CN211696786U - Anti-freezing and shock-absorbing bellows pressure gauge - Google Patents

Abstract

A freeze-proof and shock-absorbing corrugated pipe pressure gauge comprises a pressure gauge body and a shock absorption base, wherein the pressure gauge body is arranged on the shock absorption base; the pressure gauge body comprises a shell, a movement, a corrugated pipe, a connecting rod, a pointer, a dial plate and a pipeline; a flange is arranged outside the damping base, a loop bar is arranged above the damping base, a nut is arranged outside the loop bar, a joint is arranged above the nut, and a pressure gauge body is arranged above the joint; the pipeline runs through from last to down in proper order casing bottom, joint, loop bar, vibration damping mount. Frost damping's bellows manometer, structural design is reasonable, has good freeze proof effect, has improved the measurement accuracy under cold weather, can tolerate the pulsation of medium, impact and the sudden off-load in the environment severe vibration place, the shock attenuation is effectual, durable, application prospect is extensive.

Description

Anti-freezing and shock-absorbing bellows pressure gauge

Technical Field

The utility model relates to a pressure instrument technical field, concretely relates to freeze proof absorbing bellows pressure gauge.

Background

The bellows pressure gauge is a gauge which takes a bellows as a sensitive element and measures and indicates the pressure higher than the ambient pressure. The application of the bellows pressure gauge is very common, the application of the bellows pressure gauge almost extends to all the fields of industrial processes and scientific researches, and is visible everywhere in the fields of heat pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance shops and the like, and particularly in the industrial process control and technical measurement process, the bellows of the bellows pressure gauge has the characteristics of high mechanical strength, convenience in production and the like, so that the bellows pressure gauge is more and more widely applied. The bellows pressure meter transmits the pressure deformation to the pointer through the elastic deformation of the bellows in the meter and the switching mechanism of the movement in the meter, so that the pointer rotates to display the pressure.

In recent years, with the large-scale popularization and use of the bellows pressure gauge, the requirement of people on the bellows pressure gauge is higher and higher. Wherein, to the violent vibration place of environment, pressure instrument need tolerate the pulsation of medium, strike and unload suddenly, bellows manometer among the prior art generally is in pipeline department through manometer bottom direct threaded connection during the use, but mechanical vibrations will drive bellows manometer through the connecting pipe and shake, the bellows manometer receives the influence of vibrations and can lead to its reading error, thereby the accuracy that the influence detected is a little, and bellows manometer inside is equipped with liquid, long-term use back liquid can reduce, less messenger bellows manometer can break down when liquid, influence the use of bellows manometer, need purchase the manometer again, cause economic expenditure.

In addition, bellows pressure meter table internal member is all more accurate, and most all are metal parts, it is serious to receive expend with heat and contract with cold, in the pipe network construction of present stage, some pipe networks are under outdoor, in chilly winter, outdoor temperature is lower, inside cold air gets into bellows pressure meter through heat-conduction, make partial part temperature step-down, lead to the operation not smooth, thereby lead to measuring accurate inadequately, the way that has appeared increasing the protection box outside bellows pressure meter at present stage comes to keep out the influence of external cold air to the manometer, but the inconvenient staff of protective housing observes the reading at any time, the installation volume of bellows pressure meter has been increased simultaneously, must not compensate.

Therefore, in order to solve the problems, the anti-freezing and shock-absorbing bellows pressure gauge is designed, which has profound significance for the development of pressure gauges in China and has certain commercial prospect.

Chinese patent application No. CN201921216648.7 discloses a magnetic vibration-resistant pressure gauge, which increases the application range by making up the limited use of the original silicone oil medium vibration-resistant pressure gauge, and does not further improve the frost resistance and vibration resistance of the bellows pressure gauge.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome not enough above, the utility model aims at providing a freeze proof absorbing bellows pressure meter, structural design is reasonable, has good freeze proof effect, has improved the measurement accuracy under cold weather, can tolerate the pulsation of medium, impact and the sudden off-load in the environment severe vibration place, and the shock attenuation is effectual, durable, and application prospect is extensive.

The technical scheme is as follows: a freeze-proof and shock-absorbing corrugated pipe pressure gauge comprises a pressure gauge body and a shock absorption base, wherein the pressure gauge body is arranged on the shock absorption base; the pressure gauge body comprises a shell, a movement, a corrugated pipe, a connecting rod, a pointer, a dial plate and a pipeline; a movement is arranged in the center of the inner part of the shell, the corrugated pipe is arranged in the shell and surrounds the movement, one end of the corrugated pipe is communicated with a pipeline, the other end of the corrugated pipe is rotationally connected with one end of a connecting rod through a rotational connecting piece, the other end of the connecting rod is rotationally connected with a transmission mechanism, the transmission mechanism is connected with the movement, a dial plate is arranged in front of the movement, a pointer end which is arranged in front of the dial plate and is positioned at the center is connected with the movement, and the pipeline is arranged at the bottom of the shell; a flange is arranged outside the damping base, a loop bar is arranged above the damping base, a nut is arranged outside the loop bar, a joint is arranged above the nut, and a pressure gauge body is arranged above the joint; the pipeline runs through from last to down in proper order casing bottom, joint, loop bar, vibration damping mount.

Freeze proof absorbing bellows manometer, through install the loop bar between on manometer body and vibration damping mount to carry out fixed connection with whole through the flange, improved shock resistance, stability is good. The pressure gauge body transmits elastic deformation of the bellows to the connecting rod, the connecting rod transmits the elastic deformation to the movement, and the pressure deformation is transmitted to the pointer through the conversion mechanism of the movement, so that the pointer rotates to display pressure.

Further, in the antifreeze and shock absorption corrugated pipe pressure gauge, the corrugated pipe is a hollow metal pipe which is bent into an arc of two hundred and seventy degrees and has an oval cross section, and the filling liquid is arranged in the corrugated pipe.

Furthermore, the end of the corrugated pipe, facing the connecting rod, of the anti-freezing and damping corrugated pipe pressure gauge is provided with a sealing plug.

The sealing plug plays a role in fixing the corrugated pipe and sealing the pipe orifice of the corrugated pipe.

Further, the above-mentioned freeze-proof and shock-absorbing bellows pressure gauge, the said body includes the outer cover, inner cover, front end cap, rear end cap; an inner shell is arranged in the outer shell, a front end cover is arranged on the front vertical surface of the outer shell, inner glass is embedded in the front vertical surface of the front end cover, and a sealing ring is adhered to the edge of the top surface of the inner glass; a glass panel is embedded in the top surface of the sealing ring, which is positioned in the front end cover, and the glass panel, the sealing ring, the inner glass and the front end cover are fixedly connected with the shell through mounting bolts; the back vertical surface of the shell is fixedly connected with a rear end cover, and the movement, the corrugated pipe, the connecting rod, the pointer, the dial plate and the pipeline are arranged inside the shell.

The structural design of casing, sealed effectual has solved the poor problem of traditional bellows manometer sealed effect.

Furthermore, according to the anti-freezing and damping corrugated pipe pressure gauge, the first heat insulation layer is filled between the outer shell and the inner shell, and the second heat insulation layer is filled inside the rear end cover.

Furthermore, the anti-freezing and damping corrugated pipe pressure gauge is characterized in that the pipeline consists of an outer pipe, a third heat insulation layer and an inner pipe from outside to inside.

It has first heat preservation to fill between inner shell and the shell, it gets into the inner shell inside to prevent that outside cold air from the shell through the heat exchange, be hollow structure between glass panels and the interior glass, it presss from both sides thermal-insulated sealing washer to press from both sides between glass panels and the interior glass simultaneously, it gets into the inner shell inside to prevent effectively that outside cold air from glass panels through the heat exchange from, the inside packing of rear end cap has the second heat preservation simultaneously, it gets into the inner shell inside to prevent outside cold air from rear end cap department through the heat exchange, it has the third heat preservation to fill between outer tube and the inner tube simultaneously, it gets into the inner shell inside to avoid cold air from the pipeline through the heat exchange, liquid heat preservation for the inner tube is inside simultaneously, prevent that liquid from freezing influences normal measurement.

Furthermore, in the antifreeze and shock absorption corrugated pipe pressure gauge, the first heat insulation layer, the second heat insulation layer and the third heat insulation layer are all made of rock wool; the thicknesses of the first heat preservation layer, the second heat preservation layer and the third heat preservation layer are 1-3 mm.

The rock wool has the characteristics of light weight, small heat conductivity coefficient, heat absorption and non-combustibility, and has a good heat preservation effect.

Furthermore, in the anti-freezing and damping bellows pressure gauge, the inner glass and the glass panel are made of heat-insulating glass; the diameters of the inner glass and the glass panel are the same and are larger than the diameter of the dial.

Interior glass, glass panels material are insulating glass, and thermal-insulated effect is better, and interior glass and glass panels diameter all are greater than the dial plate diameter, do not influence the user and normally read dial plate information.

Furthermore, in the antifreeze and shock-absorbing corrugated pipe pressure gauge, a sealing washer is arranged at the joint of the shock absorption base and the loop bar, a diaphragm is arranged in the shock absorption base, and the upper end of the diaphragm is an arc-shaped surface; an empty groove is formed below the diaphragm, PVC coating is arranged on the outer surface of the empty groove, and a rubber ring is arranged at the upper end of the joint.

When the pressure measuring device is used, the corrugated pipe is vacuumized and filled with filling liquid, the filling liquid of the corrugated pipe is communicated with the damping base through a pipeline, the diaphragm in the damping base seals and isolates the corrugated pipe, when the diaphragm is used for measuring pressure, a measured working medium directly acts on the diaphragm, the upper end of the diaphragm is an arc-shaped surface, the liquid storage capacity is greatly increased, the elastic recovery performance is good, the diaphragm generates upward deformation, the medium pressure is transmitted to the corrugated pipe through the filling liquid in the corrugated pipe, the measuring accuracy is improved, the corrugated pipe generates deformation, the corrugated pipe generates displacement towards one end of the connecting rod, the connecting rod is transmitted to the movement, the pressure deformation is transmitted to the pointer through the conversion mechanism of the movement, the pointer indicates the measured pressure value on the dial plate, when the measured working medium passes through the empty slot, the PVC coating arranged on the outer surface of the empty slot has extremely strong oxidation resistance and corrosion resistance, the damping base is connected with the sleeve rod in a sealing mode through the sealing washer, and the sealing effect of the bellows pressure gauge is improved.

The utility model has the advantages that:

(1) the utility model discloses a freeze proof absorbing bellows pressure gauge, through install the loop bar between manometer body and vibration damping mount to fix the connection through the flange with the whole, improved the shock resistance, stability is good;

(2) the utility model discloses a freeze proof absorbing bellows pressure gauge, the structural design of casing, sealed effectual, through seal ring sealing connection between vibration damping mount and the loop bar, improved the sealed effect of bellows pressure gauge, solved the poor problem of traditional bellows pressure gauge sealed effect, durable;

(3) frost damped bellows pressure gauge, it has first heat preservation to fill between inner shell and the shell, the inside packing of rear end cap has the second heat preservation, it has the third heat preservation to fill between outer tube and the inner tube, prevents that liquid from freezing to influence normal measurement, has good frost-resistant effect, has improved the measurement accuracy of this device under cold weather.

Drawings

FIG. 1 is a schematic view of the whole structure of the antifreeze and shock absorbing bellows pressure gauge of the present invention;

FIG. 2 is a schematic view of a cross-sectional view of a portion of a gauge body of a freeze resistant and damped bellows pressure gauge in accordance with the present invention;

in the figure: the pressure gauge comprises a pressure gauge body 1, a shell 11, an outer shell 111, an inner shell 112, a front end cover 113, inner glass 1131, a sealing ring 1132, a glass panel 1133, a mounting bolt 1134, a rear end cover 114, a first heat insulation layer 115, a second heat insulation layer 116, a movement 12, a corrugated pipe 13, a connecting rod 14, a rotating connecting piece 141, a transmission mechanism 142, a pointer 15, a dial 16, a pipeline 17, an outer pipe 171, an inner pipe 172, a third heat insulation layer 173, a sealing plug 18, a damping base 2, a flange 21, a loop bar 22, a nut 23, a joint 24, a sealing washer 25, a diaphragm 26, an empty groove 27 and a rubber ring 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1-2 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The anti-freezing and shock-absorbing bellows pressure gauge with the structure as shown in fig. 1 comprises a pressure gauge body 1 and a shock absorption base 2, wherein the pressure gauge body 1 is arranged on the shock absorption base 2; the pressure gauge body 1 comprises a shell 11, a movement 12, a corrugated pipe 13, a connecting rod 14, a pointer 15, a dial 16 and a pipeline 17; a movement 12 is arranged in the center of the inside of the shell 11, the bellows 13 is arranged in the shell 11 and around the movement 12, one end of the bellows 13 is communicated with a pipeline 17 and the other end is rotationally connected with one end of a connecting rod 14 through a rotational connecting piece 141, the other end of the connecting rod 14 is rotationally connected with a transmission mechanism 142, the transmission mechanism 142 is connected with the movement 12, a dial 16 is arranged in front of the movement 12, the pointer 15 is arranged in front of the dial 16 and the end of the pointer 15 in the center is connected with the movement 12, and the pipeline 17 is arranged at the bottom of the shell 11; a flange 21 is arranged outside the damping base 2, a loop bar 22 is arranged above the damping base 2, a nut 23 is arranged outside the loop bar 22, a connector 24 is arranged above the nut 23, and a pressure gauge body 1 is arranged above the connector 24; the pipeline 17 penetrates through the bottom of the shell 11, the joint 24, the loop bar 22 and the damping base 2 from top to bottom in sequence.

Further, the corrugated pipe 13 is a hollow metal pipe with an oval cross section and bent into an arc of two hundred and seventy degrees, and the filling liquid is arranged inside the corrugated pipe 13. A sealing plug 18 is provided at the end of the bellows 13 facing the connecting rod 14.

Further, as shown in fig. 2, the housing 11 includes an outer shell 111, an inner shell 112, a front end cover 113, and a rear end cover 114; an inner shell 112 is arranged inside the outer shell 111, a front end cover 113 is arranged on the front vertical surface of the outer shell 111, inner glass 1131 is embedded into the front vertical surface of the front end cover 113, and a sealing ring 1132 is adhered to the edge of the top surface of the inner glass 1131; a glass panel 1133 is embedded in the top surface of the sealing ring 1132 inside the front end cover 113, and the glass panel 1133, the sealing ring 1132, the inner glass 1131 and the front end cover 113 are fixedly connected with the outer shell 111 through mounting bolts 1134; the back vertical surface of the shell 111 is fixedly connected with a rear end cover 114, and the movement 12, the corrugated pipe 13, the connecting rod 14, the pointer 15, the dial 16 and the pipeline 17 are arranged inside the shell 111.

Further, a first insulating layer 115 is filled between the outer shell 111 and the inner shell 112, and a second insulating layer 116 is filled inside the rear end cap 114.

Further, the pipe 17 is composed of an outer pipe 171, a third insulating layer 173 and an inner pipe 172 from outside to inside.

Further, the first heat insulation layer 115, the second heat insulation layer 116 and the third heat insulation layer 173 are made of rock wool; the thicknesses of the first heat-insulating layer 115, the second heat-insulating layer 116 and the third heat-insulating layer 173 are 1-3 mm.

Further, the inner glass 1131 and the glass panel 1133 are made of heat-insulating glass; the diameters of the inner glass 1131 and the glass panel 1133 are the same and larger than the diameter of the dial 16.

Further, a sealing washer 25 is arranged at the joint of the damping base 2 and the loop bar 22, a diaphragm 26 is arranged in the damping base 2, and the upper end of the diaphragm 26 is an arc-shaped surface; an empty groove 27 is formed below the diaphragm 26, PVC paint is arranged on the outer surface of the empty groove 27, and a rubber ring 28 is arranged at the upper end of the joint 24.

Examples

Based on the above structural basis, as shown in fig. 1 and 2.

The utility model discloses a freeze proof absorbing bellows pressure gauge, structural design is reasonable, through install loop bar 22 between manometer body 1 and vibration damping mount 2 to fix the connection through flange 21 with whole, improved shock resistance, stability is good; the damping base 2 is connected with the loop bar 22 in a sealing mode through a sealing washer 25, and a rubber ring 28 is arranged at the upper end of the joint 24, so that the sealing effect of the bellows pressure gauge is improved.

Furthermore, the structural design of the housing 11 is good in sealing effect, a first heat-insulating layer 115 is filled between the inner casing 112 and the outer casing 111, so as to prevent external cold air from entering the inner casing 112 through heat exchange from the outer casing 111, a hollow structure is formed between the glass panel 1133 and the inner glass 1131, a heat-insulating sealing ring 1132 is sandwiched between the glass panel 1133 and the inner glass 1131, so as to effectively prevent the external cold air from entering the inner casing 112 through heat exchange from the glass panel 1133, meanwhile, a second heat-insulating layer 116 is filled inside the rear end cover 114, so as to prevent the external cold air from entering the inner casing 112 through heat exchange from the rear end cover 114, a third heat-insulating layer 173 is filled between the outer pipe 171 and the inner pipe 172, so as to prevent the cold air from entering the inner casing 112 through heat exchange from the pipeline 17, and at the same time, so as to preserve heat of, the measuring precision of the device under cold weather is improved.

Further, the first heat insulation layer 115, the second heat insulation layer 116 and the third heat insulation layer 173 are made of rock wool; the thicknesses of the first heat-insulating layer 115, the second heat-insulating layer 116 and the third heat-insulating layer 173 are 1-3 mm. The inner glass 1131 and the glass panel 1133 are made of heat-insulating glass; the diameters of the inner glass 1131 and the glass panel 1133 are the same and larger than the diameter of the dial 16. The rock wool has the characteristics of light weight, small heat conductivity coefficient, heat absorption and non-combustibility, and has a good heat preservation effect. Interior glass 1131, glass panels 1133 material are thermal-insulated glass, and thermal-insulated effect is better, and interior glass 1131 and glass panels 1133 diameter all are greater than the dial 16 diameter, do not influence the user and normally read dial 16 information.

Furthermore, when in use, the bellows 13 is vacuumized and filled with filling liquid, the filling liquid of the bellows 13 is communicated with the damping base 2 through the pipeline 17 and is sealed and isolated by the diaphragm 26 in the damping base 2, when the diaphragm 26 is used for measuring pressure, the measured working medium directly acts on the diaphragm 26, the upper end of the diaphragm 26 is an arc-shaped surface, the liquid storage capacity is greatly increased, the elastic recovery performance is good, the diaphragm 26 generates upward deformation, the medium pressure is transmitted to the bellows 13 through the filling liquid in the bellows 13, the measurement accuracy is improved, the bellows 13 generates deformation, the bellows 13 generates displacement towards one end of the connecting rod 14, the connecting rod 14 is transmitted to the movement 12, the pressure deformation is transmitted to the pointer 15 through the conversion mechanism of the movement 12, the pointer 15 indicates the measured pressure value on the dial 16, and when the measured working medium passes through the empty groove 27, the PVC coating arranged on the outer surface of the empty groove 27 has extremely strong oxidation resistance and corrosion resistance.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.

Claims (9)

1. The antifreeze and shock-absorbing corrugated pipe pressure gauge is characterized by comprising a pressure gauge body (1) and a shock absorption base (2), wherein the pressure gauge body (1) is installed on the shock absorption base (2); the pressure gauge body (1) comprises a shell (11), a movement (12), a corrugated pipe (13), a connecting rod (14), a pointer (15), a dial (16) and a pipeline (17); a movement (12) is arranged at the central position in the shell (11), the corrugated pipe (13) is arranged in the shell (11) and is arranged around the movement (12), one end of the corrugated pipe (13) is communicated with a pipeline (17) and the other end of the corrugated pipe is rotationally connected with one end of a connecting rod (14) through a rotational connecting piece (141), the other end of the connecting rod (14) is rotationally connected with a transmission mechanism (142), the transmission mechanism (142) is connected with the movement (12), a dial (16) is arranged in front of the movement (12), the pointer (15) is arranged in front of the dial (16) and the end of the pointer (15) located at the center is connected with the movement (12), and the pipeline (17) is arranged at the bottom of the shell (11); a flange (21) is arranged outside the damping base (2), a loop bar (22) is arranged above the damping base (2), a nut (23) is arranged outside the loop bar (22), a joint (24) is arranged above the nut (23), and a pressure gauge body (1) is arranged above the joint (24); pipeline (17) from last to running through down in proper order casing (11) bottom, joint (24), loop bar (22), vibration damping mount (2).

2. The freeze resistant damped bellows pressure gauge as claimed in claim 1, characterized in that said bellows (13) is a hollow metal tube of oval cross-section bent in a two hundred seventy degrees arc, said bellows (13) being internally provided with a filling liquid.

3. Frost damped bellows pressure gauge according to claim 1, characterized in that the end of the bellows (13) facing the connecting rod (14) is provided with a closing plug (18).

4. The freeze resistant damped bellows pressure gauge as claimed in claim 1, characterized in that said housing (11) comprises an outer shell (111), an inner shell (112), a front end cap (113), a rear end cap (114); an inner shell (112) is arranged in the outer shell (111), a front end cover (113) is arranged on the front vertical surface of the outer shell (111), inner glass (1131) is embedded in the front vertical surface of the front end cover (113), and a sealing ring (1132) is adhered to the edge of the top surface of the inner glass (1131); the top surface of the sealing ring (1132) is positioned in the front end cover (113) and is embedded with a glass panel (1133), and the glass panel (1133), the sealing ring (1132), the inner glass (1131) and the front end cover (113) are fixedly connected with the shell (111) through mounting bolts (1134); the back vertical surface of the outer shell (111) is fixedly connected with a rear end cover (114), and the movement (12), the corrugated pipe (13), the connecting rod (14), the pointer (15), the dial (16) and the pipeline (17) are arranged inside the inner shell (112).

5. The freeze resistant damped bellows pressure gauge according to claim 4, characterized in that between said outer shell (111) and inner shell (112) is filled a first insulation layer (115), and inside said rear end cap (114) is filled a second insulation layer (116).

6. The freeze resistant damped bellows pressure gauge according to claim 5, characterized in that said duct (17) consists, from outside to inside, of an outer tube (171), a third insulating layer (173), an inner tube (172).

7. The freeze resistant, cushioned bellows pressure gauge of claim 6, wherein said first insulation layer (115), said second insulation layer (116), and said third insulation layer (173) are rock wool; the thicknesses of the first heat-insulating layer (115), the second heat-insulating layer (116) and the third heat-insulating layer (173) are 1-3 mm.

8. The freeze resistant, cushioned bellows pressure gauge of claim 4, wherein said inner glass (1131) and glass panels (1133) are both insulating glass; the diameters of the inner glass (1131) and the glass panel (1133) are the same and larger than the diameter of the dial (16).

9. The freeze resistant damped bellows pressure gauge according to claim 1, characterized in that, there is a sealing washer (25) in the connection of the damping base (2) and the loop bar (22), there is a diaphragm (26) in the damping base (2), the upper end of the diaphragm (26) is an arc surface; an empty groove (27) is formed below the diaphragm (26), PVC coating is arranged on the outer surface of the empty groove (27), and a rubber ring (28) is arranged at the upper end of the joint (24).

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