is provided by the external hot air supply part, and the hot air is transported to the hot air nozzle 10 through the air pipe 12, and finally ejected from the air injection holes 109 on the ring body 1. The jetting holes 109, on the one hand, the jetted hot air can increase the temperature of the glass plate, preventing the formation of water droplets from condensing on the glass plate; Evaporation of water droplets.

Optionally, in the inner air channel 106 of the ring body 1, a side of the ring body 1 close to the installation cavity 2 is provided with a plurality of air injection holes 109, and the plurality of air injection holes 109 are annularly distributed. 109 and the hot air shower head 10 are respectively communicated with the gas delivery channel 106 . The ring body 1 with this structure can supply hot air to all the air injection holes 109 through one hot air nozzle 10 , which effectively saves the space of the ring body 1 .

Specifically, a baffle 104 is provided between the gas delivery channel 106 and the cavity 105 to prevent the gas delivery channel 106 and the cavity 105 from communicating with each other.

In the description herein, it should be understood that the terms "up", "down", "left", "right", etc. are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of description. and simplifies operation, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for distinction in description, and have no special meaning.

In the description of this specification, reference to the description of the terms "an embodiment", "example", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention middle. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The technical principle of the present invention has been described above with reference to the specific embodiments. These descriptions are only for explaining the principle of the present invention, and should not be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the present invention without creative efforts, and these methods will all fall within the protection scope of the present invention.

Claims (10)

1. An observation device of a pointer instrument is characterized by comprising a mounting ring and a safety pointer arranged on the mounting ring, wherein the mounting ring comprises a ring body and a mounting cavity positioned in the ring body, the mounting cavity is used for accommodating a dial plate of the pointer instrument, the ring body is sleeved on the side surface of the dial plate of the pointer instrument, one end of the safety pointer is connected with the ring body, the other end of the safety pointer extends towards the central axis of the mounting cavity, the safety pointer comprises a first safety pointer and a second safety pointer, the first safety pointer and the second safety pointer are respectively distributed at intervals along the surrounding direction of the ring body, the first safety pointer and the second safety pointer are both adjacent to one side of the dial plate of the pointer instrument, which is provided with scale marks, and the first safety pointer is positioned at the position of the rated minimum value of the dial plate of the pointer instrument, the second safety pointer is located at the position of the rated maximum value of the dial plate of the pointer instrument.

2. The pointer instrument observation device of claim 1, wherein the ring body is detachably connected to the dial of the pointer instrument by a first fastening member, the ring body has a first threaded hole formed therethrough, the first fastening member is screwed into the first threaded hole, and one end of the first fastening member extends into the mounting cavity and abuts against a side surface of the dial of the pointer instrument.

3. The pointer instrument observation device of claim 1, wherein the ring body is made of rubber, and the size of the mounting cavity is smaller than that of the dial plate of the pointer instrument.

4. The pointer instrument observation device of claim 1, wherein the two ends of the ring body are respectively provided with a first connector and a second connector, and the first connector is connected with the second connector.

5. The pointer instrument observation device of claim 1, wherein the first safety pointer and the second safety pointer each have a pointer portion and a connecting portion connected to the ring body, the pointer portion and the connecting portion are disposed at an included angle, the connecting portion is located on a side surface of the ring body away from the installation cavity, one end of the pointer portion is connected to the connecting portion, and the other end of the pointer portion extends toward a central axis of the installation cavity.

6. The pointer instrument observation device of claim 5, wherein the connection portion is connected to the ring body by a second fastening member, the ring body is provided with a second threaded hole, the connection portion is provided with a third threaded hole corresponding to the second threaded hole, and the second fastening member is screwed in the second threaded hole and the third threaded hole.

7. The pointer instrument observation device of claim 5, wherein the ring body is provided with a positioning groove, the connecting portion is provided in the positioning groove, the connecting portion has a first magnet piece, and a second magnet piece attached to the first magnet piece is fixedly provided in the positioning groove.

8. The pointer instrument observation device of claim 5, wherein a buffer glue layer is provided on the surface of the pointer part.

9. The pointer instrument observation apparatus of any one of claims 1 to 8, wherein an illumination lamp is provided on the ring body.

10. The observation device of a pointer instrument as claimed in any one of claims 1 to 8, further comprising a water drop dispersing component, wherein the water drop dispersing component comprises a hot air nozzle on a ring body, an air injection hole is arranged on one side surface of the ring body close to the installation cavity, an air outlet of the hot air nozzle is communicated with the air injection hole, and the hot air nozzle is connected with an external hot air supply component through an air delivery pipe.

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