CN214224415U - High-precision high-reliability natural gas pressure gauge - Google Patents

Abstract

The utility model discloses a high-accuracy high-reliability natural gas pressure gauge, including watchcase and connector, the watchcase in install the diaphragm chamber, the diaphragm chamber is connected to the connector, the diaphragm chamber include bottom plate and diaphragm, bottom plate and diaphragm constitute the cavity, atmospheric pressure in the cavity changes and drives diaphragm deformation, diaphragm deformation drive pointer is rotatory. The structure reliability is high, and the detection precision is high.

Description

High-precision high-reliability natural gas pressure gauge

Technical Field

The utility model belongs to the technical field of the manometer and specifically relates to a high-accuracy high-reliability natural gas manometer is related to.

Background

Pressure gauges (pressure gauge) are instruments that measure and indicate pressures above ambient pressure, which are very common, using elastic elements as sensors, and are used in almost all fields of industrial processes and scientific research. The method is widely available in the fields of heating power pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance plants and shops and the like. Especially in the industrial process control and technical measurement process, 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.

The Chinese utility model, the miniature bellows type low pressure watch, application (patent) No.: CN201520519760.3 discloses a watch glass, a pressure sensor capsule and a movement assembly, wherein the movement assembly comprises an upper clamp plate, a lower clamp plate, a balance spring, a central gear, a central shaft, a sector gear, a strip-shaped swing rod shaft, etc. The utility model discloses an adopt the pressure sensor diaphragm capsule that the volume is littleer as the pressure sensor of core on ordinary manometer's basis, compare with other sensors of making with volume metal material, under the condition that equal pressure differential changes, the pressure sensor diaphragm capsule can obtain displacement variation volume great relatively.

However, the pressure gauge adopting the capsule has short service life and low detection precision, and has no anti-falling and anti-seismic effect, so that the pressure gauge is easy to damage in the long-distance transportation process, and therefore, a high-precision and high-reliability natural gas pressure gauge is needed to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high-accuracy high-reliability natural gas pressure gauge is provided, the structural reliability is high, and it is high to detect the precision.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: high-accuracy high-reliability natural gas pressure gauge, including watchcase and connector, the watchcase in install the diaphragm chamber, the diaphragm chamber is connected to the connector, the diaphragm chamber include bottom plate and diaphragm, bottom plate and diaphragm constitute the cavity, atmospheric pressure change in the cavity drives the diaphragm deformation, the diaphragm deformation drives the pointer rotation.

Compared with the prior art, the utility model has the advantages of the connector of manometer with wait to detect gas connection, wait to detect in gaseous leading-in diaphragm capsule of connector. The utility model provides a diaphragm capsule is the cavity that comprises bottom plate and diaphragm, treats that gaseous leading-in cavity of gas will drive the diaphragm and take place deformation. In the utility model, the bottom plate of the diaphragm capsule is not deformed due to the change of the air pressure in the cavity. Only the single corrugated diaphragm on the bottom plate deforms, so that the displacement generated after the diaphragm box deforms under pressure is half of the original displacement, the system error is reduced, and the detection precision is improved. The bottom plate is connected with the membrane, so that the stability of the product is improved.

The utility model discloses further preferred scheme: the front side of bottom plate be provided with the mounting panel, the mounting panel both ends are fixed with the bottom plate, the mounting panel be on a parallel with the bottom plate setting, drive assembly sets up at the mounting panel, drive assembly has connected diaphragm and pointer.

The utility model discloses be connected mounting panel and bottom plate, guaranteed that mounting panel and bottom plate structurally are a stable whole, then install the drive assembly setting on the mounting panel to improve drive assembly's installation reliability, also improved drive assembly's transmission sensitivity, improved the utility model discloses a detection precision.

Further, the utility model discloses a bottom plate design is for not taking place the plate body structure of deformation, and consequently the structural stability of bottom plate is high.

Further, the membrane is a sheet member with a corrugated structure. The diaphragm can sensitively sense the air pressure change in the diaphragm box, and the air pressure drives the diaphragm to bulge outwards.

Specifically, the diaphragm is of a circular sheet structure, the corrugations of the diaphragm are circular, the periphery of the diaphragm is connected with the bottom plate, the free degree of the middle part of the diaphragm relative to the periphery of the diaphragm is higher, and therefore when the diaphragm box is stressed, the middle part of the diaphragm firstly bulges. The transmission assembly is connected with the middle part of the diaphragm in a contact mode, and the driving of the diaphragm drives the transmission assembly to work to drive the pointer to rotate to indicate the pressure value.

Furthermore, the pointer is arranged on the rotating shaft, and a gear is sleeved on the outer peripheral surface of the rotating shaft.

Further, the transmission assembly comprises a sector gear and a swing rod shaft. The swing rod shaft is movably arranged on the mounting plate and is parallel to the diaphragm capsule.

Further, the swing rod shaft is connected with a contact head and a connecting rod. The contact head is arranged along the radial direction of the swing rod shaft, the contact head is positioned on the side edge of the swing rod shaft, the contact head is spherical, and the contact head is in contact connection with the diaphragm. The bellows is shaken to drive the contact head to move and rotate around the swing rod shaft, namely the swing rod shaft rotates.

Furthermore, the connecting rod is arranged along the radial direction of the swing rod shaft, the contact head is positioned on the side edge of the swing rod shaft, and the connecting rod is in contact connection with the sector gear. The rotation of the swing rod shaft drives the connecting rod to rotate, and the rotating connecting rod drives the sector gear to move.

Furthermore, the sector gear is movably arranged on the mounting plate and meshed with the rotating shaft. The sector gear moves to drive the rotating shaft to rotate, and the pointer on the rotating shaft indicates the pressure value.

Furthermore, the connector is provided with a channel, a damping piece is installed in the channel, and the gas to be detected passes through a gap between the peripheral surface of the damping piece and the inner wall surface of the channel.

The gas to be detected is led into the pressure gauge through the channel, and the center of the channel is blocked by the damping piece arranged in the channel. So that the gas to be detected cannot pass directly through the centre of the channel. The damping piece can reduce the impact force when the air current enters the channel, so that the pressure gauge can stably increase the pressure and stably decrease the pressure, thereby better protecting the pressure gauge element, improving the stability and prolonging the service life of the pressure gauge.

Furthermore, one section of the channel is provided with internal threads which are thread sections, external threads are arranged on the periphery of the damping piece, and the damping piece is installed on the thread sections.

The utility model discloses a be threaded connection between damping piece and the screw thread section. When installed, the damping member is rotatably mounted to the threaded section. Wherein the damping piece is cylindric structure, the external screw thread of damping piece and the internal thread of screw thread section between have the clearance, can supply to detect gas and pass through. Specifically, the utility model discloses a screw thread section is located the lower part port department of connector.

Further, the tip of connector be the union coupling head, the end connection leather hose of connector, the connector is provided with the clamp that is used for restricting the two axial degree of freedom.

Specifically, the connector surface be provided with the check circle, leather hose one end parcel outside the check circle, the clamp install outside the leather hose and be located the top of check circle.

The utility model discloses a pipe connector has been adopted in the connection of manometer, can with leather hose high-speed joint and roll over and unload.

The clamp adopts the adjustable design of stainless steel, can tightly block the leather hose on the connector, guarantees the sealing performance of sealed leather hose and connector.

Furthermore, the leather hose one end be connected with the connector, the other end of leather hose be provided with the quick-operation nipple.

Specifically, the quick connector is a rubber plug with a conical structure, so that quick connection is realized.

Further, still set crossover sub, crossover sub include leather hose link and equipment link, the leather hose link be provided with a plurality of check rings.

Specifically, the leather hose connecting end is connected with the quick-connection nozzle, the leather hose connecting end extends into the quick-connection nozzle, and the non-return ring is embedded into the quick-connection nozzle.

Specifically, the cross section of the check ring is of a triangular structure.

Furthermore, the equipment connecting end is provided with an external thread, and the adapter is in threaded connection with the equipment to be detected.

A hexagonal ring piece is arranged between the leather hose connecting end and the equipment connecting end, and when a user installs the device, the user can act on the hexagonal ring piece through tools such as a wrench and the like to drive the adapter to be connected and fixed with the equipment to be detected.

Further, still set and settle the box, settle the box in be provided with the mounting groove, the watchcase is installed in the mounting groove.

The integral structure of the pressure gauge is arranged, and the pressure gauge cannot be vertically placed on the table board. And the horizontal placement is inconvenient for reading by users, and the horizontal placement is also easy to be torn by the leather hose to slide off, which is inconvenient for detection and reading by users. Therefore, the arrangement box is arranged, the pressure gauge is arranged in the arrangement box, and the arrangement box can be vertically or horizontally arranged on the table top, so that the detection and reading of a user are facilitated.

Furthermore, the arrangement box is provided with a cover, a lock catch is arranged on the cover, and the cover can be pressed and fixed on the arrangement box through the lock catch.

One side of lid be connected with the arrangement box, and can adjust the contained angle between lid and the arrangement box for the arrangement box can be fine upright placing on the mesa, and the manometer in the arrangement box can be observed the pointer reading by audio-visual.

Further, settle the box in still be provided with leather hose, crossover sub's recess for leather hose, crossover sub can place in the recess, leave in the settle the box, under non-user state, the lid is pressed admittedly in the settle the box, it is right the utility model discloses play and deposit and guard action. And the groove plays a certain clamping role on the leather hose and the adapter, and the leather hose and the adapter are not easy to fall off from the groove under the condition of not receiving external force.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the utility model in use;

fig. 3 is a schematic view of the structure inside the watch case of the present invention;

fig. 4 is a sectional view of the utility model at the joint;

fig. 5 is a schematic structural view of the adapter of the present invention.

Wherein the reference numerals are specified as follows: 1. a watch case; 2. a connector; 3. a bellows; 3a, a bottom plate; 3b, a membrane; 4. a pointer; 5. mounting a plate; 6. a rotating shaft; 7. a sector gear; 8. a swing rod shaft; 9. a contact head; 10. a connecting rod; 11. a channel; 11a, a threaded section; 12. a damping member; 13. a leather hose; 14. a quick connection nozzle; 15. a non-return ring; 16. a crossover sub; 17. a cover; 18. placing a box; 19. mounting grooves; 20. and (4) a groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 3: high-accuracy high-reliability natural gas pressure gauge comprises a meter shell 1 and a connector 2, the meter shell 1 is internally provided with a diaphragm capsule 3, the connector 2 is connected with the diaphragm capsule 3, and gas to be detected is led into the diaphragm capsule 3 through the connector 2. The diaphragm box 3 comprises a bottom plate 3a and a diaphragm 3b, the bottom plate 3a and the diaphragm 3b form a cavity, the diaphragm 3b is driven to deform by the change of air pressure in the cavity, and the pointer 4 is driven to rotate by the deformation of the diaphragm 3 b. In the utility model, the bottom plate 3a of the bellows 3 is not deformed due to the change of the air pressure in the cavity. Only the single corrugated diaphragm 3b on the bottom plate 3a deforms, so that the displacement generated after the diaphragm capsule 3 is deformed by pressure is half of the original displacement, the system error is reduced, and the detection precision is improved. The stability of the product is also improved by the connection of the bottom plate 3a with the membrane 3 b.

The utility model discloses further preferred scheme: the leading flank of bottom plate 3a be provided with mounting panel 5, 5 both ends of mounting panel are fixed with bottom plate 3a, mounting panel 5 be on a parallel with bottom plate 3a setting, drive assembly sets up at mounting panel 5, drive assembly has connected diaphragm 3b and pointer 4.

The utility model discloses be connected mounting panel 5 and bottom plate 3a, guaranteed that mounting panel 5 and bottom plate 3a structurally are a stable whole, then install the drive assembly setting on mounting panel 5 to drive assembly's installation reliability has been improved. The utility model discloses a bottom plate 3a designs for the plate body structure that does not take place deformation, and consequently bottom plate 3 a's structural stability is high.

The membrane 3b is a sheet-shaped member with a corrugated structure. The diaphragm 3b is sensitive to the change of air pressure in the bellows 3, and the air pressure will drive the diaphragm 3b to bulge out. Specifically, the membrane 3b is a circular sheet-like structure, the corrugations of the membrane 3b are circular, the outer periphery of the membrane 3b is connected with the bottom plate 3a, and the middle part of the membrane 3b has a higher degree of freedom relative to the peripheral part, so that the middle part of the membrane 3b will bulge first when the membrane box 3 is stressed. The transmission assembly is connected with the middle part of the diaphragm 3b in a contact mode, and the driving of the diaphragm 3b drives the transmission assembly to work to drive the pointer 4 to rotate to indicate the pressure value.

The pointer 4 is arranged on the rotating shaft 6, and a gear is sleeved on the peripheral surface of the rotating shaft 6.

The transmission assembly comprises a sector gear 7 and a swing rod shaft 8. The swing rod shaft 8 is movably arranged on the mounting plate 5, and the swing rod shaft 8 is parallel to the bellows 3.

The swing rod shaft 8 is connected with a contact head 9 and a connecting rod 10. The contact heads 9 are arranged along the radial direction of the swing rod shaft 8, the contact heads 9 are positioned on the side edges of the swing rod shaft 8, the contact heads 9 are spherical, and the contact heads 9 are in contact connection with the diaphragms 3 b. The bellows 3 is blown to drive the contact head 9 to move and rotate around the swing rod shaft 8, namely the swing rod shaft 8 rotates.

The connecting rod 10 is arranged along the radial direction of the swing rod shaft 8, the contact head 9 is positioned on the side edge of the swing rod shaft 8, and the connecting rod 10 is in contact connection with the sector gear 7. The rotation of the rocker shaft 8 will drive the connecting rod 10 to rotate, and the rotating connecting rod 10 will drive the sector gear 7 to move.

The sector gear 7 is movably arranged on the mounting plate 5, and the sector gear 7 is meshed with the rotating shaft 6. The sector gear 7 moves to drive the rotating shaft 6 to rotate, and the pointer 4 on the rotating shaft 6 indicates the pressure value.

As shown in fig. 4: the connector 2 is provided with a channel 11, a damping piece 12 is installed in the channel 11, and gas to be detected passes through a gap between the outer peripheral surface of the damping piece 12 and the inner wall surface of the channel 11. The gas to be detected is introduced into the pressure gauge through a passage 11, and a damper 12 is provided in the passage 11 to block the center of the passage 11. So that the gas to be detected cannot pass directly through the centre of the channel 11. The damping member 12 can reduce the impact force when the air flow enters the channel 11, so that the pressure gauge can stably increase the pressure on the ground and stably decrease the pressure, thereby better protecting the pressure gauge elements, improving the stability and prolonging the service life of the pressure gauge.

One section of passageway 11 be provided with the internal thread for screw thread section 11a, damping piece 12 periphery be provided with the external screw thread, damping piece 12 is installed in screw thread section 11 a. The utility model discloses a be threaded connection between damping part 12 and the screw thread section 11 a. When installed, the damping member 12 is rotatably mounted to the threaded section 11 a. Wherein damping part 12 is cylindric structure, damping part 12 the external screw thread and threaded section 11a between have the clearance, can supply to wait to detect the gas and pass through. Specifically, the utility model discloses a screw thread section 11a is located the lower part port department of connector 2.

As shown in fig. 2 and 4, the end of the connector 2 is a pipe connector 2, the end of the connector 2 is connected with a leather hose 13, and the connector 2 is provided with a clamp for limiting the axial freedom of the two. Specifically, 2 surfaces of connector be provided with non return ring 15, hose 13 one end parcel outside non return ring 15, the clamp install outside hose 13 and be located non return ring 15's top.

The utility model discloses a pipe connector 2 has been adopted in the connection of manometer, can with 13 high-speed joint of leather hose and roll over and unload. The clamp adopts the adjustable design of stainless steel, can tightly block leather hose 13 on connector 2, guarantees the sealing performance of sealed leather hose 13 and connector 2.

One end of the leather hose 13 is connected with the connector 2, and the other end of the leather hose 13 is provided with a quick connector 14. Specifically, the quick connection nozzle 14 is a rubber plug with a conical structure, so that quick connection is realized.

As shown in fig. 2 and 5, a conversion joint 16 is also provided, wherein the conversion joint 16 comprises a leather hose connecting end and an equipment connecting end, and the leather hose connecting end is provided with a plurality of check rings 15. Specifically, the leather hose connecting end is connected with the quick connection nozzle 14, the leather hose connecting end extends into the quick connection nozzle 14, and the check ring 15 is embedded into the quick connection nozzle 14. The cross section of the check ring 15 is a triangular structure.

The equipment connecting end is provided with an external thread, and the adapter 16 is in threaded connection with the equipment to be detected. A hexagonal ring piece is arranged between the leather hose connecting end and the equipment connecting end, and when a user installs the device, the user can act on the hexagonal ring piece through tools such as a wrench and the like so as to drive the adapter 16 to be connected and fixed with the equipment to be detected.

As shown in fig. 1: and a mounting box 18 is also arranged, a mounting groove 19 is arranged in the mounting box 18, and the watch case 1 is mounted in the mounting groove 19. The integral structure of the pressure gauge is arranged, and the pressure gauge cannot be vertically placed on the table board. And the horizontal placement is inconvenient for reading by users, and the leather hose 13 is easy to tear and slide off when the leather hose is horizontally placed, so that the detection and reading by users are inconvenient. Therefore, the setting box 18 is provided, the pressure gauge is placed in the setting box 18, and the setting box 18 can be vertically or horizontally placed on a table top, so that the detection and reading of a user are convenient.

The placing box 18 is provided with a cover 17, a lock catch is arranged on the cover 17, and the cover 17 can be pressed and fixed on the placing box 18 through the lock catch. One side of lid 17 be connected with arrangement box 18, and can adjust the contained angle between lid 17 and the arrangement box 18 for arrangement box 18 can be fine stand upright and place on the mesa, and the manometer in the arrangement box 18 can be observed pointer 4 reading by the audio-visual.

Place still be provided with the recess 20 of leather hose 13, crossover sub 16 in the box 18 for leather hose 13, crossover sub 16 can be placed in recess 20, deposit in settling box 18, under non-user state, lid 17 is pressed admittedly in settling box 18, it is right the utility model discloses play and deposit and guard action. The groove 20 plays a certain clamping role for the leather hose 13 and the adapter 16, and the leather hose 13 and the adapter 16 are not easy to fall off from the groove 20 under the condition of not receiving external force.

The above is to the utility model discloses going on the detailed introduction, having used specific individual example to right in this paper the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment only is used for helping understanding the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. High-accuracy high-reliability natural gas pressure gauge comprises a meter shell (1) and a connector (2), and is characterized in that a diaphragm box (3) is installed in the meter shell (1), the connector (2) is connected with the diaphragm box (3), the diaphragm box (3) comprises a bottom plate (3a) and a diaphragm (3b), the bottom plate (3a) and the diaphragm (3b) form a cavity, the air pressure in the cavity changes to drive the diaphragm (3b) to deform, and the diaphragm (3b) deforms to drive a pointer (4) to rotate.

2. The high-precision high-reliability natural gas pressure gauge according to claim 1, characterized in that a mounting plate (5) is arranged on the front side surface of the bottom plate (3a), two ends of the mounting plate (5) are fixed with the bottom plate (3a), the mounting plate (5) is arranged in parallel with the bottom plate (3a), a transmission assembly is arranged on the mounting plate (5), and the transmission assembly is connected with the diaphragm (3b) and the pointer (4).

3. The high-precision high-reliability natural gas pressure gauge according to claim 1, wherein the connector (2) is provided with a channel (11), a damping member (12) is installed in the channel (11), and gas to be detected passes through a gap between the outer peripheral surface of the damping member (12) and the inner wall surface of the channel (11).

4. The high-precision high-reliability natural gas pressure gauge according to claim 3, wherein an internal thread arranged on one section of the channel (11) is a threaded section (11a), an external thread is arranged on the periphery of the damping member (12), and the damping member (12) is installed on the threaded section (11 a).

5. The high-precision high-reliability natural gas pressure gauge according to claim 1, wherein the end of the connector (2) is a pipe connector (2), the end of the connector (2) is connected with a leather hose (13), and the connector (2) is provided with a clamp for limiting the axial freedom of the two.

6. The high-precision high-reliability natural gas pressure gauge according to claim 5, wherein one end of the rubber tube (13) is connected with the connector (2), and the other end of the rubber tube (13) is provided with a quick connector (14).

7. The high-precision high-reliability natural gas pressure gauge according to claim 1, characterized in that an adapter (16) is further provided, the adapter (16) comprises a leather pipe connecting end and an equipment connecting end, and the leather pipe connecting end is provided with a plurality of check rings (15).

8. The high-precision high-reliability natural gas pressure gauge according to claim 7, wherein the equipment connecting end is provided with an external thread, and the adapter (16) is in threaded connection with equipment to be detected.

9. A high accuracy and high reliability natural gas pressure gauge according to claim 1, wherein a mounting box (18) is provided, a mounting groove (19) is provided in the mounting box (18), and the watch case (1) is mounted in the mounting groove (19).

10. The high-precision high-reliability natural gas pressure gauge according to claim 9, wherein the mounting box (18) is provided with a cover (17), the cover (17) is provided with a lock catch, and the cover (17) can be pressed and fixed on the mounting box (18) through the lock catch.

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