CN110940387A

CN110940387A - External clamp for ultrasonic flowmeter

Info

Publication number: CN110940387A
Application number: CN201911279482.8A
Authority: CN
Inventors: 陈天柱
Original assignee: Xian Zhikai Industrial Automation Engineering Co Ltd
Current assignee: Xian Zhikai Industrial Automation Engineering Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-03-31

Abstract

The invention discloses an external clamp for an ultrasonic flowmeter, which comprises two clamp plates, wherein a first support plate is arranged between the tops of the two clamp plates, a second support plate is fixedly arranged on the top of the first support plate, a strip-shaped groove is formed in the top of the second support plate, an upstream sensor is arranged on one side inside the strip-shaped groove, and a downstream sensor is arranged on the other side inside the strip-shaped groove. The practicability is stronger.

Description

External clamp for ultrasonic flowmeter

Technical Field

The invention relates to an outer clamp structure, in particular to an outer clamp for an ultrasonic flowmeter.

Background

The invented ultrasonic flow meter is based on the principle of "speed difference method" and is used for measuring the flow of liquid in circular tube. The flow meter adopts advanced multi-pulse technology, signal digital processing technology and error correction technology, so that the flow meter can be more suitable for the environment of an industrial field, and the metering is more convenient, economic and accurate. The product reaches the advanced level at home and abroad, and can be widely applied to the fields of petroleum, chemical engineering, metallurgy, electric power, water supply and drainage and the like. The external clamp type ultrasonic flowmeter is fixed on a measured pipeline by an external fixing clamp.

In view of the above, chinese patent No. CN207751552U proposes an external clamp for an ultrasonic flowmeter, which can be tightly attached to a pipe wall by the action of a torsion spring, so as to fully ensure the measurement accuracy of the ultrasonic flowmeter, chinese patent No. CN207816377U proposes a pipe external clamp type flowmeter, which can be installed by fixing a first arch sleeve and a second arch sleeve to the outer wall of a pipe, and the spring on the inner wall of a clamp sleeve has a damping effect.

Disclosure of Invention

It is an object of the present invention to provide an outer clamp for an ultrasonic flow meter that solves the problems set forth in the background above.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an outer clamp for ultrasonic flowmeter, includes two splint, two be equipped with first backup pad between the top of splint, the fixed second backup pad that is equipped with in top of first backup pad, the bar groove has been seted up at the top of second backup pad, inside one side in bar groove is equipped with the upstream sensor, the inside opposite side in bar groove is equipped with the low reaches sensor.

Preferably, the spout has all been seted up at four edges at first backup pad top, and wherein two positions are adjacent the inside of spout alternates respectively and is connected with positive helical screw and anti-helical screw, the middle part of positive helical screw and anti-helical screw all overlaps and is equipped with the sliding block, two the one end of sliding block is passed the spout respectively with the top fixed connection of two splint.

Preferably, a transmission shaft is fixedly connected between the two forward spiral screws and the reverse spiral screw, one end of the reverse spiral screw penetrates through one of the chutes, and the reverse spiral screw is fixedly connected with the first rotary table.

Preferably, two the draw-in groove has all been seted up to one side of splint, one side cell wall fixedly connected with reset spring of draw-in groove, the fixed connecting rod that is equipped with of one end of reset spring, the one end fixedly connected with of connecting rod consolidates the clamping bar.

Preferably, the both sides inner wall in bar groove alternates respectively and is connected with first lead screw and second lead screw, the middle part of first lead screw is located to the fixed plate cover of upper reaches sensor bottom, the middle part of second lead screw is located to the fixed plate cover of low reaches sensor bottom, the one end of first lead screw and the one end of second lead screw all pass inlay the bearing of locating second backup pad inner wall, and fixedly connected with second carousel.

Preferably, the middle part of upstream sensor and the middle part of low reaches sensor all fix and are equipped with L type slide, the both sides of L type slide joint respectively in two avris of second backup pad.

Compared with the prior art, the invention has the beneficial effects that:

according to the pipeline clamping device, the sliding grooves are formed in the top of the first supporting plate, the forward spiral screw rod and the reverse spiral screw rod in the two sliding grooves can rotate simultaneously under the action of the transmission shaft, so that the two clamping plates are driven to move oppositely to clamp a tested pipeline, and the pipeline can be further reinforced and clamped by matching with the reset spring and the reinforcing clamping rod, so that the phenomenon that the clamping plates are loosened under long-time clamping to cause instable installation and measurement errors is avoided. Through being provided with first lead screw and second lead screw in the inside of bar groove, can be according to the interior fluidic position control of being surveyed of pipeline distance between two sensors, the practicality is stronger.

Drawings

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

FIG. 2 is a schematic structural view of a second supporting plate according to the present invention;

fig. 3 is a schematic view showing the internal structure of the splint and the first support plate according to the present invention.

In the figure: 1. a splint; 2. a first support plate; 3. a second turntable; 4. a strip-shaped groove; 5. an L-shaped slide plate; 6. an upstream sensor; 7. a first lead screw; 8. a second lead screw; 9. a second support plate; 10. a chute; 11. a positive helical screw; 12. a reverse-helical screw; 13. a first turntable; 14. reinforcing the clamping rod; 15. a slider; 16. a drive shaft; 17. a card slot; 18. a return spring; 19. a connecting rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention 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.

The first embodiment is as follows:

as shown in fig. 1-3, the clamp comprises two clamp plates 1, a first support plate 2 is arranged between the tops of the two clamp plates 1, a second support plate 9 is fixedly arranged on the top of the first support plate 2, a strip-shaped groove 4 is formed in the top of the second support plate 9, an upstream sensor 6 is arranged on one side inside the strip-shaped groove 4, a downstream sensor is arranged on the other side inside the strip-shaped groove 4, sliding grooves 10 are formed in four corners of the top of the first support plate 2, wherein a forward spiral screw 11 and a reverse spiral screw 12 are respectively inserted and connected into the insides of the two sliding grooves 10 adjacent to each other, sliding blocks 15 are respectively sleeved on the middles of the forward spiral screw 11 and the reverse spiral screw 12, one end of each sliding block 15 penetrates through the sliding groove 10 and is respectively and fixedly connected with the tops of the two clamp plates 1, a transmission shaft 16 is fixedly connected between the two forward spiral screws 11 and, the screw rod can turn into rectilinear motion with rotary motion, because the screw thread that positive helical screw 11 and anti-helical screw 12 carved and establish is opposite, consequently both rotate accessible spout 10 and drive two sliding blocks 15 and two splint 1 and make the motion in opposite directions, thereby press from both sides tightly the pipeline being surveyed, one of them spout 10 is passed to the one end of anti-helical screw 12, and the first carousel 13 of fixedly connected with, draw-in groove 17 has all been seted up to one side of two splint 1, one side cell wall fixedly connected with reset spring 18 of draw-in groove 17, reset spring 18's the fixed connecting rod 19 that is equipped with of one end, the one end fixedly connected with of connecting rod 19 consolidates clamping bar 14, consolidate clamping bar 14 is the arc, can effectively the joint by the pipeline being surveyed, make splint 1 and pipe.

Example two:

as shown in fig. 2-3, the inner walls of the two sides of the strip-shaped groove 4 are respectively inserted and connected with a first lead screw 7 and a second lead screw 8, the fixing plate at the bottom of the upstream sensor 6 is sleeved at the middle part of the first lead screw 7, the fixing plate at the bottom of the downstream sensor is sleeved at the middle part of the second lead screw 8, one end of the first lead screw 7 and one end of the second lead screw 8 both penetrate through a bearing embedded at the inner wall of the second supporting plate 9, and are fixedly connected with the second turntable 3, the first lead screw 7 or the second lead screw 8 rotates, the first lead screw 7 rotates to drive the upstream sensor 6 to slide in the strip-shaped groove 4 through an L-shaped sliding plate 5, and similarly, the second lead screw 8 rotates to drive the downstream sensor to slide, so that the distance between the two sensors can be adjusted according to the position of the measured fluid, the L-shaped sliding plates 5 are fixedly arranged at the middle parts of the upstream sensor 6 and the downstream sensor, the L-shaped slide 5 makes the upstream sensor 6 and the downstream sensor more stable when sliding.

It should be noted that, when the external clamp for ultrasonic flowmeter is used, the two clamp plates 1 can be firstly sleeved on two sides of the pipeline to be measured, and two arc-shaped reinforcing clamp rods 14 are clamped on two sides of the pipeline, then the first rotary disc 13 is rotated, the first rotary disc 13 is rotated to drive the forward spiral screw 11 to rotate, the forward spiral screw 11 rotates to drive the reverse spiral screw 12 to rotate through the transmission shaft 16, the screw can convert the rotary motion into linear motion, because the threads engraved on the forward spiral screw 11 and the reverse spiral screw 12 are opposite, the forward spiral screw 11 and the reverse spiral screw 12 can drive the two sliding blocks 15 and the two clamp plates 1 to move in opposite directions through the sliding chute 10, so as to clamp the pipeline to be measured, in the moving process, the reinforcing clamp rods 14 push the return springs 18 under the action of the clamp plates 1, the return springs 18 contract and generate reactive elasticity to push the reinforcing clamp rods 14 and enable the reinforcing clamp rods to be clamped on the surface of the pipeline more stably, after the centre gripping is stable, rotatable one of them second carousel 3 drives first lead screw 7 and second lead screw 8 and rotates, and first lead screw 7 rotates and drives upstream sensor 6 and slides in the inside of bar groove 4 through L type slide 5, and the rotation of the second lead screw 8 can drive the downstream sensor and slide like this, can be according to the distance between two sensors of the position control of surveyed fluidic from this.

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 invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an outer clamp for ultrasonic flowmeter, includes two splint (1), its characterized in that, two be equipped with first backup pad (2) between the top of splint (1), the fixed second backup pad (9) that is equipped with in top of first backup pad (2), bar groove (4) have been seted up at the top of second backup pad (9), inside one side in bar groove (4) is equipped with upstream transducer (6), the inside opposite side in bar groove (4) is equipped with low reaches sensor.

2. The outer clamp for an ultrasonic flow meter according to claim 1, wherein: spout (10) have all been seted up to four edges at first backup pad (2) top, and wherein two positions are adjacent the inside of spout (10) alternates respectively and is connected with positive helical screw (11) and anti-helical screw (12), the middle part of positive helical screw (11) and anti-helical screw (12) all is equipped with sliding block (15), two the one end of sliding block (15) is passed spout (10) respectively with the top fixed connection of two splint (1).

3. The outer clamp for an ultrasonic flow meter of claim 2, wherein: two fixedly connected with transmission shaft (16) between positive helical screw (11) and the reverse helical screw (12), one of them spout (10) is passed to one end of reverse helical screw (12), and fixedly connected with first carousel (13).

4. The collet of claim 3, wherein: two draw-in groove (17) have all been seted up to one side of splint (1), one side cell wall fixedly connected with reset spring (18) of draw-in groove (17), the fixed connecting rod (19) that is equipped with of one end of reset spring (18), the one end fixedly connected with reinforcement clamping bar (14) of connecting rod (19).

5. The outer clamp for an ultrasonic flow meter according to claim 1, wherein: the both sides inner wall in bar groove (4) alternates respectively and is connected with first lead screw (7) and second lead screw (8), the middle part of first lead screw (7) is located to the fixed plate cover of upper reaches sensor (6) bottom, the middle part of second lead screw (8) is located to the fixed plate cover of low reaches sensor bottom, the bearing of inlaying in second backup pad (9) inner wall is all passed to the one end of first lead screw (7) and the one end of second lead screw (8), and fixedly connected with second carousel (3).

6. The outer clamp for an ultrasonic flow meter according to claim 1, wherein: the middle part of upper reaches sensor (6) and the middle part of low reaches sensor all fixedly are equipped with L type slide (5), the both sides of L type slide (5) joint respectively in two avris of second backup pad (9).