CN212060310U - Flow velocity meter for water transport engineering measurement - Google Patents

Abstract

The utility model relates to a velocity of flow detection device's field, concretely relates to current meter is used in water conservancy project measurement, it includes the measuring staff, be equipped with velocity of flow sensor on the measuring staff, still including the counter that is used for calculating velocity of flow sensor survey data, fixedly connected with main baffle and inferior baffle on the measuring staff, main baffle and inferior baffle perpendicular to measuring staff, the cover has the rotating ring on the measuring staff, the rotating ring is located between main baffle and the inferior baffle, velocity of flow sensor rotates and connects on the rotating ring lateral wall, velocity of flow sensor's axis of rotation is perpendicular with the axis of rotation of rotating ring, velocity of flow sensor includes propeller and fin, the propeller is located velocity of flow sensor's one end, the fin is located velocity of flow sensor and keeps away from the other end of propeller, the fin includes a plurality of paddles, the paddle is parallel with the. The utility model discloses have and change and obtain accurate detection data for the higher effect of the detection data accuracy of the velocity of flow.

Description

Flow velocity meter for water transport engineering measurement

Technical Field

The utility model belongs to the technical field of the technique of velocity of flow detection device and specifically relates to a current meter is used in water conservancy project measurement.

Background

The water transportation is a traditional transportation mode, and during the transportation process, the water transportation is greatly influenced when the water flow rate changes, and the change of the flow rate needs to be known during the water transportation, so that an instrument for water transportation engineering measurement is needed to monitor the flow rate.

At present, hydrology tests in water transportation engineering usually use a current meter to measure the flow rate of water, and a propeller current meter is one of the current flow meters.

The existing propeller type current meter comprises a measuring rod, a current sensor is sleeved on the measuring rod through a fixed rod screw, the current sensor comprises a support, a rotating part is fixedly connected with the support, a propeller is connected to one end of the rotating part, and one end, far away from the propeller, of the support is connected with an empennage through threads. During detection, the assembled current meter is inserted into an underwater appointed position, under the driving force of water flow, a rotating propeller of the current sensor rotates around a horizontal supporting shaft to drive a rotor part of a rotating part to synchronously rotate, a magnetic steel arranged on the rotor excites a reed pipe to generate an on-off signal, and the signal is transmitted to a counter through a conducting wire, so that the counter calculates the current velocity, and the purpose of measuring the current velocity is achieved.

The above prior art solutions have the following drawbacks:

however, current propeller type current meter, because flow sensor passes through the fixed cover of solid pole screw on the measuring staff, lead to flow sensor can only be at the velocity of flow in the single direction, when rivers were multi-direction change among the measurement process, flow sensor can not be through the direction of automatically regulated self angle in order to be on a parallel with rivers as far as possible for rivers drive propeller rotation's effect and descend, make rotatory rotational speed descend, thereby lead to measuring the velocity of flow precision that obtains not high, consequently also improve the space.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a current meter for water conservancy project survey, it has changes obtains accurate detected data for the higher effect of the detected data accuracy of the velocity of flow.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a current meter for water conservancy project survey, includes the measuring staff, is equipped with velocity of flow sensor on the measuring staff, still including the counter that is used for calculating velocity of flow sensor survey data, fixedly connected with main baffle and inferior baffle on the measuring staff, main baffle and inferior baffle perpendicular to measuring staff, the cover has the rotating ring on the measuring staff, the rotating ring is located between main baffle and the inferior baffle, velocity of flow sensor rotates and connects on the rotating ring lateral wall, velocity of flow sensor's axis of rotation is perpendicular with the axis of rotation of rotating ring, velocity of flow sensor includes oar and fin, the oar is located velocity of flow sensor's one end, the fin is located velocity of flow sensor and keeps away from the other end of oar, the fin includes a plurality of oar pieces, the oar piece is parallel with the oar axis of rotation.

By adopting the technical scheme, the rotating ring is sleeved on the measuring rod to rotate, the rotating ring is connected with the flow velocity sensor in a rotating way in a matching way, the rotating axis of the flow velocity sensor is vertical to the rotating axis of the rotating ring, so that the flow velocity sensor can rotate around the axis of the measuring rod and can also rotate around the direction vertical to the axis of the measuring rod at the same time, the angle adjustment of the flow velocity sensor in any direction is realized, the tail wing on the flow velocity sensor is matched to generate acting force by the water flow impacting the tail wing, the flow velocity sensor is driven to generate angle change to be adjusted to be in a state with minimum resistance, at the moment, the resistance can be realized only when the water flow direction is parallel to the paddle, and the paddle is parallel to the rotating axis of the propeller, so that the water flow is also parallel to the rotating axis of the propeller, the rotating effect of the water flow driving the propeller is optimal, and, so that the accuracy of the detected data of the flow rate is higher.

Through the cooperation of main fender and secondary baffle, because the swivel becket is located between main baffle and the secondary baffle, accessible main fender and secondary baffle restriction swivel becket slide along measuring staff length direction, improve the stability of swivel becket, guarantee that the swivel becket rotates steadily and connects on the measuring staff, avoid velocity of flow sensor to break away from the measuring staff and lead to detecting the condition of inefficacy.

Through the setting of measuring staff, when the use of cooperation velocity of flow sensor and counter, when the water level is than the depths, can play the effect that supports velocity of flow sensor for the velocity of flow is more convenient.

The present invention may be further configured in a preferred embodiment as: the main baffle is sunken to have the main spout that is cyclic annular and head and the tail intercommunication on the face of inferior baffle, it has the inferior spout that is cyclic annular and head and the tail intercommunication to cave in on the face of inferior baffle towards main baffle, roll connection has the butt in a plurality of main balls of the tip that the swivel becket is close to main baffle in the main spout, roll connection has the butt in a plurality of times balls of another tip of swivel becket in the inferior spout, the cross section of main spout and inferior spout all is major arc form, the inner radius of the cross section of main spout is unanimous with the outer radius of main ball, the inner radius of the cross section of inferior spout is unanimous with the outer radius of inferior ball.

Through adopting above-mentioned technical scheme, through the setting of ball, make the friction between swivel becket and main baffle and the inferior baffle change rolling friction into from sliding friction, frictional force greatly reduces when making the swivel becket lie in the rotation between main baffle and the inferior baffle, improve swivel becket pivoted sensitivity, make flow velocity sensor also can drive the swivel becket rotation when the rivers are slower and result in the effort to the fin less, be favorable to making flow velocity sensor produce corresponding angular variation, guarantee rivers and the axis of rotation of propeller as far as possible parallel better, make the velocity of flow accuracy that records higher.

The present invention may be further configured in a preferred embodiment as: an inner sliding groove is sunken in the inner wall of the rotating ring, a plurality of inner balls are connected in the inner sliding groove in a rolling mode, the cross section of the inner sliding groove is in a major arc shape, and the inner radius of the cross section of the inner sliding groove is consistent with the outer radius of the inner balls.

Through adopting above-mentioned technical scheme, through the setting of interior ball, make the swivel becket rotate around the direction of perpendicular to gage rod length, the supplementary rotation of ball in the accessible, reduce the frictional force between swivel becket and the gage rod, make the swivel becket be located the reduction by a wide margin of frictional force when rotating between main baffle and the time baffle, make swivel becket pivoted sensitivity higher simultaneously, and then the resistance of velocity of flow sensor drive swivel becket when making the fin receive rivers drive passively reduces, and then guarantee that rivers are parallel as far as possible with the axis of rotation of oar soon better, the error when having reduced the measurement, the precision of the data of surveying has been improved.

The present invention may be further configured in a preferred embodiment as: the measuring pole includes the mobile jib and can dismantle the inferior pole of being connected with the mobile jib, main baffle fixed connection is close to inferior pole department at the mobile jib outer wall, inferior baffle fixed connection is close to the mobile jib department at inferior pole outer wall.

Through adopting above-mentioned technical scheme, be connected through dismantling between mobile jib and the time pole for can dismantle between main baffle and the time baffle, because the swivel becket lies in between main baffle and the time baffle, make all to dismantle between swivel becket and mobile jib and the time pole, be favorable to the vanning and the carrying of velocity of flow appearance.

The present invention may be further configured in a preferred embodiment as: the measuring rod comprises a plurality of scale rods.

Through adopting above-mentioned technical scheme, include a plurality of scale rods through the measuring staff, the water degree of depth that can detect as required earlier before the detection, connect a plurality of scale rods, make the length of measuring staff can reach the water position that needs the detection, thereby make the velocity sensor who connects on the measuring staff can reach the water level that will detect, through the relative position relation of scale and surface of water, the depth of water of observation velocity sensor position that can be clear, the degree of accuracy of measuring position has effectively been improved, make measured data more accurate.

The present invention may be further configured in a preferred embodiment as: and the measuring rod is sleeved with a scale indicating plate perpendicular to the axis direction of the measuring rod.

Through adopting above-mentioned technical scheme, set up through the scale indicator board, before the velocity of flow, the degree of depth that detects as required earlier, with the appointed scale department of scale indicator board cover at the measuring staff, then insert the current meter in order to examine time measuring, the accessible is observed the relative position relation of scale indicator board and the surface of water and is in predetermineeing the water depths in order to judge whether correctly being located of velocity sensor, it is more convenient when making the relative position who observes specific scale and surface of water, make the position when detecting more accurate, thereby improve the precision that records the velocity of flow.

The present invention may be further configured in a preferred embodiment as: the scale indicator board is a plastic board.

Through adopting above-mentioned technical scheme, be the setting of plastic slab through the scale indicator panel, when measuring, when the current meter is put into under water, the scale indicator panel of cover on the measuring staff has certain buoyancy for reduce the gravity of hand when handheld measuring staff measures, make things convenient for the detection achievement of current meter, thereby it is more convenient when making the detection, in order to improve work efficiency.

The present invention may be further configured in a preferred embodiment as: the scale indicator board includes the mainboard and can dismantle the subplate of being connected with the mainboard, fixedly connected with main lug and sunken have main shrinkage pool on the lateral wall that the mainboard is close to the subplate, the subplate is close to the vice lug of fixedly connected with and caves in on the lateral wall of mainboard and has vice shrinkage pool, main lug and vice lug are the block rubber, when mainboard and subplate concatenation are in order to form the scale indicator board, main lug is pegged graft in vice shrinkage pool and vice lug and is pegged graft in main shrinkage pool.

Through adopting above-mentioned technical scheme, because mainboard and subplate concatenation are the block rubber in order to form scale indicator board and main lug and vice lug for mainboard and subplate can closely splice, and make the scale indicator board can dismantle with the measuring staff, thereby make the degree of depth that the scale indicator board can be earlier as required install in corresponding scale department, the going on of convenient detection improves work efficiency.

The present invention may be further configured in a preferred embodiment as: the flow velocity sensor comprises a supporting rod, a rotating hole is formed in the supporting rod in a penetrating mode, a fixing column is fixedly connected to the outer side wall of the rotating ring, the rotating hole is sleeved on the fixing column, a fixing barrel sleeved on the fixing column is connected to the fixing column through threads, a limiting plate is fixedly connected to the end face, closed to the fixing barrel, of the fixing barrel, and the radius of the rotating hole is larger than the outer radius of the fixing barrel and smaller than the radius of the limiting plate.

Through adopting above-mentioned technical scheme, through changeing the pot head on the fixed column, the cooperation is fixed, and the pot head passes and changes the pot head on the fixed column for velocity of flow sensor and swivel becket can realize dismantling, because change the outside radius that the hole radius is greater than fixed, and just be less than the limiting plate radius, make the swivel becket can not the landing when rotating around the direction of perpendicular to measuring staff length, thereby make velocity of flow sensor can rotate in succession on the swivel becket, be favorable to the process of carrying on of detection, improved work efficiency.

The present invention may be further configured in a preferred embodiment as: the inner wall of the rotary hole is sunken with a rotary rolling groove, the cross section of the rotary rolling groove is in a major arc shape, a plurality of rotary balls are connected in the rotary rolling groove in a rolling manner, and the inner radius of the arc of the cross section of the rotary rolling groove is half the same as that of the rotary balls.

Through adopting above-mentioned technical scheme, through the setting of rotatory ball for velocity of flow sensor can reduce frictional force when rotating on the swivel becket, and increase of service life, the sensitivity of rotatory when having improved velocity of flow sensor simultaneously around the direction rotation of perpendicular to measuring staff axis, the automatically regulated self angle that velocity of flow sensor can be better when making the fin receive the rivers drive passively is to being on a parallel with the rivers direction as far as possible, with the precision of improvement measurement.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the rotating ring is sleeved on the measuring rod to rotate, and is matched with the flow velocity sensor to be connected to the rotating ring in a rotating mode, so that the angle of the flow velocity sensor in any direction is adjusted, and the tail wing arrangement on the flow velocity sensor is matched, so that the rotating effect of the water flow driving propeller is optimal, accurate detection data can be obtained more easily, and the accuracy of the detection data of the flow velocity is higher;

2. the friction among the rotating ring, the main baffle and the secondary baffle is greatly reduced through the arrangement of the balls, and the friction among the rotating ring, the measuring rod and the flow velocity sensor is greatly reduced through the arrangement of the inner balls and the rotating balls, so that the rotating sensitivity of the rotating ring is improved, the flow velocity sensor is favorable for generating corresponding angle change, the rotating axes of the water flow and the propeller are better ensured to be parallel as much as possible, and the measured flow velocity accuracy is higher;

3. the main baffle plate and the secondary baffle plate can be detached through the detachable connection between the main rod and the secondary rod, and the rotating ring is positioned between the main baffle plate and the secondary baffle plate, so that the rotating ring, the main rod and the secondary rod can be detached, and the flow velocity meter can be packed and carried conveniently;

4. through the matching of the scale rod and the scale indicating plate, the relative position of the specific scale and the water surface can be observed more conveniently, the position during detection is more accurate, and the accuracy of the measured flow speed is improved;

5. through the cooperation of the rotary hole sleeve and the fixed cylinder on the fixed column, the rotary ring can not slide out when rotating around the direction perpendicular to the length of the measuring rod, so that the flow velocity sensor can continuously rotate on the rotary ring, detection is facilitated, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic view of the whole structure of the current meter for measuring the middle water transportation engineering of the present invention;

fig. 2 is an exploded view of the present invention for illustrating the construction of the measuring rod;

FIG. 3 is a schematic structural view of the internal structure of the middle support rod of the present invention;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

FIG. 5 is an enlarged schematic view of section B of FIG. 3;

fig. 6 is a schematic structural diagram for illustrating an internal structure of the rotating ring according to the present invention.

In the figure, 1, a measuring rod; 11. a connecting rod; 112. a connecting rod column; 113. a wire guide post; 114. a wire pressing bolt; 115. a wire pressing screw hole; 116. a wire guide hole; 12. a graduated rod; 121. connecting holes; 122. connecting columns; 13. a main rod; 131. a main connecting column; 132. a main connecting hole; 133. a main baffle; 134. a main chute; 135. a main ball; 14. a secondary rod; 141. secondary connection holes; 142. secondary connecting columns; 143. a secondary baffle; 144. a secondary chute; 145. a secondary ball; 15. inserting a rod; 151. a jack; 2. a rotating ring; 21. a bump; 22. a limiting plate; 23. a fixed cylinder; 24. fixing a column; 251. an upper chute; 252. a lower chute; 253. an inner ball; 254. an inner rolling groove; 3. a flow rate sensor; 31. a strut; 311. connecting columns; 312. hole turning; 313. rotating the ball; 32. rotating a propeller; 321. a rotating rod; 322. a paddle; 33. A tail wing; 331. a balancing pole; 332. a paddle blade; 333. a connecting rod hole; 34. a wire rod post; 341. a wire pressing bolt; 342. a wire pressing hole; 343. a wire rod hole; 4. a wire; 5. a scale indicating plate; 51. a main board; 511. a main bump; 512. a primary recess; 52. a sub-board; 521. a sub-bump; 6. a counter.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a current meter for water transportation engineering measurement, including measuring staff 1, the cover has swivel 2 on the measuring staff 1, rotates on the swivel 2 and is connected with velocity sensor 3, and velocity sensor 3 rotates around the direction of perpendicular to measuring staff 1 length, and swivel 2 still includes to be connected in measuring staff 1 and velocity sensor 3 through wire 4 around the rotation of the direction that is on a parallel with measuring staff 1 length.

Referring to fig. 2, measuring staff 1 includes a plurality of scale bars 12, scale bar 12 is cylindrical rod shape, a plurality of scale marks have been seted up on the scale bar 12 along length direction, the one end fixedly connected with spliced pole 122 of scale bar 12, spliced pole 122 is cylindricly, the external screw thread has been seted up on spliced pole 122's the lateral wall, the other end that spliced pole 122 was kept away from to scale bar 12 is sunken to have connecting hole 121, connecting hole 121 is circular blind hole, the internal thread has been seted up on the inner wall of connecting hole 121, during the concatenation of adjacent scale bar 12, spliced pole 122 inserts in connecting hole 121 and through spliced pole 122 the external screw thread and the interior screw-thread fit.

Referring to fig. 2, the measuring rod 1 further includes a main rod 13 for connecting the rotating ring 2, a main baffle 133 of the main rod 13 is fixedly connected with, the main baffle 133 is sleeved on the main rod 13, the main baffle 133 is in a ring shape, the main baffle 133 is a metal plate, a main column 131 is connected to the main end of the main rod 13, the main column 131 is far away from the main end of the main column, the main column 132 is connected to the main end of the main rod 13, the main column 131 is provided with an external thread on the side wall, the main column 132 is provided with an internal thread on the inner wall, when the main rod 13 is connected with the scale rod 12, the connecting column 122 is located in the.

Referring to fig. 6, the main baffle 133 is close to the main connecting column 131, a main chute 134 is recessed on a circular ring surface of the main baffle 133 close to the main connecting column 131, the main chute 134 extends along the circumferential direction of the main baffle 133 and is communicated end to form a ring shape, the cross section of the main chute 134 is in a major arc shape, a plurality of main balls 135 are connected in the main chute 134 in a rolling manner, and the radius of the main balls 135 is consistent with the inner radius of the circular arc of the cross section of the main chute 134.

Referring to fig. 2, the measuring rod 1 further includes a secondary rod 14 for connecting the rotating ring 2, a secondary baffle 143 is fixedly connected to the secondary rod 14, the secondary baffle 143 is sleeved on the secondary rod 14, the secondary baffle 143 is in a circular ring shape, the secondary baffle 143 is a metal plate, a secondary connecting column 142 is fixedly connected to one end of the secondary rod 14, a secondary connecting hole 141 is formed in one end of the secondary rod 14 far away from the secondary connecting column 122 in a recessed mode, an external thread is formed in the side wall of the secondary connecting column 142, an internal thread is formed in the inner wall of the secondary connecting hole 141, when the primary rod 13 is connected with the secondary rod 14, the primary connecting column 131 is located in the secondary connecting hole 141.

Referring to fig. 6, the sub blocking plate 143 is close to the sub connection hole 141, a sub sliding groove 144 is recessed in an annular surface of the sub blocking plate 143 close to the sub connection hole 141, the sub sliding groove 144 extends in the circumferential direction of the sub blocking plate 143 and is communicated end to form a ring shape, the cross section of the sub sliding groove 144 is in a major arc shape, a plurality of sub balls 145 are connected in the sub sliding groove 144 in a rolling manner, and the radius of the sub balls 145 is consistent with the inner radius of an arc of the cross section of the sub sliding groove 144.

Referring to fig. 2, the measuring rod 1 further includes an insert rod 15 for being inserted underwater, the insert rod 15 is connected to the end of the secondary rod 14 far away from the main rod 13, a jack 151 is formed in the end, connected with the secondary rod 14, of the insert rod 15, an internal thread is arranged in the jack 151, when the insert rod 15 is connected with the secondary rod 14, the secondary connecting post 142 is inserted into the jack 151 and connected with a thread through a thread fit, the insert rod 15 includes an insert section, the insert section is far away from the secondary rod 14, the insert section is in a circular truncated cone shape, and the radius of the insert section is gradually reduced along the direction far away from the secondary rod 14.

Referring to fig. 2, the measuring rod 1 further comprises a connecting rod 11 for connecting a counter, the connecting rod 11 is connected to the end portion of the scale rod 12 far away from the inserting rod 15, and the connecting rod 11 and the rod column are located in the connecting hole 121 and are in threaded fit to achieve threaded connection.

Referring to fig. 2 and 5, one end fixedly connected with wire post 113 that connecting rod post 112 was kept away from to connecting rod 11, wire post 113 is the round platform form, wire post 113's radius reduces along the direction of keeping away from connecting rod 11 gradually, wire post 113 runs through wire guide 116 along the radius direction, wire guide 116 is close to wire post 113 bottom, wire guide 113 face depression of keeping away from connecting rod 11 has line ball screw 115, line ball screw 115 runs through to wire guide 116 and communicates with wire guide 116, be equipped with the internal thread on line ball screw 115 inner wall, line ball screw 115 internal thread is connected with line ball bolt 114, line ball bolt 114 inserts in line ball screw 115 and with threaded connection through screw-thread fit, line ball bolt 114's length is greater than line ball screw 115's degree of depth.

Referring to fig. 2, a scale indicating plate 5 is sleeved on a measuring rod 1, the scale indicating plate 5 is a plastic plate, the scale indicating plate 5 is circular, the scale indicating plate 5 comprises a main plate 51 and a secondary plate 52, the main plate 51 and the secondary plate 52 are both semicircular, the main plate 51 and the secondary plate 52 are spliced to form the scale indicating plate 5, when the main plate 51 is spliced with the secondary plate 52, a main bump 511 and a main concave hole 512 are fixedly connected to the side wall of the main plate 51 close to the secondary plate 52, the main bump 511 is cylindrical, the main concave hole 512 is a circular blind hole, the main bump 511 and the main concave hole 512 are respectively located at two sides of the center of the scale indicating plate 5, an auxiliary bump 521 and a secondary concave hole are fixedly connected to the side wall of the secondary plate 52 close to the main plate 51, the secondary bump 521 and the secondary concave hole are respectively located at two sides of the center of the scale indicating plate 5, when the main plate 51 is spliced with, the main bump 511 is inserted into the auxiliary concave hole, the auxiliary bump 521 is inserted into the main concave hole 512, the radius of the main bump 511 is 101% of the radius of the auxiliary concave hole, the main bump 511 is a rubber block, the radius of the auxiliary bump 521 is 101% of the radius of the main concave hole 512, and the auxiliary bump 521 is a rubber block. The inner diameter of the scale indicating plate 5 is consistent with the diameter of the measuring rod 1.

Referring to fig. 6, the rotating ring 2 is circular and annular, two inner rolling grooves 254 are uniformly recessed in the inner wall of the rotating ring 2, a plurality of inner balls 253 are connected in the inner rolling grooves 254 in a rolling manner, the inner rolling grooves 254 extend along the circumferential direction of the inner wall of the rotating ring 2 and are communicated end to form an annular shape, the cross section of the inner rolling grooves 254 is in a major arc shape, and the radius of the inner balls 253 is consistent with the inner radius of the arc of the cross section of the inner rolling grooves 254.

Referring to fig. 6, an upper sliding groove 251 is recessed in the end surface of the rotating ring 2 close to the main baffle 133, the upper sliding groove 251 extends along the circumferential direction of the ring surface of the rotating ring 2 and is communicated end to form a ring shape, a lower sliding groove 252 is recessed in the end surface of the rotating ring 2 close to the secondary baffle 143, the lower sliding groove 252 extends along the circumferential direction of the ring surface of the rotating ring 2 and is communicated end to form a ring shape, the cross sections of the upper sliding groove 251 and the lower sliding groove 252 form a minor arc shape, the inner radii of the upper sliding groove 251 and the lower sliding groove 252 are consistent, when the rotating ring 2 is spliced with the measuring rod 1, the main balls 135 roll in the upper sliding groove 251, the secondary balls 145 roll in the lower sliding groove 252, the radius of the main balls 135 is consistent with the inner radius of the arc of the cross section of the.

Referring to fig. 6, fixedly connected with fixed column 24 on the lateral wall of rotating ring 2, fixed column 24 is cylindricly, the external screw thread has been seted up on the lateral wall of fixed column 24, threaded connection has the fixed section of thick bamboo 23 of cover on fixed column 24 on the fixed column 24, fixed section of thick bamboo 23 is cylindricly, the internal thread has been seted up on the inner wall of fixed section of thick bamboo 23, fixedly connected with limiting plate 22 on the fixed section of thick bamboo 23 confined terminal surface, limiting plate 22 is the plectane, limiting plate 22 is located outside fixed section of thick bamboo 23, fixedly connected with lug 21 on the face that fixed section of thick bamboo 23 was kept away from to limiting plate 22, lug 21.

Referring to fig. 3 and 4, the flow velocity sensor 3 includes a supporting rod 31, the supporting rod 31 is cylindrical, a device hole is recessed in one end of the supporting rod 31, the device hole is a circular blind hole, the length of the device hole is one third of the length of the supporting rod 31, a sensor element and a circuit element are disposed in the device hole, two thirds of the supporting rod 31 away from the propeller 32 along the length direction are provided with rotating holes 312, the rotating holes 312 are circular through holes, the radius of the rotating holes 312 is larger than the outer radius of the fixed cylinder 23 and smaller than the radius of the limiting plate 22, when the fixed cylinder 23 and the fixed cylinder 24 are connected to the limit position by screw threads, the distance between the plate surface of the limiting plate 22 facing the fixed cylinder 23 and the outer wall of the rotating ring 2 is larger than the diameter of the supporting rod 31, a rotating groove is recessed in the inner wall of the rotating holes 312, the rotating groove extends along the circumferential direction of the inner wall and is communicated end, the radius of the rolling ball 313 coincides with the inner radius of the circular arc of the cross section of the rolling groove.

Referring to fig. 3, a connection column 311 is fixedly connected to one end of the support rod 31 far from the device hole, the connection column 311 is cylindrical, an axis of the connection column 311 is collinear with an axis of the support rod 31, and an external thread is formed on a side wall of the connection column 311.

Referring to fig. 3 and 4, a wire pole 34 is fixedly connected to the support rod 31, the wire pole 34 is fixedly connected to one third of the support rod 31 close to one end of the device hole, the wire pole 34 is in a circular truncated cone shape, the radius of the wire pole 34 is gradually reduced along the direction far away from the support rod 31, a wire pole hole 343 penetrates through the side wall of the circular truncated cone, the wire pole hole 343 is close to the bottom of the wire pole 34, a wire pressing hole 342 is recessed in the surface of the wire pole 34 far away from the support rod 31, the wire pressing hole 342 penetrates through the wire pole hole 343, an internal thread is arranged on the inner wall of the wire pressing hole 342, a wire pressing bolt 341 is connected to the internal thread of the wire pressing hole 342, the wire pressing bolt 341 is inserted into the wire pressing hole 342 and is in threaded connection.

Referring to fig. 3, flow sensor 3 still includes oar 32, oar 32 includes bull stick 321, fixedly connected with oar 32 leaves on the bull stick 321 outer wall, oar 32 leaves are the heliciform, oar 32 leaves are the plastic slab, bull stick 321 one end fixedly connected with swing rod, the axis and the bull stick 321 axis collineation of swing rod, swing rod insertion device downthehole rotation, the one end fixedly connected with oar 32 head of swing rod is kept away from to the bull stick 321, oar 32 head is the round platform form soon, the radius of oar 32 head reduces along keeping away from oar 32 leaf direction of rotation gradually soon.

Referring to fig. 3, the flow sensor 3 further includes a tail 33, the tail 33 includes a balance bar 331 and a paddle 332, a link hole 333 is recessed at an end of the balance bar 331 near the strut 31, an internal thread is provided in the link hole 333, and when the strut 31 is connected to the tail 33, the link rod is inserted into the link hole 333 and is threadedly coupled thereto by a threaded fit.

Referring to fig. 3, the paddle 332 is in the shape of a parallelogram plate, the paddle 332 is a rigid plastic plate, the paddle 332 is four in number and is uniformly distributed on the balance bar 331 along the circumferential direction, and the paddle 332 is fixedly connected to the balance bar 331.

Referring to fig. 3 and 5, the counter 6 is electrically connected to two wires, one of the two wires is electrically connected to the wire post 113 through the wire pressing bolt 114, and the other wire is electrically connected to the wire post 34 through the wire pressing bolt 341, so as to electrically connect to the flow velocity sensor 3 for counting.

The implementation principle of the embodiment is as follows:

when the flow rate is required to be measured, firstly, the measuring rod 1 serving as a supporting function is assembled, firstly, the water depth is detected as required, a plurality of scale rods 12 are connected, then, the connecting rod 11 is in threaded connection with the scale rod 12 with the largest scale, then, the scale rod 12 is in threaded connection with the main rod 13, then, the rotating ring 2 is sleeved on the secondary rod 14, the balls in the lower sliding groove 252 of the rotating ring 2 are abutted to the secondary sliding groove 144 on the secondary baffle 143, the sliding down is prevented through the action of the secondary baffle 143, then, the main rod 13 penetrates through the rotating ring 2 and is in threaded connection with the secondary rod 14, the main rod 13 moves downwards to enable the main rod 13 to be abutted to the secondary rod 14, the balls in the main sliding groove 134 downwards move to be abutted to the upper sliding groove 251, and through the main balls 135 and the secondary balls 145, the rotating ring 2 can slide between the main baffle 133 and the secondary baffle 143 along the.

Then assemble as the velocity of flow sensor 3 of detection effect, at first branch 31 and fin 33 threaded connection, then overlap the commentaries on classics hole 312 of velocity of flow sensor 3 on fixed column 24, then insert fixed cylinder 23 in commentaries on classics hole 312 and with fixed column 24 threaded connection, screw up fixed cylinder 23, because limiting plate 22 leaves the clearance with the branch 31 outer wall, guaranteed that velocity of flow sensor 3 can rotate on fixed column 24.

Examine time measuring, insert the current meter in the water and make the surface of water be located the corresponding scale department of predetermined height, detect, when rivers are used on velocity sensor 3, oar 32 is under rivers drive power effect, produce certain angular velocity, make oar 32 produce rotary motion, the swing arm part synchronous revolution of the inside rotary part of drive bull stick 321, produce break-make signal through installing sensing element and the circuit element on the swing arm, break-make signal passes through circuit element and produces the signal of telecommunication, the signal of telecommunication passes through the wire post 113 on branch 31 and passes out the leading wire, the signal of telecommunication forms closed circuit through the wire on wire 4 and the connecting rod 11, the signal of telecommunication passes through the measurement in order to realize the velocity of water in wire 4 transmits counter 6, function such as demonstration reading.

When the rivers direction changes, rivers can strike fin 33, make fin 33 atress and produce great resistance, thereby make velocity of flow sensor 3 have the motion trend that tends to reduce the resistance, again because velocity of flow sensor 3 rotates and connects on swivel ring 2, velocity of flow sensor 3 rotates around the direction of perpendicular to measuring staff 1 length, can also wind the rotation of the direction that is on a parallel with measuring staff 1 length, make velocity of flow sensor 3 through the rotation of two directions in order to adjust self angle to be on a parallel with the rivers direction as far as possible, thereby make rivers impact paddle 322 in order to drive the rotatory effect of paddle 322 best, and then make detection effect more accurate, reduce the error, in order to improve measuring precision.

After each detection use, clean soft cloth is used for wiping out water drops, dirt and the like remained on the surface of the flow velocity meter, then the measuring rod 1, the flow velocity sensor 3 and the counter 6 are disassembled, and all the parts are assembled back into the instrument box.

Through the setting of interior ball 253 for swivel ring 2 can reduce frictional resistance when rotatory on measuring staff 1, makes swivel ring 2's rotation more sensitive, thereby the improvement of accuracy when making the measurement, thereby reduces the wearing and tearing of measuring staff 1 and swivel ring 2, increase of service life.

Through the arrangement of the device hole, the rotating rod can rotate inside the flow rate sensor 3, and is prevented from contacting with water, so that the device can normally operate and protect a sensor element and a circuit element.

By means of the arrangement of the conductor bar 34, an electrical signal generated by the on-off signal via the circuit element can be transmitted from the conductor bar 34 to the conductor 4 and thus to the counter 6.

The propeller 32 is driven by the water flow to rotate around the horizontal supporting shaft strut 31 through the spiral arrangement of the paddle 322 for passively sensing the water flow.

The radius of the rotary hole 312 is smaller than the inner radius of the fixed cylinder 23, so that the fixed column 24 can be inserted into the rotary hole 312, and the flow rate sensor 3 is connected to the rotary ring 2.

By the arrangement of the rotating balls 313, frictional resistance is reduced when the flow rate sensor 3 rotates on the rotating ring 2, thereby reducing wear of the flow rate sensor 3.

The flow sensor 3 is detachable by the screw connection of the fixed cylinder 23 and the fixed column 24.

Through the setting that the radius of rotating hole 312 is less than the radius of limiting plate 22, make the rotary ring 2 assemble on fixed column 24 and can not slide off, thereby make flow sensor 3 can rotate on rotary ring 2 in succession.

Through the setting of adjacent scale rod 12 screw thread for scale rod 12 can be dismantled, thereby makes things convenient for carrying and the transportation of velocity of flow appearance.

By providing the tail 33 with four blades 332 uniformly distributed, drag can be generated in multiple directions by the tail 33, thereby balancing the flow sensor 3 in multiple directions.

The tail 33 is detachable and selectively assembled by the screw arrangement of the post 311 and the link hole 333, thereby facilitating the packing and carrying of the flow sensor 3.

Through the arrangement of the insertion section of the insertion rod 15, the resistance of the measuring rod 1 is reduced when the measuring rod is inserted underwater, and the measuring rod is easier to insert.

Through the setting of scale indicator panel 5 for can observe the inserted position when the distance that slightly is far away during the measurement, thereby have the effect of magnifying the scale, conveniently observe.

The outer diameter of the plastic plate is large through the scale indicating plate 5, so that the scale indicating plate 5 can generate certain buoyancy on the water surface, the gravity of a hand is reduced when the handheld measuring rod 1 is used for measuring, the detection work of the current meter is facilitated, and the main bump 511 and the auxiliary bump 521 are rubber blocks, so that the main board 51 and the auxiliary board 52 can be spliced tightly.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The utility model provides a water conservancy project is anemograph for measurement, includes measuring staff (1), is equipped with velocity of flow sensor (3) on measuring staff (1), still including counter (6) that are used for calculating velocity of flow sensor (3) survey data, its characterized in that: the measuring rod (1) is fixedly connected with a main baffle (133) and an auxiliary baffle (143), the main baffle (133) and the secondary baffle (143) are perpendicular to the measuring rod (1), the measuring rod (1) is sleeved with a rotating ring (2), the rotating ring (2) is positioned between the main baffle (133) and the secondary baffle (143), the flow velocity sensor (3) is rotationally connected to the outer side wall of the rotating ring (2), the rotation axis of the flow velocity sensor (3) is vertical to the rotation axis of the rotating ring (2), the flow velocity sensor (3) comprises a propeller (32) and a tail wing (33), the propeller (32) is positioned at one end of the flow velocity sensor (3), the tail wing (33) is positioned at the other end of the flow velocity sensor (3) far away from the propeller (32), the tail (33) includes a plurality of blades (332), the blades (332) being parallel to the axis of rotation of the propeller (32).

2. The current meter for water conservancy project survey according to claim 1, characterized in that: main baffle (133) are sunken to have main spout (134) that are cyclic annular and end to end intercommunication on the face of baffle (143) is once again followed closely to baffle (143), it has time spout (144) that are cyclic annular and end to end intercommunication to subside on the face of baffle (133) is once again followed closely to baffle (143) once to time baffle (143), roll in main spout (134) and be connected with the butt in a plurality of main ball (135) of the tip that rotate ring (2) are close to time baffle (143), the cross section of main spout (134) and time spout (144) all is major arc form, the inner radius of the cross section of main spout (134) is unanimous with the outer radius of main ball (135), the inner radius of the cross section of time spout (144) is unanimous with the outer radius of time ball (145).

3. The current meter for water conservancy project survey according to claim 2, characterized in that: an inner rolling groove (254) is formed in the inner wall of the rotating ring (2) in a concave mode, a plurality of inner rolling balls (253) are connected in the inner rolling groove (254) in a rolling mode, the cross section of the inner rolling groove (254) is in an optimal arc shape, and the inner radius of the cross section of the inner rolling groove (254) is identical to the outer radius of the inner rolling balls (253).

4. The current meter for water conservancy project survey according to claim 1, characterized in that: the measuring rod (1) comprises a main rod (13) and an auxiliary rod (14) detachably connected with the main rod (13), the main baffle (133) is fixedly connected to the position, close to the auxiliary rod (14), of the outer wall of the main rod (13), and the auxiliary baffle (143) is fixedly connected to the position, close to the main rod (13), of the outer wall of the auxiliary rod (14).

5. The current meter for water conservancy project survey according to claim 1, characterized in that: the measuring rod (1) comprises a plurality of scale rods (12).

6. The flowmeter for water conservancy project survey according to claim 5, characterized in that: the measuring rod (1) is sleeved with a scale indicating plate (5) perpendicular to the axis direction of the measuring rod (1).

7. The flowmeter for water conservancy project engineering survey of claim 6, characterized in that: the scale indicating plate (5) is a plastic plate.

8. The flowmeter for water conservancy project engineering survey of claim 7, characterized in that: mainboard (51) that scale indicator board (5) include and subplate (52) of can dismantling the connection with mainboard (51), mainboard (51) are close to on the lateral wall of subplate (52) fixedly connected with main lug (511) and sunken have main shrinkage pool (512), the subplate (52) are close to on the lateral wall of mainboard (51) the vice lug of fixedly connected with (521) and sunken have vice shrinkage pool, main lug (511) and vice lug (521) are the rubber block, when mainboard (51) and subplate (52) splice in order to form scale indicator board (5), main lug (511) are pegged graft in vice shrinkage pool and vice lug (521) and are pegged graft in main shrinkage pool (512).

9. The current meter for water conservancy project survey according to claim 1, characterized in that: flow velocity transducer (3) include branch (31), it changes hole (312) to run through being provided with on branch (31), fixedly connected with fixed column (24) on the lateral wall of swivel becket (2), it overlaps on fixed column (24) to change hole (312), threaded connection has fixed section of thick bamboo (23) of cover on fixed column (24), fixedly connected with limiting plate (22) on fixed section of thick bamboo (23) confined terminal surface, the radius of changeing hole (312) is greater than the external radius of fixed section of thick bamboo (23) and is less than the radius of limiting plate (22).

10. The current meter for water conservancy project survey according to claim 9, characterized in that: the inner wall of the rotating hole (312) is sunken with a rotating rolling groove, the cross section of the rotating rolling groove is in a major arc shape, and a plurality of rotating balls (313) are connected in the rotating rolling groove in a rolling manner, so that the inner radius of the arc of the cross section of the rotating rolling groove is consistent with the radius of the rotating balls (313).

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