CN211121403U - External clamp for ultrasonic flowmeter - Google Patents

Abstract

The utility model 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 at the top of the first support plate, a strip-shaped groove is arranged at the top of the second support plate, an upstream sensor is arranged at one side inside the strip-shaped groove, and a downstream sensor is arranged at the other side inside the strip-shaped groove, the utility model discloses a slide groove is arranged at the top of the first support plate, wherein a forward spiral screw rod and a reverse spiral screw rod inside the two slide grooves can simultaneously rotate under the action of a transmission shaft, so as to drive the two clamp plates to move oppositely, clamp a measured pipeline, simultaneously cooperate with a reset spring and a reinforcing clamping rod to further reinforce and clamp the pipeline, prevent the clamp plates from loosening under long-time clamping, and adjust the distance between the two sensors according to the position of a measured fluid in the pipeline by arranging a first screw rod and a second screw rod, the practicability is stronger.

Description

External clamp for ultrasonic flowmeter

Technical Field

The utility model relates to an outer structure of pressing from both sides, in particular to outer clamp for 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.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an outer clamp for ultrasonic flowmeter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a 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 downstream 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 beneficial effects of the utility model are that:

the utility model discloses in, through having seted up the spout at the top of first backup pad, wherein two inside positive helical screw of spout and anti-helical screw can rotate simultaneously under the effect of transmission shaft to drive two splint and make the opposite motion, press from both sides tightly the pipeline under survey, cooperate reset spring and reinforcement clamping bar simultaneously and can further consolidate and press from both sides tightly the pipeline, avoid splint to appear the pine and fall under long-time centre gripping, lead to the instable measuring error that appears of installation. 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 support plate of the present invention;

fig. 3 is a schematic view of the internal structure of the clamping plate and the first supporting plate of the present invention.

In the figure, the device comprises a clamp plate 1, a clamp plate 2, a first supporting plate 3, a second rotary table 4, a strip-shaped groove 5, L type sliding plate 6, an upstream sensor 7, a first lead screw 7, a second lead screw 8, a second lead screw 9, a second supporting plate 10, a sliding groove 11, a forward spiral screw 12, a reverse spiral screw 13, a first rotary table 13, a reinforcing clamp rod 14, a sliding block 15, a transmission shaft 16, a clamping groove 17, a return spring 18, a return spring 19 and a connecting rod.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" 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 simplification of description, but do not indicate or imply that the device or element to which the reference is made 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, and for example, "connected" may be either fixedly connected or 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 meaning 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 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 of the first lead screw 7, the fixing plate at the bottom of the downstream sensor is sleeved at the middle 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 the second turntable 3 is fixedly connected with the first lead screw 7 or the second lead screw 8, the first lead screw 7 rotates to drive the upstream sensor 6 to slide in the strip-shaped groove 4 through the L-type 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 middle of the upstream sensor 6 and the middle of the downstream sensor are both fixedly provided with the L-type sliding plate 5, two sides of the L-type sliding plate 5 are respectively clamped at two sides of the second supporting.

It should be noted that, the utility model relates to an outer clamp for ultrasonic flowmeter, during the use, can establish 1 cover of two splint in the both sides of being surveyed the pipeline earlier, and make two curved reinforcement clamping bar 14 centre grippings in the both sides of pipeline, then rotate first carousel 13, first carousel 13 rotates and drives positive helical screw 11 and rotate, positive helical screw 11 rotates and drives reverse helical screw 12 through transmission shaft 16 and rotate, the screw rod can turn into linear motion rotary motion, because the screw that positive helical screw 11 and reverse helical screw 12 carved and establish is opposite, therefore both rotate accessible spout 10 and drive two sliding blocks 15 and two splint 1 and make the relative motion, thereby press from both sides tightly to being surveyed the pipeline, in the motion process, reinforcement clamping bar 14 moves reset spring 18 under splint 1's effect, reset spring 18 shrink produces the reaction elasticity, it fixes a position clamping bar 14 and makes its surface more steadily centre gripping at the pipeline to promote, after the centre gripping is stable, one of them second carousel 3 drives first lead screw 7 and second lead screw 8 and rotates, first lead screw 7 rotates type slide up slide 355 and can be driven through the strip sensor in the downstream of the rotatable position of second, can be based on the downstream sensor, the slip adjustment distance of the downstream sensor from this.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

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 the ultrasonic flowmeter as claimed in claim 1, wherein an L-type slide plate (5) is fixedly arranged at each of the middle part of the upstream transducer (6) and the middle part of the downstream transducer, and two sides of the L-type slide plate (5) are respectively clamped on two side edges of the second support plate (9).

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