CN216349329U

CN216349329U - Pressure instrument with high measurement accuracy

Info

Publication number: CN216349329U
Application number: CN202122698083.4U
Authority: CN
Inventors: 於志俊
Original assignee: Ningbo Qiushu Apparatus And Instrument Co ltd
Current assignee: Ningbo Qiushu Apparatus And Instrument Co ltd
Priority date: 2021-11-05
Filing date: 2021-11-05
Publication date: 2022-04-19
Anticipated expiration: 2031-11-05

Abstract

The utility model discloses a pressure instrument with high measurement precision, which comprises a shell, wherein a dial plate is arranged on the inner side of the shell, the circumferential surface of the shell is connected with an alarm triggering mechanism, and the upper end of the alarm triggering mechanism is fixedly provided with an alarm. According to the utility model, the alarm triggering mechanism and the alarm are arranged, when the pressure in the meter is too high, the air pressure rushes open the sealing gasket, so that the return spring is compressed, the ejector rod slides along the inner wall of the guide sleeve and is contacted with the trigger switch in the guide sleeve, the alarm is started and an alarm is given out, and the pressure meter has an alarm function; the protection box is arranged at the lower end of the pressure gauge, the pressure gauge is protected by the air cushion and the buffer structure in the box, vibration generated when the pressure gauge is collided can be absorbed when the pressure gauge is collided, the pointer can be kept stable, the measurement precision is improved, and the damage to the internal structure of the pressure gauge can be avoided, so that the service life of the pressure gauge can be prolonged.

Description

Pressure instrument with high measurement accuracy

Technical Field

The utility model relates to the technical field of pressure instruments, in particular to a pressure instrument with high measurement precision.

Background

The pressure instrument is an instrument which takes an elastic element as a sensitive element and measures and indicates the pressure higher than the ambient pressure, the application is very common, the pressure instrument can be seen everywhere in the fields of heating power pipe networks, oil and gas transmission, water and gas supply systems and the like, and the mechanical pressure gauge is more and more widely applied due to the characteristics of high mechanical strength, convenient production and the like of the elastic sensitive element of the mechanical pressure gauge.

When the user carries out the pressure measurement to equipment pressure, need use pressure instrument, however traditional pressure instrument does not possess the alarm function, when the inside pressure of equipment was too big, not only caused pressure instrument to take place to damage easily, still takes place the incident easily, for this reason, provides a pressure instrument that measurement accuracy is high.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a pressure instrument with high measurement precision, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a pressure instrument with high measurement precision comprises a shell, a dial is arranged on the inner side of the shell, the surface of the dial plate is provided with a clamping column, the surface of the clamping column is connected with a pointer, the circumferential surface of the shell is connected with an alarm triggering mechanism, the alarm triggering mechanism comprises a connecting box, the connecting box is fixed on the surface of the shell in a welding mode, the inner side of the connecting box is connected with a guide sleeve, the inner part of the guide sleeve is of a hollow structure, the inner side of the guide sleeve is connected with a mandril which slides along the inner side of the guide sleeve, the inner side of the guide sleeve is provided with a trigger switch close to the tail end of the mandril, the trigger switch is fixedly attached to the inner wall of the connecting box, the top end of the ejector rod is provided with a sealing gasket, the sealing gasket is of a circular truncated cone structure, a reset spring is sleeved at the tail end, close to the sealing gasket, of the surface of the ejector rod, and an alarm is fixedly mounted at the upper end of the alarm triggering mechanism.

Preferably, reset spring's one end is contradicted on the surface of uide bushing, and the other end is contradicted on sealed surperficial of filling up to along the surperficial slip of ejector pin, the pressure release hole has been seted up to the corresponding sealed position of filling up in surface of shell, and sealed pad activity under reset spring extends to in the pressure release hole to laminate with the pressure release downthehole wall, reset spring makes under natural state between ejector pin and the trigger switch non-contact.

Preferably, the alarm is connected with the alarm triggering mechanism through an electric signal.

Preferably, the dial is embedded on the inner wall of the shell in a clamping manner, the clamping column penetrates through the pointer and is connected with the dial, and the surface of the inner side of the shell, which is close to the pointer, is provided with transparent glass, and the transparent glass is embedded on the inner wall of the shell in a clamping manner.

Preferably, the lower extreme of shell is connected with the guard box, the inboard of guard box is provided with buffer structure and air cushion, and the air cushion laminating is on the surface of shell, buffer structure's quantity is a plurality of groups to be equidistant range along the inner wall of guard box, buffer structure includes piston tube, piston post, backup pad and buffer spring.

Preferably, the piston pipe fixed mounting is at the internal surface of guard box, the piston post is connected in the inboard of piston pipe to slide along the inner wall of piston pipe, backup pad fixed mounting is on the top of piston post to with the lower extreme laminating of air cushion, buffer spring activity cup joints the surface at the piston post, and buffer spring's upper end is connected with the backup pad, and the lower extreme is connected with the piston pipe.

Preferably, the lower end of the shell is connected with a connecting column, the upper end of the connecting column penetrates through the shell and is communicated with the inside of the shell, the lower end of the connecting column penetrates through the air cushion and the protection box, and threads are arranged on the surface of the lower end of the connecting column.

Compared with the prior art, the utility model has the following beneficial effects:

(1) according to the pressure instrument, the alarm triggering mechanism and the alarm are arranged, when the pressure in the instrument is too high, the air pressure rushes the sealing gasket, so that the return spring is compressed, the ejector rod slides along the inner wall of the guide sleeve and is in contact with the trigger switch in the guide sleeve, the alarm is started, an alarm is given out, and the pressure instrument has an alarm function.

(2) According to the utility model, the protection box is arranged at the lower end of the pressure gauge, the pressure gauge is protected by the air cushion and the buffer structure in the box, vibration generated during collision can be absorbed when the pressure gauge is collided, the stability of the pointer can be maintained, the measurement precision is improved, and the damage to the internal structure of the pressure gauge can be avoided, so that the service life of the pressure gauge can be prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of a pressure gauge with high measurement accuracy according to the present invention;

FIG. 2 is a schematic structural diagram of a partial structure of a pressure gauge with high measurement accuracy according to the present invention;

FIG. 3 is a sectional view of a protective box in a pressure gauge with high measurement accuracy according to the present invention;

FIG. 4 is a schematic diagram of the internal structure of an alarm triggering mechanism in a pressure gauge with high measurement accuracy according to the present invention;

fig. 5 is a sectional view of an alarm triggering mechanism in a pressure gauge with high measurement accuracy according to the present invention.

In the figure: 1. a housing; 2. a dial plate; 3. clamping a column; 4. a pointer; 5. connecting columns; 6. an alarm triggering mechanism; 61. a connecting box; 62. a guide sleeve; 63. a top rod; 64. a gasket; 65. a return spring; 66. a trigger switch; 7. an alarm; 8. a protection box; 9. a buffer structure; 91. a piston tube; 92. a piston post; 93. a support plate; 94. a buffer spring; 10. an air cushion.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply 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 invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-5, a pressure instrument that measurement accuracy is high, including shell 1, the inboard of shell 1 is provided with dial plate 2, dial plate 2 inlay card is on the inner wall of shell 1, the surface of dial plate 2 is provided with clamping post 3, the surface connection of clamping post 3 has pointer 4, clamping post 3 runs through in pointer 4, and be connected with dial plate 2, the inboard surface that is close to pointer 4 of shell 1 is provided with clear glass, conveniently observe pressure instrument's pointer 4, and the clear glass inlay card is at the inner wall of shell 1, the lower extreme of shell 1 is connected with spliced pole 5, the upper end of spliced pole 5 runs through in shell 1, and communicate with the inside of shell 1, the lower extreme of spliced pole 5 runs through in air cushion 10 and guard box 8, and be equipped with the screw thread on the lower extreme surface, conveniently install pressure instrument on the equipment that awaits measuring.

The periphery of the shell 1 is connected with an alarm trigger mechanism 6 which can trigger an alarm 7, the alarm trigger mechanism 6 comprises a connecting box 61, the alarm trigger mechanism 6 can be installed on a pressure instrument, the connecting box 61 is fixed on the surface of the shell 1 in a welding mode, the inner side of the connecting box 61 is connected with a guide sleeve 62, the inner part of the guide sleeve 62 is of a hollow structure, the inner side of the guide sleeve 62 is connected with a mandril 63, the mandril 63 slides along the inner side of the guide sleeve 62, the trigger switch 66 can be moved along the inner side of the guide sleeve 62 through the mandril 63, the inner side of the guide sleeve 62 is provided with the trigger switch 66 close to the tail end of the mandril 63, the trigger switch 66 is fixedly attached to the inner wall of the connecting box 61, the top end of the mandril 63 is provided with a sealing gasket 64 for sealing the pressure relief hole, so that the pressure relief hole is in a normally closed state and the sealing performance of the pressure relief hole is ensured, and the sealing gasket 64 is of a circular truncated cone structure, the surface of ejector pin 63 has cup jointed reset spring 65 near sealed end that fills up 64, reset spring 65's one end is contradicted on the surface of uide bushing 62, the other end is contradicted on the surface of sealed pad 64, and along ejector pin 63's surface sliding, the pressure release hole has been seted up to the corresponding sealed position that fills up 64 in surface of shell 1, and sealed pad 64 is movable under reset spring 65's effect and is extended to in the pressure release hole, and with the laminating of pressure release downthehole wall, reset spring 65 makes non-contact between ejector pin 63 and the trigger switch 66 under natural state, guarantee that trigger switch 66 is in normally open state, alarm trigger mechanism 6's upper end fixed mounting has alarm 7, pass through signal connection between alarm 7 and the alarm trigger mechanism 6.

The lower end of the shell 1 is connected with a protection box 8, the inner side of the protection box 8 is provided with a buffer structure 9 and an air cushion 10 which can protect a pressure instrument, the air cushion 10 is attached on the surface of the shell 1, the number of the buffer structures 9 is a plurality of groups and is arranged at equal intervals along the inner wall of the protection box 8, the absorption effect of the pressure instrument on vibration when being collided is increased, the stability of the pressure instrument during measurement is improved, the measurement precision is ensured, the buffer structure 9 comprises a piston tube 91, a piston column 92, a support plate 93 and a buffer spring 94, the piston tube 91 is fixedly arranged on the inner surface of the protection box 8, the piston column 92 is connected on the inner side of the piston tube 91 and slides along the inner wall of the piston tube 91, the support plate 93 is fixedly arranged at the top end of the piston column 92 and is attached with the lower end of the air cushion 10, the buffer spring 94 is movably sleeved on the surface of the piston column 92, and the upper end of the buffer spring 94 is connected with the support plate 93, the lower end is connected to the piston tube 91.

It should be noted that the utility model is a pressure instrument with high measurement accuracy, when the pressure instrument needs to be used, the pressure instrument is firstly installed on the measured equipment through the connecting column 5, then the pressure is introduced into the pressure instrument through the connecting column 5, the surface and the pointer 4 are matched, the internal pressure of the equipment is measured in real time, when the internal pressure of the equipment exceeds the measured value, the air pressure rushes open the sealing gasket 64 at the pressure relief hole to enter the alarm triggering mechanism 6, when the pressure relief valve is rushed open, the ejector rod 63 is driven to extrude the return spring 65, the ejector rod 63 moves along the inside of the guide sleeve 62, so that the tail end of the ejector rod 63 is contacted with the trigger switch 66, the alarm 7 is opened, the alarm is triggered, the working personnel is reminded to discharge the pressure and relieve the pressure in time, when the pressure instrument is collided in the measurement process, the pressure instrument generates vibration, and the pressure instrument transmits the vibration to the inflatable cushion 10, the vibration of the part is absorbed under the action of the inflatable cushion 10, so that the vibration is weakened, the inflatable cushion 10 continuously transmits the vibration to the buffer structure 9, and the vibration is completely absorbed under the action of the buffer structure 9, so that the stability of the pressure instrument is ensured, and the measurement precision is improved.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A pressure instrument with high measurement accuracy comprises a shell (1), and is characterized in that: the inside of shell (1) is provided with dial plate (2), the surface of dial plate (2) is provided with clamping post (3), the surface of clamping post (3) is connected with pointer (4), the periphery of shell (1) is connected with alarm trigger mechanism (6), alarm trigger mechanism (6) includes connecting box (61), and connecting box (61) pass through welded fastening on the surface of shell (1), the inboard of connecting box (61) is connected with uide bushing (62), and the inside of uide bushing (62) is hollow structure, the inboard of uide bushing (62) is connected with ejector pin (63), ejector pin (63) slide along the inboard of uide bushing (62), the inboard end that is close to ejector pin (63) of uide bushing (62) is provided with trigger switch (66), and trigger switch (66) fixed laminating is on the inner wall of connecting box (61), the top of ejector pin (63) is provided with sealed pad (64), sealed pad (64) are the round platform structure, reset spring (65) have been cup jointed near sealed pad (64)'s end on the surface of ejector pin (63), the upper end fixed mounting of alarm trigger mechanism (6) has alarm (7).

2. A pressure gauge having high measurement accuracy according to claim 1, wherein: the one end of reset spring (65) is contradicted on the surface of uide bushing (62), and the other end is contradicted on the surface of sealed pad (64) to along the surperficial slip of ejector pin (63), the pressure release hole has been seted up to the position that the surface of shell (1) corresponds sealed pad (64), and sealed pad (64) activity under reset spring (65) extends to in the pressure release hole to laminate with the pressure release downthehole wall, reset spring (65) make under natural state between ejector pin (63) and trigger switch (66) non-contact.

3. A pressure gauge having high measurement accuracy according to claim 1, wherein: the alarm (7) is connected with the alarm triggering mechanism (6) through an electric signal.

4. A pressure gauge having high measurement accuracy according to claim 1, wherein: the dial plate (2) is clamped on the inner wall of the shell (1), the clamping column (3) penetrates through the pointer (4) and is connected with the dial plate (2), transparent glass is arranged on the surface, close to the pointer (4), of the inner side of the shell (1), and the transparent glass is clamped on the inner wall of the shell (1).

5. A pressure gauge having high measurement accuracy according to claim 1, wherein: the lower extreme of shell (1) is connected with guard box (8), the inboard of guard box (8) is provided with buffer structure (9) and air cushion (10), and air cushion (10) laminating on the surface of shell (1), the quantity of buffer structure (9) is a plurality of groups to be equidistant range along the inner wall of guard box (8), buffer structure (9) include piston tube (91), piston post (92), backup pad (93) and buffer spring (94).

6. A pressure gauge with high measurement accuracy according to claim 5, wherein: piston pipe (91) fixed mounting is at the internal surface of guard box (8), the inboard at piston pipe (91) is connected in piston post (92) to slide along the inner wall of piston pipe (91), backup pad (93) fixed mounting is on the top of piston post (92) to with the lower extreme laminating of air cushion (10), buffer spring (94) activity cup joints the surface at piston post (92), and buffer spring (94) upper end is connected with backup pad (93), and the lower extreme is connected with piston pipe (91).

7. A pressure gauge with high measurement accuracy according to claim 5, wherein: the lower extreme of shell (1) is connected with spliced pole (5), the upper end of spliced pole (5) runs through in shell (1) to with the inside intercommunication of shell (1), the lower extreme of spliced pole (5) runs through in air cushion (10) and guard box (8), and is equipped with the screw thread on the lower extreme surface.