CN217542237U

CN217542237U - Core structure for double-sided display of pressure gauge and pressure gauge

Info

Publication number: CN217542237U
Application number: CN202221510566.5U
Authority: CN
Inventors: 潘志钢; 杨龙; 陈建国; 徐和先; 陈勇; 曾志金
Original assignee: China Petroleum and Chemical Corp; Sinopec Southwest Oil and Gas Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Southwest Oil and Gas Co
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-10-04
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to a pressure instrument measures technical field, concretely relates to a core structure and manometer for two-sided demonstration of manometer, wherein the core structure includes table needle axle and relative first chassis and the second chassis that sets up, be equipped with gear and wind spring on the table needle axle, the both ends of table needle axle pass first chassis and second chassis respectively, first chassis and second chassis are connected through the pillar, the pillar is fixed connection wind spring's free end, be equipped with sector gear between first chassis and the second chassis, sector gear articulates with the first chassis and the second chassis of both sides respectively, sector gear and gear meshing simultaneously; the utility model discloses the pointer that can make the manometer is driven rotatoryly by same gear to at the same angle of manometer positive and negative rotation, the two-sided synchronous display of the manometer of being convenient for and show the precision unanimous, simple structure is compact, and small in size is light, the installation of the special demand environment of being convenient for.

Description

Core structure for double-sided display of pressure gauge and pressure gauge

Technical Field

The utility model relates to a pressure instrument measures technical field, especially a core structure and manometer for two-sided demonstration of manometer.

Background

The pressure gauge is an instrument used for measuring and indicating the pressure higher than the environmental pressure, and is widely applied to the fields of heating power pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance plants and shops and the like. In general, a mechanical pressure gauge transmits pressure deformation to a pointer through a conversion mechanism of a movement in the gauge by elastic deformation of a sensitive element (a spring tube, a corrugated tube, and the like) in the gauge, so that the pointer is caused to rotate to display pressure.

Most of the existing pressure gauges with various specifications and types are single-sided display, and the reading can be observed from one direction only, so that a great deal of inconvenience is brought to an operator, and the operation and reading time is prolonged. Especially in the natural gas exploitation industry, the demand for installing the pressure gauge is large in all stages of flows from a wellhead to an outlet, the operating pressure of the conventional device needs to be visually seen from a large angle as much as possible, and the defects caused by single-side display of the pressure gauge are particularly highlighted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: to the problem of prior art manometer one-way display, inconvenient operating personnel reading, provide a core structure and manometer that is used for the two-sided demonstration of manometer.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a core structure for two-sided demonstration of manometer, including first chassis and the second chassis that table needle shaft and relative setting, be equipped with gear and spring coil on the table needle shaft, first chassis and second chassis are passed in the activity respectively at the both ends of table needle shaft, first chassis and second chassis are connected through the pillar, the free end of pillar fixed connection spring coil, be equipped with sector gear between first chassis and the second chassis, sector gear is articulated mutually with the first chassis and the second chassis of both sides respectively, sector gear and the epaxial gear engagement who sets up of table needle simultaneously.

The end part of the pointer shaft in the core structure is used for installing a pointer, and when the sector gear rotates relative to the hinge shaft under the external action, the gear and the pointer shaft are driven to rotate, so that two ends of the pointer shaft respectively penetrating through the first chassis and the second chassis have synchronous indicating functions; wherein the coil spring serves for balancing and restoring.

The utility model provides a core structure can make the pointer of manometer drive rotatoryly by same gear to at the same angle of manometer positive and negative rotation, the two-sided synchronous display of the manometer of being convenient for and show the precision unanimous, simple structure is compact, small in size is light, the installation of the special demand environment of being convenient for.

Preferably, the connecting positions of the hinging shafts of the strut, the watch pin shaft and the sector gear and the first chassis and the second chassis on the two sides are on the same straight line, so that the arrangement area of the chassis is reduced, and the space is simplified.

Preferably, the pillar includes first pillar and second pillar, and the articulated shaft of first pillar, watch needle axle, second pillar and sector gear sets gradually, and sector gear is equipped with the hole that supplies the activity of second pillar. Two supporting columns are respectively arranged at two sides of the pointer shaft, so that the stability of the movement structure is favorably ensured; meanwhile, the second support is arranged between the watch hand shaft and the articulated shaft of the sector gear, and a large enough Kong Bimian second support is arranged on the sector gear to prevent the sector gear from rotating, so that the tail end of the sector gear can effectively swing and drive, and the structure is more reasonable.

Preferably, at least one arc-shaped hole is formed in the first base plate and/or the second base plate and used for adjusting the installation angle of the movement structure on the pressure gauge shell.

Preferably, the arc-shaped holes are arranged centrosymmetrically with respect to the hand axis.

Preferably, the tail end of the sector gear is provided with an elongated hole for adjusting the display precision of the pointer. Wherein the elongated holes are radially arranged (centered on the hinge position).

Preferably, the support is integrally connected with the first chassis, and the support is in threaded connection with the second chassis; or the support column is detachably connected with the first chassis and the second chassis.

On the other hand, the utility model provides a but manometer of two-sided demonstration, including above-mentioned core structure.

The utility model provides a manometer can realize two-sided demonstration, utilizes it can reduce greatly and survey the dead angle, conveniently observes, the reading, and is particularly suitable for installing on special device or the position that operating personnel is difficult to the reading.

Furthermore, the pressure gauge comprises a pull rod and a spring tube, wherein one end of the pull rod is connected with the spring tube, and the other end of the pull rod is connected with the sector gear.

Furthermore, the manometer includes that two are the dial plate that the mirror image set up, and the table needle shaft both ends of core structure pass one respectively the dial plate is connected the pointer.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model provides a core structure can make the pointer of manometer drive rotatoryly by same gear to at the same angle of manometer positive and negative rotation, the two-sided synchronous display of the manometer of being convenient for and show the precision unanimous, simple structure is compact, small in size is light, the installation of the special demand environment of being convenient for.

2. The utility model provides a manometer can realize two-sided demonstration, utilizes it can reduce greatly and survey the dead angle, conveniently observes, the reading, and is particularly suitable for installing on special device or the position that operating personnel is difficult to the reading.

Drawings

Fig. 1 is a plan view of a movement structure for double-sided display of a pressure gauge.

Fig. 2 is an elevation view of a movement structure for double-sided display of a pressure gauge.

Icon: 1-watch needle shaft; 2-a first chassis; 3-a second chassis; 4-a first strut; 5-a second strut; 6-sector gear; 7-a gear; 8-coil spring; 9-arc-shaped holes; 10-elongated hole.

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.

Example 1

The utility model provides a core structure for two-sided demonstration of manometer, as fig. 1, fig. 2 is shown, including first chassis 2 and the second chassis 3 of table needle axle 1 and relative setting, be equipped with gear 7 and spring coiling 8 on the table needle axle 1, first chassis 2 and second chassis 3 are passed respectively at the both ends of table needle axle 1, first chassis 2 and second chassis 3 are connected through the pillar and carry on spacingly, pillar fixed connection spring coiling 8's free end, be equipped with sector gear 6 between first chassis 2 and the second chassis 3, sector gear 6 is articulated mutually with first chassis 2 and the second chassis 3 of both sides respectively through the articulated shaft, sector gear 6 meshes with gear 7 simultaneously.

The end part of the watch needle shaft 1 in the core structure is used for installing a pointer, and when the sector gear 6 rotates relative to the hinged shaft under the external action, the gear 7 and the watch needle shaft 1 are driven to rotate, so that two ends of the watch needle shaft 1 respectively penetrating through the first chassis 2 and the second chassis 3 have synchronous indicating functions; wherein the coil spring 8 plays the role of balance and reset, the setting position of the coil spring 8 is flush with the fixed point position of the coil spring 8 on the pillar.

Specifically, in the present embodiment, the hinge shafts of the pillar, the pointer shaft 1, and the sector gear 6 are arranged in parallel, so that the connection positions on the first chassis 2 and the second chassis 3 are on the same straight line, which is beneficial to reducing the chassis installation area and simplifying the space. Wherein, the pillar includes first pillar 4 and second pillar 5, and first pillar 4, table needle axle 1, second pillar 5 and sector gear 6's articulated shaft sets gradually, and sector gear 6 is equipped with the hole that supplies second pillar 5 to pass, and when sector gear 6 rotated around the articulated shaft, second pillar 5 can be in the big hole activity of establishing, and second pillar 5 does not take place the structure with sector gear 6 under normal operating condition promptly and interferes. Two support columns are respectively arranged at two sides of the watch hand shaft 1, so that the stability of the movement structure is ensured; meanwhile, the second support 5 is arranged between the watch hand shaft 1 and the articulated shaft of the sector gear 6, and a large enough Kong Bimian second support is arranged on the sector gear 6 to prevent the sector gear 6 from rotating, so that the tail end of the sector gear 6 can effectively swing and drive, and the structure is more reasonable.

In the embodiment, the first support 4 and the second support 5 are integrally connected to the second chassis 3, the first support 4 and the second support 5 are provided with internal threads, holes are drilled in the first chassis 2 at corresponding positions corresponding to the first support 4 and the second support 5, and the diameter of the drilled holes is slightly larger than the external diameter of the internal threads; during the installation, second pillar 5 passes the hole on the sector gear 6, fixes a position the one end of the articulated shaft of sector gear 6 and wears to establish the one end of table needle axle 1 on second chassis 3, then passes the other end of table needle axle 1, the other end of the articulated shaft of location sector gear 6 with first chassis 2 to fix first chassis 2 at the tip of first pillar 4 with second pillar 5 with the bolt. To restrict the axial displacement, the hinge shaft of the sector gear 6 and the hand shaft 1 may be provided in a stepped shaft shape having a large middle and small ends. Watch hand axle 1 and first chassis 2, second chassis 3 between clearance fit, watch hand axle 1 can relative rotation. Optionally, the two pillars may be detachably connected to the first chassis 2 and the second chassis 3.

Further, a pair of arc-shaped holes 9 which take the gauge needle shaft 1 as a circle center are symmetrically formed in the second base plate 3, the movement structure and the pressure gauge shell are fixed through screws at the arc-shaped holes 9, and the angle position of the second base plate 2 relative to the pressure gauge shell is favorably adjusted by setting the arc-shaped holes 9 so as to adjust the initial angle of the gauge needle shaft 1. The tail end of the sector gear 6 is provided with a long hole 10 for adjustably connecting a spring tube; under the same deformation condition of the spring tube, when the connection positions of the spring tube on the long hole 10 are different, the angle for driving the sector gear 6 to rotate is also different, so that the numerical values of the adjusting support on the dial are also different, and the long hole 10 can be used for adjusting the display precision of the pointer. Wherein the elongated holes 10 are arranged radially (centered on the hinging position).

When the movement structure is arranged in a pressure gauge capable of displaying on two sides, a known Bourdon-tube (Bourdon-tube), a spring tube or a corrugated tube and other sensitive elements are connected with the tail end of the sector gear 6 through a pull rod, and the deformation of the sensitive elements is caused by the pressure change of an object to be measured, so that the pull rod drives the sector gear 6 and the linkage gear 7 to rotate to indicate a pressure value. The movement mechanism can enable the pointer of the pressure gauge to be driven to rotate by the same gear 7, the same angle is rotated on the front side and the back side of the pressure gauge, double-side synchronous display and display accuracy of the pressure gauge are convenient, the structure is simple and compact, the size is small and exquisite and light, and installation in special requirement environments is convenient.

Example 2

The embodiment provides a pressure gauge capable of displaying double surfaces, which comprises a movement structure provided with the pressure gauge in the embodiment 1.

Furthermore, the pressure gauge also comprises a dial plate engraved with a number, a joint, a pull rod and a spring tube, wherein one end of the pull rod is connected with the spring tube, and the other end of the pull rod is connected with a sector gear 6 in the movement structure; the pressure gauge in the embodiment is provided with two dial plates which are arranged on the front and the back of the pressure gauge in a mirror image manner, and two ends of a gauge needle shaft 1 of a movement structure respectively penetrate through one dial plate and are connected with a pointer; the two pointers rotate on the same shaft at the same angle, and are displayed on the two dials in a consistent manner, so that the reading of an observer is ensured to be consistent. The dial, the joint, the pull rod, the spring tube and other parts are all universal parts of the existing pressure gauge.

The pressure gauge is additionally provided with the visual angle consistent with the front side on the basis of the existing single-side display pressure gauge, namely double-side display, the observation dead angle can be greatly reduced by using the pressure gauge, when an operator cannot stand on the front side, the pressure can be timely observed on the back side, observation and reading are convenient, and the pressure gauge is particularly suitable for being installed on a special device or part which is difficult to read by the operator.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A movement structure for double-sided display of a pressure gauge is characterized by comprising a gauge needle shaft (1), a first chassis (2) and a second chassis (3) which are oppositely arranged,

a gear (7) and a coil spring (8) are arranged on the watch needle shaft (1), two ends of the watch needle shaft (1) respectively and movably penetrate through the first chassis (2) and the second chassis (3),

the first chassis (2) and the second chassis (3) are connected by a strut which is fixedly connected with the free end of the coil spring (8),

a sector gear (6) is arranged between the first chassis (2) and the second chassis (3), the sector gear (6) is hinged to the first chassis (2) and the second chassis (3) on two sides respectively, and meanwhile, the sector gear (6) is meshed with a gear (7) arranged on the watch needle shaft (1).

2. The movement structure according to claim 1, wherein the hinge axes of the pillar, the watch hand shaft (1) and the sector gear (6) are in the same straight line with the connection positions of the first chassis (2) and the second chassis (3) on both sides.

3. The movement structure according to claim 2, characterized in that said pillar comprises a first pillar (4) and a second pillar (5), the articulated axes of said first pillar (4), said watch hand shaft (1), said second pillar (5) and said sector gear (6) being arranged in sequence, said sector gear (6) being provided with a hole for the movement of said second pillar (5).

4. Movement structure according to claim 1, characterized in that said first chassis (2) and/or said second chassis (3) are provided with at least one arched hole (9).

5. Movement structure according to claim 4, characterized in that said arc-shaped holes (9) are arranged centrally symmetrically with respect to said hands shaft (1).

6. Movement structure according to claim 1, characterized in that the sector gear (6) has an elongated hole (10) at its tail end.

7. Movement structure according to any one of claims 1 to 6, characterized in that said pillar is integrally connected to said first chassis (2) and in that it is screwed to said second chassis (3); or the support column is detachably connected with the first chassis (2) and the second chassis (3).

8. A pressure gauge with double-sided display, characterized by comprising the movement structure according to any one of claims 1-6, wherein two ends of the gauge pointer shaft (1) of the movement structure are respectively connected with a pointer.

9. The pressure gauge according to claim 8, further comprising a pull rod and a spring tube, wherein one end of the pull rod is connected with the spring tube, and the other end of the pull rod is connected with the sector gear (6).

10. The pressure gauge according to claim 8 or 9, characterized in that it further comprises two dial plates arranged in a mirror image manner, and the two ends of the gauge pointer shaft (1) of the movement structure respectively penetrate through one of the dial plates and are connected with the pointer.