Non-contact water flow sensor convenient to use

Abstract

The non-contact water flow sensor convenient to use comprises a first support, a rotating shaft is rotationally arranged in the center of the first support, and a sliding frame is sleeved with the rotating shaft in a sliding mode; the sliding frame is provided with a clamping rod; a first transmission structure is arranged between the sliding frame and the rotating shaft; spacing adjusting mechanisms are arranged at the two ends of the first bracket; the distance adjusting mechanism comprises a second support hinged to the first support. An ultrasonic probe is slidably arranged on the second bracket; a second transmission structure is arranged between the ultrasonic probe and the rotating shaft; when the sliding frame slides, the first transmission structure drives the rotating shaft to drive the winding wheel to rotate, the winding wheel drives the ultrasonic probe to move synchronously through the second transmission structure, and the sliding displacement of the ultrasonic probe is equal to that of the sliding frame; the error generated by position adjustment is effectively reduced, the measurement efficiency and the measurement precision are improved, the consistency of the measurement precision is ensured, and the operation is simple.

Description

Technical Field

[0001] The invention relates to the technical field of flow measurement, and in particular to an easy-to-use non-contact water flow sensor. Background Art

[0002] A portable ultrasonic flow sensor is a flow sensor that can realize non-contact measurement of fluid flow in a pipeline. During use, existing portable ultrasonic sensors require the ultrasonic probe to be fixed on the pipeline surface, and then the spacing of the ultrasonic probes must be adjusted according to the pipeline diameter. The operation is cumbersome and the measurement efficiency is low. At the same time, manual adjustment of the spacing also directly affects the measurement accuracy of the sensor, resulting in poor consistency in measurement accuracy. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an easy-to-use non-contact water flow sensor, which effectively reduces the error caused by adjusting the position, improves the measurement efficiency and measurement accuracy to ensure the consistency of measurement accuracy, and is simple to operate.

[0004] To achieve the above object, the specific scheme of the present invention is as follows: A non-contact water flow sensor that is easy to use, comprising a first bracket, a rotating shaft is rotatably arranged at the center of the first bracket, and the rotating shaft is slidably sleeved on a sliding frame; the sliding frame is provided with a clamping rod; and a first transmission structure is provided between the sliding frame and the rotating shaft; Both ends of the first bracket are provided with a spacing adjustment mechanism; the spacing adjustment mechanism comprises a second bracket hinged to the first bracket; the second bracket is slidably provided with an ultrasonic probe, and a second transmission structure is provided between the ultrasonic probe and the rotating shaft; When the sliding frame slides, the first transmission structure drives the rotating shaft to drive the winding wheel to rotate, and the winding wheel drives the ultrasonic probe to move synchronously through the second transmission structure, and the sliding displacement of the ultrasonic probe is equal to the sliding displacement of the sliding frame.

[0005] Optionally, the first transmission structure includes a spiral groove arranged on the outer peripheral wall of the rotating shaft and a bayonet arranged on the sliding frame, and the bayonet is movably embedded in the spiral groove.

[0006] Optionally, the rotating shaft is provided with a winding wheel; the second transmission structure comprises a traction rope, a fixed pulley and a first spring; the fixed pulley is rotatably connected to an end of the second bracket away from the first bracket; one end of the traction rope is arranged on the winding wheel along the tangent direction of the winding wheel, and the other end is connected to the ultrasonic probe after being wound around the fixed pulley; the first spring is arranged between the ultrasonic probe and the end of the second bracket away from the first bracket; The spacing adjustment mechanism has a folded state and an unfolded state. In the folded state, the two second brackets are arranged side by side. In the unfolded state, the two second brackets are in the same straight line. The angle between the emission direction of the ultrasonic probe and the axis of the rotating shaft is forty-five degrees.

[0007] Optionally, guide blocks are provided at both ends of the first bracket, the two guide blocks are symmetrically distributed around the center, each guide block is provided with a Z-shaped guide hole, and the traction rope is passed through the guide hole.

[0008] Optionally, the guide block is provided with a first receiving groove connected to the guide hole at a position of the guide hole close to one end of the second bracket, so that the traction rope can be received in the first receiving groove when the spacing adjustment mechanism is in a folded state.

[0009] Optionally, the outer periphery of the winding wheel and the outer periphery of the fixed pulley are both provided with an annular second receiving groove to accommodate the traction rope.

[0010] Optionally, the ultrasonic probe includes a probe body slidably connected to the second bracket, and the probe body is connected to the other end of the traction rope; the probe body has a contact concave surface, and the probe body has an installation groove concave on the contact concave surface, an ultrasonic device is arranged in the installation groove, a cover plate is provided at the opening position of the installation groove, a flexible coupling pad is provided on the cover plate, a sliding seat is slidably provided on the outer periphery of the installation groove of the probe body, a second spring is connected between the sliding seat and the probe body, and a wear-resistant ring is provided on the outer periphery of the sliding seat.

[0011] Optionally, permanent magnets are provided at both ends of the contact concave surface.

[0012] Optionally, the clamping rod comprises a first clamping rod and a second clamping rod, one end of the first clamping rod is fixedly connected to the sliding frame, and one end of the second clamping rod is hinged to the other end of the first clamping rod.

[0013] Optionally, a guide frame is fixed on the first bracket, two ends of the sliding frame are slidably sleeved with the guide frame, and one end of the rotating shaft away from the first bracket is rotatably connected with the guide frame.

[0014] The beneficial effects of the present invention are as follows: the present invention cooperates with the sliding frame, the rotating shaft, the first transmission structure, the second transmission structure and the ultrasonic probe, so that when the clamping rod is clamping the pipe, the position of the ultrasonic probe is adaptively adjusted, the error caused by the adjustment position is effectively reduced, the measurement efficiency and measurement accuracy are improved, the consistency of the measurement accuracy is ensured, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional diagram of the present invention when the spacing adjustment mechanism is in an unfolded state; Figure 2is a three-dimensional diagram of the present invention when the spacing adjustment mechanism is in a folded state; Figure 3 It is a schematic diagram of the use of the present invention; Figure 4 is a three-dimensional diagram of the spacing adjustment mechanism of the present invention; Figure 5 is a stereogram of the ultrasonic probe of the present invention; Figure 6 is a cross-sectional schematic diagram of the ultrasonic probe of the present invention; Figure 7 It is a structural schematic diagram of the guide block of the present invention; Explanation of the reference numerals: 1. first bracket; 11. guide block; 111. guide hole; 112. first accommodating groove; 12. guide frame; 2. rotating shaft; 21. spiral groove; 22. winding wheel; 3. sliding frame; 31. latch pin; 4. clamping rod; 41. first clamping rod; 42. second clamping rod; 51. second bracket; 52. ultrasonic probe; 521. probe body; 5211. contact concave surface; 522. ultrasonic device; 523. cover plate; 524. coupling pad; 525. sliding seat; 526. second spring; 527. wear-resistant ring; 528. permanent magnet; 53. traction rope; 54. fixed pulley; 55. first spring. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0017] like Figures 1 to 7 As shown, a non-contact water flow sensor that is easy to use in this embodiment includes a first bracket 1, a rotating shaft 2 is rotatably provided at the center of the first bracket 1, the rotating shaft 2 is slidably sleeved on a sliding frame 3, and the rotating shaft 2 is provided with a winding wheel 22; a clamping rod 4 is provided at one end of the sliding frame 3 away from the first bracket 1; a first transmission structure is provided between the sliding frame 3 and the rotating shaft 2; both ends of the first bracket 1 are provided with a spacing adjustment mechanism; the spacing adjustment mechanism includes a second bracket 51 hinged to the first bracket 1; the second bracket 51 is slidably provided with an ultrasonic probe 52, and a second transmission structure is provided between the ultrasonic probe 52 and the rotating shaft 2; When the sliding frame 3 slides, the first transmission structure drives the rotating shaft 2 to drive the winding wheel 22 to rotate, and the winding wheel 22 drives the ultrasonic probe 52 to move synchronously through the second transmission structure, and the sliding displacement of the ultrasonic probe 52 is equal to the sliding displacement of the sliding frame 3. In actual application, one ultrasonic probe 52 is a transmitting end, and the other ultrasonic probe 52 is a receiving end.

[0018] Specifically, when measuring, the non-contact water flow sensor described in this embodiment slides the sliding frame 3 toward the first bracket 1, the sliding frame 3 drives the clamping rod 4 to move, the sliding frame 3 drives the rotating shaft 2 to rotate through the first transmission structure, and the rotating shaft 2 drives the ultrasonic probe 52 to slide in the direction away from the first bracket 1 through the second transmission structure. At this time, the clamping distance between the clamping rod 4 and the first bracket 1 is the largest; after completion, the entire flow sensor is clamped into a predetermined measurement position of the pipeline to be measured, so that the ultrasonic probe 52 is close to the pipe wall; after adjusting the position, the two ultrasonic probes 52 move towards each other, and the rotating shaft 2 rotates in the opposite direction, so that the sliding frame 3 slides away from the first bracket 1, so that the clamping distance between the clamping rod 4 and the first bracket 1 is reduced, until the clamping rod 4 is close to the pipe wall, the sliding frame 3 and the ultrasonic probe 52 stop sliding, and the entire flow sensor is clamped on the side wall of the pipeline, and the installation of the flow sensor is completed. Figure 3 As shown; In this process, the sliding frame 3 and the ultrasonic probe 52 move synchronously, and the clamping rod 4 adjusts the distance between the sliding frame 3 and the first bracket 1 according to the different diameters of the pipeline while clamping the pipeline, thereby driving the ultrasonic probe 52 to adaptively change the distance between the two ultrasonic probes 52 according to the diameter of the pipeline to be measured, thereby ensuring that the ultrasonic signal emitted by the transmitting end can be accurately received by the receiving end after V-shaped reflection, so as to ensure the consistency of measurement accuracy.

[0019] In this embodiment, the sliding frame 3, the rotating shaft 2, the first transmission structure, the second transmission structure and the ultrasonic probe 52 cooperate with each other, so that when the clamping rod 4 is clamping the pipe, the position of the ultrasonic probe 52 is adaptively adjusted, the error caused by the adjustment position is effectively reduced, the measurement efficiency and measurement accuracy are improved, the consistency of the measurement accuracy is ensured, and the operation is simple.

[0020] like Figure 1 and Figure 2 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, the first transmission structure includes a spiral groove 21 provided on the outer peripheral wall of the rotating shaft 2 and a bayonet 31 provided on the sliding frame 3, and the bayonet 31 is movably embedded in the spiral groove 21. Specifically, the number of the spiral groove 21 and the bayonet 31 are both set to two. In this way, through the cooperation of the spiral groove 21 and the bayonet 31, the linear motion of the sliding frame 3 is converted into the rotational motion of the rotating shaft 2, or the rotational motion of the rotating shaft 2 is converted into the linear motion of the sliding frame 3, thereby realizing the linkage between the sliding frame 3 and the rotating shaft 2.

[0021] like Figures 1 to 4As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, the rotating shaft 2 is provided with a winding wheel 22; the second transmission structure includes a traction rope 53, a fixed pulley 54 and a first spring 55; the fixed pulley 54 is rotatably connected to the end of the second bracket 51 away from the first bracket 1; one end of the traction rope 53 is arranged on the winding wheel 22 along the tangent direction of the winding wheel 22, and the other end is connected to the ultrasonic probe 52 after being wound around the fixed pulley 54; the first spring 55 is arranged between the ultrasonic probe 52 and the end of the second bracket 51 away from the first bracket 1; The spacing adjustment mechanism has a folded state and an unfolded state. In the folded state, the two second brackets 51 are arranged side by side. In the unfolded state, the two second brackets 51 are in the same straight line. The angle between the emission direction of the ultrasonic probe 52 and the axis of the rotating shaft 2 is forty-five degrees.

[0022] Specifically, in the natural state, the spacing adjustment mechanism is in a folded state, such as Figure 2 As shown, in order to reduce the space occupied; when measuring, the spacing adjustment mechanism in the folded state is opened to the unfolded state, as shown Figure 3 As shown, the sliding frame 3 is pushed to the inside, that is, the sliding frame 3 is pushed to abut against the first bracket 1. During this process, the sliding frame 3 drives the rotating shaft 2 to rotate through the bayonet 31 and the spiral groove 21, and the winding wheel 22 winds up the traction rope 53, so that the rotating shaft 2 pulls the ultrasonic probe 52 to slide in the direction away from the first bracket 1 through the traction rope 53, so that the first spring 55 is compressed. At this time, the ultrasonic probe 52 is at the outermost side, and the clamping distance between the clamping rod 4 and the first bracket 1 is the largest. Then, the entire flow sensor is clamped into the predetermined measurement position of the pipeline to be measured, so that the ultrasonic probe 52 is close to the pipe wall. Then, the thrust on the sliding frame 3 is released. At this time, the first spring 55 is restored, pushing the ultrasonic probe 52 to slide toward the first bracket 1. The ultrasonic probe 52 pulls the winding wheel 22 to rotate in the opposite direction through the traction rope 53 to unwind the traction rope 53, so that the rotating shaft 2 rotates synchronously. At this time, the rotating shaft 2 cooperates with the spiral groove 21 and the bayonet 31 to drive the sliding frame 3 to slide away from the first bracket 1, so that the clamping distance between the clamping rod 4 and the first bracket 1 is reduced. Until the clamping rod 4 is against the pipe wall, the sliding frame 3 and the ultrasonic probe 52 stop sliding, and the entire flow sensor is clamped on the side wall of the pipeline, thereby completing the installation of the flow sensor. Figure 3As shown; during the clamping process, the movement displacements of the ultrasonic probe 52 and the clamping rod 4 are equal, and the angle between the emission direction of the ultrasonic probe 52 and the axis of the rotating shaft 2 is forty-five degrees, so that the angle between the emission direction of the ultrasonic probe 52 and the axis is forty-five degrees at any position, thereby effectively reducing the error caused by adjusting the position, improving the measurement efficiency and measurement accuracy, and achieving better consistency in measurement accuracy; then the two ultrasonic probes 52 work to measure the water flow in the pipe to be measured.

[0023] In this embodiment, by setting the traction rope 53, the spring and the fixed pulley 54, the clamping rod 4 can adjust the clamping distance according to the different diameters of the pipeline while clamping the pipeline, and synchronously drive the ultrasonic probes 52 to adaptively change the distance between the ultrasonic probes 52 according to the diameter of the pipeline to be tested, so as to ensure that the ultrasonic signal emitted by the transmitting end can be accurately received by the receiving end after V-shaped reflection.

[0024] After the measurement is completed, the sliding frame 3 is pushed inward again so that the clamping rod 4 releases the pipeline, and the entire flow sensor can be removed from the pipeline, and then the spacing adjustment mechanism is placed in a folded state. In this way, the spacing adjustment mechanism can be switched between the folded state and the unfolded state, which is more convenient to use.

[0025] like Figure 1 , Figure 2 and Figure 7 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, guide blocks 11 are provided at both ends of the first bracket 1, and the two guide blocks 11 are symmetrically distributed. Each guide block 11 is provided with a Z-shaped guide hole 111, and the traction rope 53 is passed through the guide hole 111. In this embodiment, the guide blocks 11 are provided to provide guidance for the traction rope 53, so that the traction rope 53 is smoother during the winding and unwinding process.

[0026] like Figure 7 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, the guide block 11 is provided with a first receiving groove 112 in communication with the guide hole 111 at a position of the guide hole 111 close to one end of the second bracket 51, so that when the spacing adjustment mechanism is in a folded state, the traction rope 53 can be accommodated in the first receiving groove 112. In this embodiment, by providing the first receiving groove 112, after the spacing adjustment mechanism is folded, the bent traction rope 53 can be accommodated in the first receiving groove 112, thereby making the folded flow sensor more compact.

[0027] In some embodiments of the non-contact water flow sensor described in this embodiment, the outer periphery of the reel 22 and the outer periphery of the fixed pulley 54 are both provided with an annular second receiving groove (not shown in the figure) to accommodate the traction rope 53. In this embodiment, the second receiving groove is provided so that the reel 22 and the fixed pulley 54 can be more firmly connected with the traction rope 53, which is not easy to slip off, and is also convenient for accommodating the traction rope 53.

[0028] like Figures 1 to 6 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, the ultrasonic probe 52 includes a probe body 521 slidably connected to the second bracket 51, and the probe body 521 is connected to the other end of the traction rope 53; the probe body 521 has a contact concave surface 5211, and the probe body 521 has a mounting groove concavely formed on the contact concave surface 5211, and an ultrasonic device 522 is arranged in the mounting groove, and a cover plate 523 is arranged at the opening position of the mounting groove, and a flexible coupling pad 524 is arranged on the cover plate 523, and a sliding seat 525 is slidably arranged on the outer periphery of the mounting groove of the probe body 521, and a second spring 526 is connected between the sliding seat 525 and the probe body 521, and a wear-resistant ring 527 is arranged on the outer periphery of the sliding seat 525. Specifically, the ultrasonic device 522 in the ultrasonic probe 52 at the transmitting end is an ultrasonic generator, and the ultrasonic device 522 in the ultrasonic probe 52 at the receiving end is an ultrasonic receiver.

[0029] In this embodiment, a contact concave surface 5211 is provided on the probe body 521 so that the probe body 521 can better fit the pipe wall, a wear-resistant ring 527 is provided to reduce the friction between the ultrasonic probe 52 and the pipe wall, and a flexible coupling pad 524 is provided so that when the coupling pad 524 contacts the pipe wall, it can adaptively deform and contact and fit the pipe wall to conduct ultrasonic waves; when the wear-resistant ring 527 contacts the pipe wall, as the pipe wall squeezes the wear-resistant ring 527, the sliding seat 525 compresses the second spring 526, so that the coupling point protrudes out and contacts and fits the pipe wall to reliably conduct ultrasonic waves, and thus the sliding seat 525 and the second spring 526 cooperate to protect the coupling pad 524.

[0030] like Figures 4 to 6 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, permanent magnets 528 are provided at both ends of the contact concave surface 5211. In this embodiment, the permanent magnets 528 are provided to adsorb the ferromagnetic pipe, which facilitates the placement and installation of the flow sensor.

[0031] like Figures 1 to 3As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, the clamping rod 4 includes a first clamping rod 41 and a second clamping rod 42, one end of the first clamping rod 41 is fixedly connected to the sliding frame 3, and one end of the second clamping rod 42 is hinged to the other end of the first clamping rod 41. In this embodiment, the first clamping rod 41 and the second clamping rod 42 are hinged to the first clamping rod 41, so that the clamping rod 4 can fold and store the second clamping rod 42 during non-measurement to reduce space occupation; and during measurement, the second clamping rod 42 can be opened, at this time, the second clamping rod, the first clamping rod 41, and the first bracket 1 form a U-shaped clamping opening, and the distance between the second clamping rod 4 and the first bracket 1 is the clamping distance.

[0032] like Figures 1 to 3 As shown, in the non-contact water flow sensor described in this embodiment, in some embodiments, a guide frame 12 is fixed to the first bracket 1, both ends of the sliding frame 3 are slidably sleeved with the guide frame 12, and one end of the rotating shaft 2 away from the first bracket 1 is rotatably connected with the guide frame 12. In this embodiment, by providing the guide frame 12, a guide and a limit are provided for the sliding frame 3, so that the sliding of the sliding frame 3 is more stable, and the rotation of the rotating shaft 2 is more stable, and the structural reliability is higher.

[0033] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. A non-contact water flow sensor that is easy to use, characterized in that: It comprises a first bracket, the center of the first bracket is rotatably provided with a rotating shaft, the rotating shaft is slidably sleeved on the sliding frame; the sliding frame is provided with a clamping rod; a first transmission structure is provided between the sliding frame and the rotating shaft; Both ends of the first bracket are provided with a spacing adjustment mechanism; the spacing adjustment mechanism comprises a second bracket hinged to the first bracket; the second bracket is slidably provided with an ultrasonic probe, and a second transmission structure is provided between the ultrasonic probe and the rotating shaft; When the sliding frame slides, the first transmission structure drives the rotating shaft to drive the winding wheel to rotate, and the winding wheel drives the ultrasonic probe to move synchronously through the second transmission structure, and the sliding displacement of the ultrasonic probe is equal to the sliding displacement of the sliding frame.

2. A non-contact water flow sensor that is easy to use according to claim 1, characterized in that: The first transmission structure comprises a spiral groove arranged on the outer peripheral wall of the rotating shaft and a bayonet arranged on the sliding frame, and the bayonet is movably embedded in the spiral groove.

3. The non-contact water flow sensor according to claim 1 is characterized in that: The rotating shaft is provided with a winding wheel; the second transmission structure includes a traction rope, a fixed pulley and a first spring; the fixed pulley is rotatably connected to the end of the second bracket away from the first bracket; one end of the traction rope is arranged on the winding wheel along the tangent direction of the winding wheel, and the other end is connected to the ultrasonic probe after being wound around the fixed pulley; the first spring is arranged between the ultrasonic probe and the end of the second bracket away from the first bracket; The spacing adjustment mechanism has a folded state and an unfolded state. In the folded state, the two second brackets are arranged side by side. In the unfolded state, the two second brackets are in the same straight line. The angle between the emission direction of the ultrasonic probe and the axis of the rotating shaft is forty-five degrees.

4. A non-contact water flow sensor that is easy to use according to claim 3, characterized in that: Both ends of the first bracket are provided with guide blocks, the two guide blocks are centrally symmetrically distributed, each guide block is provided with a Z-shaped guide hole, and the traction rope is passed through the guide hole.

5. The non-contact water flow sensor according to claim 4 is characterized in that: The guide block is provided with a first receiving groove communicated with the guide hole at a position of the guide hole close to one end of the second bracket, so that the traction rope can be received in the first receiving groove when the spacing adjustment mechanism is in a folded state.

6. The non-contact water flow sensor that is easy to use according to claim 3 is characterized in that: The outer periphery of the winding wheel and the outer periphery of the fixed pulley are both provided with an annular second accommodating groove for accommodating the traction rope.

7. The non-contact water flow sensor that is easy to use according to claim 3 is characterized in that: The ultrasonic probe includes a probe body slidably connected to the second bracket, and the probe body is connected to the other end of the traction rope; the probe body has a contact concave surface, and the probe body has a mounting groove concave on the contact concave surface, an ultrasonic device is arranged in the mounting groove, a cover plate is arranged at the opening position of the mounting groove, a flexible coupling pad is arranged on the cover plate, a sliding seat is slidably arranged on the outer periphery of the mounting groove for the probe body, a second spring is connected between the sliding seat and the probe body, and a wear-resistant ring is arranged on the outer periphery of the sliding seat.

8. The non-contact water flow sensor that is easy to use according to claim 7 is characterized in that: Permanent magnets are arranged at both ends of the contact concave surface.

9. The non-contact water flow sensor that is easy to use according to claim 1, characterized in that: The clamping rod comprises a first clamping rod and a second clamping rod, one end of the first clamping rod is fixedly connected to the sliding frame, and one end of the second clamping rod is hinged to the other end of the first clamping rod.

10. The non-contact water flow sensor that is easy to use according to claim 1, characterized in that: A guide frame is fixed on the first bracket, two ends of the sliding frame are slidably sleeved with the guide frame, and one end of the rotating shaft away from the first bracket is rotatably connected with the guide frame.

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