Immersed Self-Floating River Flow Detection Device

Abstract

The present invention provides an immersion-type self-floating river flow detection device, and adjacent lifting sub-tubes are slidably and sealedly connected; an air supply mechanism is sealedly connected to the innermost lifting sub-tube, and the air supply mechanism is used to supply air to the lifting tube, so that the inner lifting sub-tube of the adjacent lifting sub-tubes extends outward from the outer lifting sub-tube, and the Doppler flowmeter is connected to the innermost lifting sub-tube; a locking mechanism is arranged between the air supply mechanism and the lifting tube, and when the locking mechanism is opened, the air supply mechanism supplies air into the lifting tube, a detection mechanism is arranged below the Doppler flowmeter, and the detection mechanism is connected to the innermost lifting tube, and the detection mechanism is connected to the locking mechanism. The present invention cooperates by arranging the lifting tube, the air supply mechanism, the detection mechanism and the locking mechanism, and when the air supply mechanism inflates the inside of the multi-layer air supply tube, the multi-layer air supply tube extends to drive the Doppler flowmeter to rise, thereby preventing the Doppler flowmeter from being buried by mud and sand, improving the accuracy of flow detection, and improving the service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of flow detection equipment, and more specifically, relates to an immersion-type self-floating river flow detection device. Background Art

[0002] Doppler flowmeter is an instrument that uses the Doppler effect to measure fluid flow. It is widely used in industries, water conservancy, agricultural irrigation, etc., and is suitable for flow measurement of full pipes, partially full pipes, open channels, sewers, etc. It can be used to measure industrial water and sewage flow, as well as flow measurement of rivers, channels, sewers, pipelines, etc. In the field of environmental protection, Doppler ultrasonic flowmeters can monitor the flow and velocity of fluids in real time, providing accurate data support for environmental protection departments.

[0003] When in use, the Doppler flowmeter needs to be immersed in the liquid to be measured. Therefore, when testing open channels, rivers, etc., it is often fixed to the bottom of the channel or the river. However, sediment or silt and other materials that come with the water flow may cover or bury the Doppler flowmeter over time, resulting in inaccurate test data, or even damage to the Doppler flowmeter. Summary of the invention

[0004] The object of the present invention is to provide a submersible self-floating river flow detection device to prevent the flow detector from being buried by sediment and improve the accuracy of flow detection.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an immersible self-floating river flow detection device, including a lifting cylinder, an air supply mechanism, a Doppler flowmeter, a locking mechanism and a detection mechanism, wherein the lifting cylinder includes a plurality of lifting sub-cylinders which are nested with each other, and between adjacent lifting sub-cylinders, a part of the lifting sub-cylinder arranged on the inner side is inserted into the lifting sub-cylinder on the outer side, and the adjacent lifting sub-cylinders are slidably and sealedly connected; the air supply mechanism is sealedly connected to the innermost layer of the lifting sub-cylinders, and the air supply mechanism is used to supply air to the lifting cylinder so that the inner lifting sub-cylinders of the adjacent lifting sub-cylinders are locked. The lifting sub-cylinder extends outward to the outside; the Doppler flowmeter is connected to the innermost lifting sub-cylinder; the locking mechanism is arranged between the air supply mechanism and the lifting cylinder, when the locking mechanism is opened, the air supply mechanism supplies air into the lifting cylinder; when the locking mechanism is locked, the air supply mechanism stops supplying air to the lifting cylinder; the detection mechanism is arranged below the Doppler flowmeter, and the detection mechanism is connected to the innermost lifting sub-cylinder, the detection mechanism is connected to the locking mechanism, when the detection mechanism is buried by mud and sand, the locking mechanism is opened; when the detection mechanism is no longer buried by mud and sand, the locking mechanism is locked.

[0006] In a possible implementation, the lifting sub-cylinder includes a first lifting sub-cylinder, a second lifting sub-cylinder and a third lifting sub-cylinder, wherein the first lifting sub-cylinder is arranged at the outermost layer, a first retaining ring is arranged at the top of the first lifting sub-cylinder, and the inner diameter of the first retaining ring is smaller than the inner diameter of the first lifting sub-cylinder; the second lifting sub-cylinder is partially inserted into the first lifting sub-cylinder, the outer diameter of the second lifting sub-cylinder is the same as the inner diameter of the first retaining ring, a second retaining ring is arranged at the top of the second lifting sub-cylinder, the inner diameter of the second retaining ring is smaller than the inner diameter of the second lifting sub-cylinder, and the bottom of the second lifting sub-cylinder A first limiting ring is provided, the outer diameter of the first limiting ring is the same as the inner diameter of the first lifting sub-cylinder, a first sealing ring is provided on the outer wall of the first limiting ring, and a second sealing ring is provided on the top of the first limiting ring; a third lifting sub-cylinder is partially inserted into the second lifting sub-cylinder, the outer diameter of the third lifting sub-cylinder is the same as the inner diameter of the second baffle ring, a second limiting ring is provided at the bottom of the third lifting sub-cylinder, the outer diameter of the second limiting ring is the same as the inner diameter of the second lifting sub-cylinder, a third sealing ring is provided on the outer wall of the second limiting ring, and a fourth sealing ring is provided on the top of the second limiting ring.

[0007] In a possible implementation, a first limiting hole is provided on the first limiting ring, the first limiting hole is L-shaped, including a first vertical hole extending along the axial direction of the first limiting ring and a first transverse hole extending along the radial direction of the first limiting ring and connected to each other, a first piston is slidably provided in the first vertical hole, a first spring is provided between the bottom of the first piston and the bottom of the first vertical hole, a part of the first piston extends out of the first vertical hole when the first spring is in a natural state, a second piston is slidably provided in the first transverse hole, a first rack is connected to one side of the second piston, and hydraulic oil is provided in the first limiting hole between the first piston and the second piston; a second transverse hole is provided on one side of the first transverse hole, a third transverse hole is provided on the second limiting ring, when the first limiting ring is flush with the second limiting ring, the third transverse hole is communicated with the second transverse hole, a part of the second rack is provided in the third transverse hole, a part of the second rack is provided in the second transverse hole, a first gear is provided in mesh with the first rack and the second rack, and the second rack can be completely received in the second transverse hole due to sliding.

[0008] In a possible implementation, a fixed cone is provided at the bottom of the first lifting cylinder, and a plurality of fixed barbs are provided on the side wall of the fixed cone. The fixed barbs are plate-shaped and are arranged tilted from high to low from one end away from the axis of the fixed cone to one end close to the axis of the fixed cone.

[0009] In one possible implementation, the air supply mechanism includes a sealing ring, a connecting pipe and a gas supply bottle, wherein the sealing ring is arranged at the top of the third lifting cylinder; the connecting pipe is arranged at the top of the sealing ring, and the top of the connecting pipe is provided with a threaded section; high-pressure air is provided inside the gas storage bottle, and the gas outlet end of the gas storage bottle is provided with an outlet pipe, the outlet pipe is a threaded pipe, the outlet pipe is threaded in the threaded section, and a valve is provided on the outlet pipe, when the valve is opened, the gas storage bottle is exhausted through the outlet pipe; when the valve is closed, the gas storage bottle stops exhausting through the outlet pipe.

[0010] In a possible implementation, the detection mechanism includes a first detection component and a second detection component, and the first detection component is arranged below the second detection component; the locking mechanism includes a first locking component and a second locking component, and the first locking component and the second locking component are both arranged on the connecting pipe, and the first locking component is arranged below the second locking component, the first locking component is connected to the first detection component, when the first detection component is buried by mud and sand, the first locking component is unlocked, and when the first detection component is no longer buried by mud and sand, the first locking component is locked; the second detection component is connected to the second locking component, and the second detection component is connected to the Doppler flowmeter, when the Doppler flowmeter is impacted by water flow, the second locking component is unlocked; when the Doppler flowmeter is no longer impacted by water flow, the second locking component is locked.

[0011] In a possible implementation, the connecting tube comprises an upper connecting tube, a middle connecting tube and a lower connecting tube which are arranged in sequence from top to bottom, the threaded section is arranged on the upper connecting tube, the lower connecting tube is connected to the sealing ring, the bottom of the upper connecting tube is spaced apart from the top of the middle connecting tube, and the top of the lower connecting tube is spaced apart from the bottom of the middle connecting tube, a first connecting groove is provided on the side wall of the upper connecting tube, a second connecting groove and a third connecting groove are provided on the side wall of the middle connecting tube, and a fourth connecting groove is provided on the side wall of the lower connecting tube; a first connecting ring is sleeved on the outer walls of the upper connecting tube and the middle connecting tube, a first fixing ring and a second fixing ring are spaced apart on the inner wall of the first connecting ring, the first fixing ring is inserted in the first connecting groove, and the second fixing ring is inserted in the second connecting groove; a second connecting ring is sleeved on the outer walls of the lower connecting tube and the middle connecting tube, a third fixing ring and a fourth fixing ring are spaced apart on the inner wall of the second connecting ring, the third fixing ring is inserted in the third connecting groove, and the first fixing ring is inserted in the second connecting groove. The fourth fixing ring is inserted in the fourth connecting groove; the first locking assembly includes a first locking plate, the first locking plate is provided with a first through hole, the first locking plate is slidably arranged between the connecting lower tube and the connecting middle tube, and the thickness of the first locking plate is the same as the distance between the connecting lower tube and the connecting middle tube, the first locking plate can make the inner holes of the connecting lower tube and the connecting middle tube communicate through the first through hole due to sliding, and the first locking plate can cut off the inner holes of the connecting middle tube and the connecting lower tube due to sliding; the second locking assembly includes a second locking plate, the second locking plate is provided with a second through hole, the second locking plate is slidably arranged between the connecting upper tube and the connecting middle tube, and the thickness of the second locking plate is the same as the distance between the connecting upper tube and the connecting middle tube, the second locking plate can make the inner holes of the connecting upper tube and the connecting middle tube communicate through the second through hole due to sliding, and the second locking plate can cut off the inner holes of the connecting middle tube and the connecting upper tube due to sliding.

[0012] In a possible implementation, the first detection assembly includes a first sliding groove, a first conducting tube, a first detection groove, a second detection groove, a first detection rod and a first driving rod, wherein the first sliding groove is arranged on the top surface of the connecting lower tube; the first conducting tube is arranged on the lower end surface of the first locking plate, the first conducting tube is communicated with the first through hole, the first conducting tube is arranged in the first sliding groove, and a plurality of second springs are arranged between the outer wall of the first conducting tube and the side wall of the first sliding groove, and when each of the second springs is in a natural state, the inner holes of the connecting lower tube and the connecting middle tube are communicated through the first through hole and the conducting tube; the first detection groove is arranged on the first connecting ring, and the first detection groove extends along the radial direction of the first connecting ring; the second detection groove is arranged in the The first detection groove is on the first connecting ring, and the second detection groove extends radially along the first connecting ring, the second detection groove is communicated with the first detection groove, and the second detection groove is connected with the gap between the connecting lower tube and the connecting middle tube, the outer end of the first detection groove is connected with the external space of the first connecting ring, and the cross-sectional area of ​​the first detection groove is larger than the cross-sectional area of ​​the second detection groove; the first detection rod is slidably arranged in the first detection groove, and a part of the first detection rod is arranged outside the first detection groove, and one end of the first detection rod is spaced apart from the second detection groove; the first driving rod is slidably arranged in the second detection groove, and a part of the first driving rod is arranged outside the second detection groove, and hydraulic oil is filled between the first detection rod and the first driving rod.

[0013] In a possible implementation, the second detection component includes a second sliding groove, a second conduction tube, a third detection groove, a fourth detection groove, a second detection rod, a second driving rod, and a guide rail. Among them, the second sliding groove is provided on the top surface of the connecting middle tube; the second conduction tube is provided on the lower end surface of the second locking plate. The second conduction tube communicates with the second through hole. The second conduction tube is arranged in the second sliding groove. A third spring is provided on the outer wall of the second conduction tube, and the other end of the third spring abuts against the side wall of the second sliding groove. When the third spring is in a natural state, the inner holes of the connecting upper tube and the connecting middle tube are truncated by the second locking plate, and under the action of an external force, the inner holes of the connecting upper tube and the connecting middle tube can be conducted through the second conduction tube; the third detection groove is provided on the second connecting ring, and the third detection groove extends along the radial direction of the second connecting ring; the fourth detection groove is provided on the second connecting ring, and the fourth detection groove extends along the radial direction of the second connecting ring. The third detection groove communicates with the fourth detection groove, and the fourth detection groove communicates with the gap between the connecting upper tube and the connecting middle tube. The outer end of the third detection groove communicates with the external space of the second connecting ring. The cross-sectional area of the third detection groove is larger than that of the fourth detection groove; the second detection rod slides in the third detection groove, and a part of the second detection rod is arranged outside the third detection groove, and one end of the second detection rod is arranged at an interval from the fourth detection groove; the second driving rod slides in the second detection groove, and the other end of the second driving rod is connected to the second locking plate. Hydraulic oil is filled between the second detection rod and the second driving rod; the guide rail is provided on the connecting upper tube. The Doppler flowmeter slides on the guide rail, and a third detection rod is provided at the bottom of the Doppler flowmeter, and the third detection rod abuts against the second driving rod.

[0014] In a possible implementation, a "C"-shaped connecting rod is provided between the first connecting ring and the second connecting ring. An installation rod arranged perpendicular to the axial direction of the connecting tube is provided on the connecting rod, and the installation rod is arranged parallel to the guide rail. A tail plate is provided at the rear end of the installation rod. The tail plate is arranged vertically and is parallel to the guide rail; the extending directions of the first detection groove and the third detection groove are parallel to the guide rail, and the opening ends of the first detection groove and the third detection groove face the opposite direction of the extending direction of the tail plate.

[0015] The beneficial effect of the submerged self-floating river flow detection device provided by the present invention is that: compared with the prior art, the present invention cooperates with a lifting cylinder and an air supply mechanism, and when the air supply mechanism inflates the inside of the multi-layer air supply cylinder, the multi-layer air supply cylinder extends to drive the Doppler flowmeter to rise, and by providing a detection mechanism and a locking mechanism, the detection mechanism is arranged below the Doppler flowmeter, and when the detection mechanism is buried by mud and sand, the locking mechanism is opened to realize the air supply of the air supply mechanism, and the lifting cylinder is extended, so that the height of the mud and sand will not exceed the detection mechanism, thereby preventing the Doppler flowmeter from being buried by mud and sand, improving the accuracy of flow detection, and increasing the service life of the Doppler detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of the submersible self-floating river flow detection device provided by an embodiment of the present invention during operation;

[0018] Figure 2 A cross-sectional view of the working state of the submersible self-floating river flow detection device provided by an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A magnified view of part A;

[0020] Figure 4 for Figure 2 A magnified view of part B;

[0021] Figure 5 A schematic diagram of the structure of the submersible self-floating river flow detection device provided by an embodiment of the present invention when the lifting cylinder rises to the highest point;

[0022] Figure 6 A cross-sectional view of the lifting cylinder of the submersible self-floating river flow detection device provided by an embodiment of the present invention when it rises to the highest point;

[0023] Figure 7 for Figure 6 Enlarged view of part C.

[0024] Figure 8 for Figure 6 Enlarged view of part D.

[0025] Fig. 9 for Figure 6 Enlarged view of part E.

[0026] Among them, the reference numerals in the figures are as follows:

[0027] 1. Lifting cylinder; 2. Air supply mechanism; 3. Doppler flowmeter; 4. Locking mechanism; 5. Detection mechanism;

[0028] 101, first lifting cylinder; 102, first stop ring; 103, second lifting cylinder; 104, second stop ring; 105, first limiting ring; 106, first sealing ring; 107, second sealing ring; 108, third lifting cylinder; 109, second limiting ring; 110, third sealing ring; 111, fourth sealing ring; 112, first limiting hole; 113, first vertical hole; 114, first horizontal hole; 115, first spring; 116, first piston; 117, second piston; 118, first rack; 119, second horizontal hole; 120, first gear; 121, second rack; 122, third horizontal hole; 123, fixed cone; 124, fixed barb;

[0029] 201, sealing ring; 202, connecting pipe; 203, gas cylinder; 204, outlet pipe; 205, connecting upper pipe; 206, connecting middle pipe; 207, connecting lower pipe; 208, first connecting ring; 209, second connecting ring; 210, first fixing ring; 211, second fixing ring; 213, third fixing ring; 214, fourth fixing ring; 215, connecting rod; 216, mounting rod; 217, tail plate;

[0030] 401, first locking plate; 402, second locking plate; 403, first through hole; 404, second through hole;

[0031] 501, first detection component; 502, second detection component; 503, first sliding slot; 504, first conducting tube; 505, second spring; 506, first detection slot; 507, second detection slot; 508, first detection rod; 509, first driving rod; 510, second sliding slot; 511, second conducting tube; 512, third spring; 514, third detection slot; 515, fourth detection slot; 516, second detection rod; 517, second driving rod; 518, guide rail; 519, third detection rod. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0034] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] The directions or positional relationships indicated by terms such as “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0037] The submersible self-floating river flow detection device provided by the present invention is now described.

[0038] Please also read Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The invention discloses an immersion-type self-floating river flow detection device, comprising a lifting cylinder 1, an air supply mechanism 2, a Doppler flowmeter 3, a locking mechanism 4 and a detection mechanism 5, wherein the lifting cylinder 1 comprises a plurality of lifting sub-cylinders which are mutually sleeved, and between adjacent lifting sub-cylinders, a part of the inner lifting sub-cylinder is inserted into the outer lifting sub-cylinder, and the adjacent lifting sub-cylinders are slidably and sealedly connected; the air supply mechanism 2 is sealedly connected to the innermost lifting sub-cylinder, and the air supply mechanism 2 is used to supply air to the lifting cylinder, so that the inner lifting sub-cylinder among the adjacent lifting sub-cylinders moves toward the outer lifting sub-cylinder. The Doppler flowmeter 3 is connected to the innermost lifting cylinder; the locking mechanism 4 is arranged between the air supply mechanism 2 and the lifting cylinder. When the locking mechanism 4 is opened, the air supply mechanism 2 supplies air to the lifting cylinder; when the locking mechanism 4 is locked, the air supply mechanism 2 stops supplying air to the lifting cylinder; the detection mechanism 5 is arranged below the Doppler flowmeter 3, and the detection mechanism 5 is connected to the innermost lifting cylinder, and the detection mechanism 5 is connected to the locking mechanism 4. When the detection mechanism 5 is buried by mud and sand, the locking mechanism 4 is opened; when the detection mechanism 5 is no longer buried by mud and sand, the locking mechanism 4 is locked.

[0039] The beneficial effect of the submerged self-floating river flow detection device provided in the present embodiment is as follows: compared with the prior art, the submerged self-floating river flow detection device provided in the present embodiment cooperates by setting a lifting cylinder 1 and an air supply mechanism 2. When the air supply mechanism 2 inflates the inside of the multi-layer air supply cylinder, the multi-layer air supply cylinder extends to drive the Doppler flowmeter 3 to rise. By setting a detection mechanism 5 and a locking mechanism 4, the detection mechanism 5 is arranged below the Doppler flowmeter 3. When the detection mechanism 5 is buried by mud and sand, the locking mechanism 4 is opened to realize the air supply of the air supply mechanism 2 and the extension of the lifting cylinder 1, so that the height of the mud and sand will not exceed the detection mechanism 5, thereby preventing the Doppler flowmeter 3 from being buried by mud and sand, improving the accuracy of flow detection, and improving the service life of the Doppler detector.

[0040] In this embodiment, the lifting cylinder includes a first lifting cylinder 101, a second lifting cylinder 103 and a third lifting cylinder 108, wherein the first lifting cylinder 101 is arranged at the outermost layer, a first retaining ring 102 is arranged at the top of the first lifting cylinder 101, and the inner diameter of the first retaining ring 102 is smaller than the inner diameter of the first lifting cylinder 101. The second lifting cylinder 103 is partially inserted into the first lifting cylinder 101, the outer diameter of the second lifting cylinder 103 is the same as the inner diameter of the first retaining ring 102, a second retaining ring 104 is arranged at the top of the second lifting cylinder 103, and the inner diameter of the second retaining ring 104 is smaller than the inner diameter of the second lifting cylinder 103, a first limiting ring 105 is arranged at the bottom of the second lifting cylinder 103, the outer diameter of the first limiting ring 105 is the same as the inner diameter of the first lifting cylinder 101, and a first sealing ring 106 is arranged on the outer wall of the first limiting ring 105, and a second sealing ring 107 is arranged at the top of the first limiting ring 105. The third lifting sub-cylinder 108 is partially inserted in the second lifting sub-cylinder 103, the outer diameter of the third lifting sub-cylinder 108 is the same as the inner diameter of the second baffle ring 104, a second limiting ring 109 is provided at the bottom of the third lifting sub-cylinder 108, the outer diameter of the second limiting ring 109 is the same as the inner diameter of the second lifting sub-cylinder 103, a third sealing ring 110 is provided on the outer wall of the second limiting ring 109, and a fourth sealing ring 111 is provided on the top of the second limiting ring 109.

[0041] In actual use, by inflating the lifting cylinder 1, the second lifting cylinder 103 will extend out of the first lifting cylinder 101, and the third lifting cylinder 108 will extend out of the second lifting cylinder 103, so as to increase the height of the Doppler flowmeter 3. Of course, when the height of the lifting cylinder 1 is increased, there is not only Figure 1 and Figure 4 The two states shown are Figure 4 The state shown is only when the third lifting cylinder 108 is raised to the highest point. There is also a state where the third lifting cylinder 108 is arranged in the second lifting cylinder 103, and a part of the second lifting cylinder 103 extends to the first lifting cylinder 101, and a state where the second lifting cylinder 103 is raised to the highest point, but the third lifting cylinder 108 is not raised to the highest point.

[0042] Here, the first stop ring 102 and the first limiting ring 105 are arranged so that when the second lifting cylinder 103 rises to the highest point, even if it is re-inflated, the second lifting cylinder 103 cannot be separated from the first lifting cylinder 101. Similarly, the second stop ring 104 and the second limiting ring 109 are arranged so that when the third lifting cylinder 108 rises to the highest point, the third lifting cylinder 108 will not be separated from the second lifting cylinder 103.

[0043] The first sealing ring 106 and the second sealing ring 107 are provided to seal the first lifting cylinder 101 and the second lifting cylinder 103. The third sealing ring 110 and the fourth sealing ring 111 are provided to seal the second lifting cylinder 103 and the third lifting cylinder 108.

[0044] As a preferred technical solution, a first limiting hole 112 is provided on the first limiting ring 105. The first limiting hole 112 is L-shaped, including a first vertical hole 113 extending along the axial direction of the first limiting ring 105 and a first transverse hole 114 extending along the radial direction of the first limiting ring 105, which are connected to each other. A first piston 116 is slidably provided in the first vertical hole 113, and a first spring 115 is provided between the bottom of the first piston 116 and the bottom of the first vertical hole 113. When the first spring 115 is in a natural state, a part of the first piston 116 extends out of the first vertical hole 113, and a second piston 117 is slidably provided in the first transverse hole 114. A first rack 118 is connected to one side of the second piston 117, and hydraulic oil is provided in the first limiting hole 112 between the first piston 116 and the second piston 117. A second transverse hole 119 is provided on one side of the first transverse hole 114, and a third transverse hole 122 is provided on the second limiting ring 109. When the first limiting ring 105 is flush with the second limiting ring 109, the third transverse hole 122 is connected to the second transverse hole 119, a part of the second rack 121 is provided in the third transverse hole 122, and a part of the second rack 121 is provided in the second transverse hole 119. A first gear 120 is meshed with the first rack 118 and the second rack 121, and the second rack 121 can be completely received in the second transverse hole 119 due to sliding.

[0045] In the initial state, part of the second rack 121 is disposed in the second transverse hole 119, and the other part of the second rack 121 is disposed in the third transverse hole 122, so that the third lifting cylinder 108 is relatively fixed to the second lifting cylinder 103. As the lifting cylinder 1 is inflated, the second lifting cylinder 103 rises to the highest point, the first stop ring 102 squeezes the first piston 116, the first piston 116 moves downward, drives the second piston 117 to move leftward, and drives the second rack 121 to slide into the second transverse hole 119, until the second rack 121 is completely received in the second transverse hole 119, at which time the third lifting cylinder 108 can rise relative to the second lifting cylinder 103, thereby achieving the purpose of the lifting cylinder 1 rising in sections, ensuring the sealing strength between the first lifting cylinder 101 and the second lifting cylinder 103, and at the same time ensuring the sealing strength between the third lifting cylinder 108 and the second lifting cylinder 103.

[0046] like Figure 1As shown, a fixing cone 123 is provided at the bottom of the first lifting cylinder 101, and a plurality of fixing barbs 124 are provided on the side wall of the fixing cone 123. The fixing barbs 124 are plate-shaped, and the fixing barbs 124 are arranged obliquely from high to low from one end away from the axis of the fixing cone 123 to one end close to the axis of the fixing cone 123. The arrangement of the fixing cone 123 and the fixing barbs 124 makes it easy to fix the lifting cylinder 1 at the bottom of a river or an open channel to prevent tipping.

[0047] In this embodiment, the gas supply mechanism 2 includes a sealing ring 201, a connecting pipe 202 and a gas supply bottle, wherein the sealing ring 201 is arranged at the top of the third lifting cylinder 108. The connecting pipe 202 is arranged at the top of the sealing ring 201, and a threaded section is arranged at the top of the connecting pipe 202. High-pressure air is arranged inside the gas storage bottle 203, and an outlet pipe 204 is arranged at the outlet end of the gas storage bottle 203. The outlet pipe 204 is a threaded pipe, and the outlet pipe 204 is screwed in the threaded section. A valve is arranged on the outlet pipe 204. When the valve is opened, the gas storage bottle 203 exhausts air through the outlet pipe 204. When the valve is closed, the gas storage bottle 203 stops exhausting air through the outlet pipe 204. The arrangement of the threaded section and the outlet pipe 204 allows the gas storage bottle 203 to be replaced. That is, after the submersible self-floating river flow detection device of the present invention is recovered, the lifting cylinder 1 is reset so that the tops of the first lifting cylinder 101, the second lifting cylinder 103 and the third lifting cylinder 108 are flush. At this time, under the action of the first spring 115, the first piston 116 is reset, and the second lifting cylinder 103 and the third lifting cylinder 108 are fixed to each other. A new gas supply bottle can be replaced and it can be used again.

[0048] As a preferred technical solution, a first guide block is provided on the inner wall of the first retaining ring 102, a first guide groove is provided on the outer wall of the second lifting cylinder 103, and the first guide block is inserted into the first guide groove. A second guide block is provided on the inner wall of the second retaining ring 104, a second guide groove is provided on the side wall of the third lifting cylinder 108, and the second guide block is inserted into the second guide groove. As described above, the first lifting cylinder 101, the second lifting cylinder 103 and the third lifting cylinder 108 of the lifting cylinder 1 will not have relative displacement in the circumferential direction, thereby facilitating the reset when recovered.

[0049] The detection mechanism 5 includes a first detection component 501 and a second detection component 502, and the first detection component 501 is arranged below the second detection component 502. The locking mechanism 4 includes a first locking component and a second locking component, and the first locking component and the second locking component are both arranged on the connecting pipe 202, and the first locking component is arranged below the second locking component. The first locking component is connected to the first detection component 501. When the first detection component 501 is buried by mud and sand, the first locking component is unlocked, and when the first detection component 501 is no longer buried by mud and sand, the first locking component is locked. The second detection component 502 is connected to the second locking component, and the second detection component 502 is connected to the Doppler flowmeter 3. When the Doppler flowmeter 3 is impacted by water flow, the second locking component is unlocked. When the Doppler flowmeter 3 is no longer impacted by water flow, the second locking component is locked.

[0050] As configured above, when the submersible self-floating river flow detection device of the present invention is not immersed in water for operation, the air supply mechanism 2 will not supply air to the multi-layer lifting pipes, thereby facilitating the use of the submersible self-floating river flow detection device of the present invention.

[0051] Specifically, the connecting pipe 202 includes an upper connecting pipe 205, a middle connecting pipe 206 and a lower connecting pipe 207 which are arranged in sequence from top to bottom, a threaded section is provided on the upper connecting pipe 205, the lower connecting pipe 207 is connected to the sealing ring 201, the bottom of the upper connecting pipe 205 is arranged at intervals with the top of the middle connecting pipe 206, and the top of the lower connecting pipe 207 is arranged at intervals with the bottom of the middle connecting pipe 206, a first connecting groove is provided on the side wall of the upper connecting pipe 205, a second connecting groove and a third connecting groove are provided on the side wall of the middle connecting pipe 206, and a fourth connecting groove is provided on the side wall of the lower connecting pipe 207. A first connecting ring 208 is sleeved on the outer wall of the upper connecting pipe 205 and the middle connecting pipe 206, a first fixing ring 210 and a second fixing ring 211 are arranged at intervals on the inner wall of the first connecting ring 208, the first fixing ring 210 is inserted in the first connecting groove, and the second fixing ring 211 is inserted in the second connecting groove. A second connecting ring 209 is sleeved on the outer wall of the connecting lower tube 207 and the connecting middle tube 206, and a third fixing ring 213 and a fourth fixing ring 214 are arranged on the inner wall of the second connecting ring 209 at intervals. The third fixing ring 213 is inserted into the third connecting groove, and the fourth fixing ring 214 is inserted into the fourth connecting groove. The first locking assembly includes a first locking plate 401, and the first locking plate 401 is provided with a first through hole 403. The first locking plate 401 is slidably arranged between the connecting lower tube 207 and the connecting middle tube 206, and the thickness of the first locking plate 401 is the same as the distance between the connecting lower tube 207 and the connecting middle tube 206. The first locking plate 401 can make the inner holes of the connecting lower tube 207 and the connecting middle tube 206 conduct through the first through hole 403 due to sliding, and the first locking plate 401 can cut off the inner holes of the connecting middle tube 206 and the connecting lower tube 207 due to sliding. The second locking assembly includes a second locking plate 402, which is provided with a second through hole 404. The second locking plate 402 is slidably arranged between the connected upper tube 205 and the connected middle tube 206, and the thickness of the second locking plate 402 is the same as the distance between the connected upper tube 205 and the connected middle tube 206. The second locking plate 402 can slide to make the inner holes of the connected upper tube 205 and the connected middle tube 206 connected through the second through hole 404, and the second locking plate 402 can slide to cut off the inner holes of the connected middle tube 206 and the connected upper tube 205.

[0052] The first connecting ring 208 and the second connecting ring 209 are arranged so that there are gaps between the connecting middle tube 206, the connecting upper tube 205 and the connecting lower tube 207. By adjusting the positions of the first locking plate 401 and the second locking plate 402, the locking mechanism 4 can be locked and unlocked.

[0053] In this embodiment, the first detection assembly 501 includes a first sliding groove 503, a first conducting tube 504, a first detection groove 506, a second detection groove 507, a first detection rod 508 and a first driving rod 509, wherein the first sliding groove 503 is arranged on the top surface of the lower tube 207. The first conducting tube 504 is arranged on the lower end surface of the first locking plate 401, the first conducting tube 504 is in communication with the first through hole 403, the first conducting tube 504 is arranged in the first sliding groove 503, a plurality of second springs 505 are arranged between the outer wall of the first conducting tube 504 and the side wall of the first sliding groove 503, and when each second spring 505 is in a natural state, the inner hole connecting the lower tube 207 and the middle tube 206 is in communication with the first through hole 403 and the conducting tube. The first detection groove 506 is arranged on the first connecting ring 208, and the first detection groove 506 extends along the radial direction of the first connecting ring 208. The second detection groove 507 is provided on the first connection ring 208, and the second detection groove 507 extends along the radial direction of the first connection ring 208, the second detection groove 507 is communicated with the first detection groove 506, and the second detection groove 507 is connected with the gap connecting the lower tube 207 and the middle tube 206, the outer end of the first detection groove 506 is connected with the external space of the first connection ring 208, and the cross-sectional area of ​​the first detection groove 506 is larger than the cross-sectional area of ​​the second detection groove 507. The first detection rod 508 is slidably provided in the first detection groove 506, and a part of the first detection rod 508 is provided outside the first detection groove 506, and one end of the first detection rod 508 is spaced from the second detection groove 507. The first driving rod 509 is slidably provided in the second detection groove 507, and a part of the first driving rod 509 is provided outside the second detection groove 507, and the first detection rod 508 and the first driving rod 509 are filled with hydraulic oil.

[0054] In actual use, the first detection rod 508 is set to face the water flow, and the water flow impacts the first detection rod 508, so that the first driving rod 509 pushes the first locking plate 401 to move eccentrically, thereby making the first conductive tube 504 not conductive with the inner hole connected to the lower tube 207. Once the first detection rod 508 is buried by mud and sand, the water flow will lose the impact on the first detection rod 508. At this time, under the action of the second spring 505, the first locking rod is reset, and the first detection rod 508 is also extended outward. At this time, the first conductive tube 504 is conductive with the inner hole connected to the lower tube 207. At this time, the first locking assembly is in an unlocked state. As long as the second unlocking assembly is unlocked at the same time, the inflation mechanism can be realized to inflate the multi-layer lifting tube, so that the first detection rod 508 rises until it is no longer buried by mud and sand, and the impact force of the water flow on the first detection rod 508 is restored, and the first locking assembly is locked again.

[0055] In addition, the second detection assembly 502 includes a second sliding groove 510, a second conducting tube 511, a third detection groove 514, a fourth detection groove 515, a second detection rod 516, a second driving rod 517 and a guide rail 518, wherein the second sliding groove 510 is arranged on the top surface of the connecting middle tube 206. The second conducting tube 511 is arranged on the lower end surface of the second locking plate 402, the second conducting tube 511 is connected with the second through hole 404, the second conducting tube 511 is arranged in the second sliding groove 510, and a third spring 512 is arranged on the outer wall of the second conducting tube 511, and the other end of the third spring 512 abuts against the side wall of the second sliding groove. When the third spring 512 is in a natural state, the inner hole connecting the upper tube 205 and the connecting middle tube 206 is cut off by the second locking plate 402, and under the action of external force, the inner hole connecting the upper tube 205 and the connecting middle tube 206 can be connected through the second conducting tube 511. The third detection groove 514 is provided on the second connection ring 209, and the third detection groove 514 extends along the radial direction of the second connection ring 209. The fourth detection groove 515 is provided on the second connection ring 209, and the fourth detection groove 515 extends along the radial direction of the second connection ring 209. The third detection groove 514 is connected to the fourth detection groove 515, and the fourth detection groove 515 is connected to the gap between the upper tube 205 and the middle tube 206. The outer end of the third detection groove 514 is connected to the external space of the second connection ring 209, and the cross-sectional area of ​​the third detection groove 514 is larger than the cross-sectional area of ​​the fourth detection groove 515. The second detection rod 516 is slidably provided in the third detection groove 514, and a part of the second detection rod 516 is provided outside the third detection groove 514, and one end of the second detection rod 516 is spaced apart from the fourth detection groove 515. The second driving rod 517 is slidably disposed in the second detection groove 507, and the other end of the second driving rod 517 is connected to the second locking plate 402, and hydraulic oil is filled between the second detection rod 516 and the second driving rod 517. The guide rail 518 is disposed on the connecting upper tube 205, the Doppler flowmeter 3 is slidably disposed on the guide rail 518, and a third detection rod 519 is disposed at the bottom of the Doppler flowmeter 3, and the third detection rod 519 abuts against the second driving rod 517.

[0056] During actual use, the water flow impacts the Doppler flowmeter 3, so that the third detection rod 519 pushes the second detection rod 516 to be inserted into the third detection slot 514, and then the second driving rod 517 pushes the second locking plate 402 to move. At this time, the third spring 512 is compressed, and the second conductive cylinder is connected to the inner hole of the connecting middle tube 206. At this time, when the first locking assembly is unlocked, air can be supplied. At the same time, when the submerged self-floating river flow detection device of the present invention is not put into water, the water flow will not impact the Doppler flowmeter 3, and the second unlocking assembly cannot be unlocked. Although the water flow does not impact the first detection rod 508 at this time, the first locking assembly is unlocked, and the air supply mechanism 2 will not supply air to the lifting cylinder 1.

[0057] Finally, a "C"-shaped connecting rod 215 is provided between the first connecting ring 208 and the second connecting ring 209. An installation rod 216 perpendicular to the axial direction of the connecting pipe 202 is provided on the connecting rod 215, and the installation rod 216 is arranged parallel to the guide rail 518. A tail plate 217 is provided at the rear end of the installation rod 216. The tail plate 217 is arranged vertically and is parallel to the guide rail. The extending directions of the first detection groove 506 and the third detection groove 514 are parallel to the guide rail, and the opening ends of the first detection groove 506 and the third detection groove 514 face the direction opposite to the extending direction of the tail plate 217. The setting of the two connecting rings enables the orientations of the Doppler flowmeter 3 and the first detection rod 508 to be changed. Combined with the setting of the two tail plates 217, the Doppler flowmeter 3 and the first detection rod 508 always face the water flow, facilitating the detection of the flow rate by the Doppler flowmeter 3.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A submersible self-floating river flow detection device, characterized in that: include: The lifting cylinder (1) comprises a plurality of lifting sub-cylinders which are sleeved on each other, wherein between adjacent lifting sub-cylinders, a part of the lifting sub-cylinder arranged on the inner side is inserted into the lifting sub-cylinder on the outer side, and the adjacent lifting sub-cylinders are slidably and sealedly connected; An air supply mechanism (2) is sealedly connected to the innermost lifting sub-tube, and the air supply mechanism (2) is used to supply air to the lifting sub-tube, so that the inner lifting sub-tube of the adjacent lifting sub-tubes extends outward from the outer lifting sub-tube; A Doppler flowmeter (3), connected to the innermost lifting cylinder; The locking mechanism (4) is arranged between the air supply mechanism (2) and the lifting cylinder. When the locking mechanism (4) is opened, the air supply mechanism (2) supplies air into the lifting cylinder. When the locking mechanism (4) is locked, the air supply mechanism (2) stops supplying air to the lifting cylinder. The detection mechanism (5) is arranged below the Doppler flowmeter (3), and the detection mechanism (5) is connected to the innermost lifting sub-cylinder. The detection mechanism (5) is connected to the locking mechanism (4). When the detection mechanism (5) is buried by mud and sand, the locking mechanism (4) is opened; when the detection mechanism (5) is no longer buried by mud and sand, the locking mechanism (4) is locked.

2. The submersible self-floating river flow detection device according to claim 1, characterized in that: The lifting cylinder comprises: A first lifting cylinder (101) is arranged at the outermost layer, a first retaining ring (102) is arranged on the top of the first lifting cylinder (101), and the inner diameter of the first retaining ring (102) is smaller than the inner diameter of the first lifting cylinder (101); A second lifting cylinder (103) is partially inserted into the first lifting cylinder (101); the outer diameter of the second lifting cylinder (103) is the same as the inner diameter of the first retaining ring (102); a second retaining ring (104) is provided at the top of the second lifting cylinder (103); the inner diameter of the second retaining ring (104) is smaller than the inner diameter of the second lifting cylinder (103); a first limiting ring (105) is provided at the bottom of the second lifting cylinder (103); the outer diameter of the first limiting ring (105) is the same as the inner diameter of the first lifting cylinder (101); a first sealing ring (106) is provided on the outer wall of the first limiting ring (105); and a second sealing ring (107) is provided at the top of the first limiting ring (105); The third lifting cylinder (108) is partially inserted into the second lifting cylinder (103), the outer diameter of the third lifting cylinder (108) is the same as the inner diameter of the second retaining ring (104), a second limiting ring (109) is provided at the bottom of the third lifting cylinder (108), the outer diameter of the second limiting ring (109) is the same as the inner diameter of the second lifting cylinder (103), a third sealing ring (110) is provided on the outer wall of the second limiting ring (109), and a fourth sealing ring (111) is provided on the top of the second limiting ring (109).

3. The submersible self-floating river flow detection device according to claim 2, characterized in that: The first limiting ring (105) is provided with a first limiting hole (112), the first limiting hole (112) is L-shaped, and comprises a first vertical hole (113) and a first horizontal hole (114) which are connected to each other and extend along the axial direction of the first limiting ring (105) and extend along the radial direction of the first limiting ring (105); a first piston (116) is slidably arranged in the first vertical hole (113); a first spring (115) is arranged between the bottom of the first piston (116) and the bottom of the first vertical hole (113); when the first spring (115) is in a natural state, a part of the first piston (116) extends out of the first vertical hole (113); a second piston (117) is slidably arranged in the first horizontal hole (114); a first rack (118) is connected to one side of the second piston (117); and hydraulic oil is arranged in the first limiting hole (112) between the first piston (116) and the second piston (117); A second transverse hole (119) is provided on one side of the first transverse hole (114), and a third transverse hole (122) is provided on the second limiting ring (109). When the first limiting ring (105) is flush with the second limiting ring (109), the third transverse hole (122) is communicated with the second transverse hole (119), a part of the second rack (121) is provided in the third transverse hole (122), and a part of the second rack (121) is provided in the second transverse hole (119). A first gear (120) is provided to mesh with the first rack (118) and the second rack (121), and the second rack (121) can be completely received in the second transverse hole (119) due to sliding.

4. The submersible self-floating river flow detection device according to claim 3, characterized in that: A fixed cone (123) is provided at the bottom of the first lifting cylinder (101), and a plurality of fixed barbs (124) are provided on the side wall of the fixed cone (123); the fixed barbs (124) are plate-shaped, and the fixed barbs (124) are arranged tilted from high to low from one end away from the axis of the fixed cone (123) to one end close to the axis of the fixed cone (123).

5. The submersible self-floating river flow detection device according to claim 4, characterized in that: The air supply mechanism (2) comprises: A sealing ring (201) is arranged at the top end of the third lifting cylinder (108); A connecting pipe (202) is arranged on the top of the sealing ring (201), and a threaded section is provided on the top of the connecting pipe (202); A gas storage bottle (203) is provided with high-pressure air inside. An outlet pipe (204) is provided at the outlet end of the gas storage bottle (203). The outlet pipe (204) is a threaded pipe. The outlet pipe (204) is screwed into the threaded section. A valve is provided on the outlet pipe (204). When the valve is opened, the gas storage bottle (203) exhausts air through the outlet pipe (204); when the valve is closed, the gas storage bottle (203) stops exhausting air through the outlet pipe (204).

6. The submersible self-floating river flow detection device according to claim 5, characterized in that: The detection mechanism (5) comprises a first detection component (501) and a second detection component (502), wherein the first detection component (501) is arranged below the second detection component (502); The locking mechanism (4) comprises a first locking assembly and a second locking assembly, wherein the first locking assembly and the second locking assembly are both arranged on the connecting pipe (202), and the first locking assembly is arranged below the second locking assembly, the first locking assembly is connected to the first detection assembly (501), when the first detection assembly (501) is buried by mud and sand, the first locking assembly is unlocked, and when the first detection assembly (501) is no longer buried by mud and sand, the first locking assembly is locked; the second detection assembly (502) is connected to the second locking assembly, and the second detection assembly (502) is connected to the Doppler flowmeter (3), when the Doppler flowmeter (3) is impacted by water flow, the second locking assembly is unlocked; when the Doppler flowmeter (3) is no longer impacted by water flow, the second locking assembly is locked.

7. The submersible self-floating river flow detection device according to claim 6, characterized in that: The connecting tube (202) comprises an upper connecting tube (205), a middle connecting tube (206) and a lower connecting tube (207) which are arranged in sequence from top to bottom; the threaded section is provided on the upper connecting tube (205); the lower connecting tube (207) is connected to the sealing ring (201); the bottom of the upper connecting tube (205) is spaced apart from the top of the middle connecting tube (206); and the top of the lower connecting tube (207) is spaced apart from the bottom of the middle connecting tube (206); a first connecting groove is provided on the side wall of the upper connecting tube (205); a second connecting groove and a third connecting groove are provided on the side wall of the middle connecting tube (206); and a fourth connecting groove is provided on the side wall of the lower connecting tube (207); ) and the connecting middle tube (206) are sleeved with a first connecting ring (208), and a first fixing ring (210) and a second fixing ring (211) are arranged at intervals on the inner wall of the first connecting ring (208), the first fixing ring (210) is inserted into the first connecting groove, and the second fixing ring (211) is inserted into the second connecting groove; a second connecting ring (209) is sleeved with an outer wall of the connecting lower tube (207) and the connecting middle tube (206), and a third fixing ring (213) and a fourth fixing ring (214) are arranged at intervals on the inner wall of the second connecting ring (209), the third fixing ring (213) is inserted into the third connecting groove, and the fourth fixing ring (214) is inserted into the fourth connecting groove; The first locking assembly comprises a first locking plate (401), the first locking plate (401) being provided with a first through hole (403), the first locking plate (401) being slidably disposed between the connecting lower tube (207) and the connecting middle tube (206), and the thickness of the first locking plate (401) being the same as the distance between the connecting lower tube (207) and the connecting middle tube (206), the first locking plate (401) being able to slide so that the inner holes of the connecting lower tube (207) and the connecting middle tube (206) are connected through the first through hole (403), and the first locking plate (401) being able to slide so as to cut off the inner holes of the connecting middle tube (206) and the connecting lower tube (207); The second locking assembly comprises a second locking plate (402), the second locking plate (402) being provided with a second through hole (404), the second locking plate (402) being slidably disposed between the connecting upper tube (205) and the connecting middle tube (206), and the thickness of the second locking plate (402) being the same as the distance between the connecting upper tube (205) and the connecting middle tube (206), the second locking plate (402) being able to slide so that the inner holes of the connecting upper tube (205) and the connecting middle tube (206) are connected through the second through hole (404), and the second locking plate (402) being able to slide so as to cut off the inner holes of the connecting middle tube (206) and the connecting upper tube (205).

8. The submersible self-floating river flow detection device according to claim 7, characterized in that: The first detection component (501) comprises: A first sliding groove (503) is provided on the top surface of the connecting lower tube (207); A first conducting tube (504) is arranged on the lower end surface of the first locking plate (401), the first conducting tube (504) is in conduction with the first through hole (403), the first conducting tube (504) is arranged in the first sliding groove (503), a plurality of second springs (505) are arranged between the outer wall of the first conducting tube (504) and the side wall of the first sliding groove (503), and when each of the second springs (505) is in a natural state, the inner holes of the connecting lower tube (207) and the connecting middle tube (206) are in conduction with the conducting tube through the first through hole (403); A first detection groove (506) is provided on the first connecting ring (208), and the first detection groove (506) extends along the radial direction of the first connecting ring (208); a second detection groove (507) provided on the first connecting ring (208), and the second detection groove (507) extending in the radial direction of the first connecting ring (208), the second detection groove (507) being in communication with the first detection groove (506), and the second detection groove (507) being in conduction with the gap between the connecting lower tube (207) and the connecting middle tube (206), the outer end of the first detection groove (506) being in conduction with the external space of the first connecting ring (208), and the cross-sectional area of ​​the first detection groove (506) being larger than the cross-sectional area of ​​the second detection groove (507); A first detection rod (508) is slidably disposed in the first detection slot (506), a portion of the first detection rod (508) is disposed outside the first detection slot (506), and one end of the first detection rod (508) is spaced apart from the second detection slot (507); The first driving rod (509) is slidably disposed in the second detection groove (507), and a part of the first driving rod (509) is disposed outside the second detection groove (507), and hydraulic oil is filled between the first detection rod (508) and the first driving rod (509).

9. The submersible self-floating river flow detection device according to claim 8, characterized in that: The second detection component (502) comprises: A second sliding groove (510) is provided on the top surface of the connecting middle tube (206); A second conducting tube (511) is arranged on the lower end surface of the second locking plate (402), the second conducting tube (511) is in conduction with the second through hole (404), the second conducting tube (511) is arranged in the second sliding groove (510), a third spring (512) is arranged on the outer wall of the second conducting tube (511), the other end of the third spring (512) is in contact with the side wall of the second sliding groove, when the third spring (512) is in a natural state, the inner holes of the connecting upper tube (205) and the connecting middle tube (206) are cut off by the second locking plate (402), and under the action of external force, the inner holes of the connecting upper tube (205) and the connecting middle tube (206) can be conducted through the second conducting tube (511); A third detection groove (514) is provided on the second connecting ring (209), and the third detection groove (514) extends along the radial direction of the second connecting ring (209); a fourth detection groove (515) provided on the second connecting ring (209), and the fourth detection groove (515) extending in the radial direction of the second connecting ring (209); the third detection groove (514) being in communication with the fourth detection groove (515), and the fourth detection groove (515) being in communication with the gap between the connecting upper tube (205) and the connecting middle tube (206); an outer end of the third detection groove (514) being in communication with the external space of the second connecting ring (209); and a cross-sectional area of ​​the third detection groove (514) being larger than a cross-sectional area of ​​the fourth detection groove (515); A second detection rod (516) is slidably disposed in the third detection slot (514), a portion of the second detection rod (516) is disposed outside the third detection slot (514), and one end of the second detection rod (516) is spaced apart from the fourth detection slot (515); A second driving rod (517) is slidably disposed in the second detection groove (507), and the other end of the second driving rod (517) is connected to the second locking plate (402), and hydraulic oil is filled between the second detection rod (516) and the second driving rod (517); The guide rail (518) is provided on the connecting upper pipe (205). The Doppler flowmeter (3) is slidably provided on the guide rail (518), and a third detection rod (519) is provided at the bottom of the Doppler flowmeter (3). The third detection rod (519) abuts against the second driving rod (517).

10. The immersion type self-floating river flow detection device according to claim 9, wherein: A "C"-shaped connecting rod (215) is provided between the first connecting ring (208) and the second connecting ring (209). An installation rod (216) arranged perpendicular to the axial direction of the connecting pipe (202) is provided on the connecting rod (215). The installation rod (216) is arranged parallel to the guide rail (518). A tail plate (217) is provided at the rear end of the installation rod (216). The tail plate (217) is arranged vertically and is parallel to the guide rail; The extending directions of the first detection groove (506) and the third detection groove (514) are parallel to the guide rail, and the opening ends of the first detection groove (506) and the third detection groove (514) face in a direction opposite to the extending direction of the tail plate (217).

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