Pitot backrest tube flow measuring device

Abstract

The invention relates to the technical field of flow measurement, and discloses a Pitot backrest tube flow measurement device which comprises an integration part and a probe rod rotationally connected with the integration part, a front through hole and a rear through hole are formed in the probe rod, the two through holes both penetrate through the two ends of the probe rod, a plurality of double-cone cavities are formed in the probe rod and communicated with the through holes in the two sides, and the integration part is connected with the integration part. A double-cone body is installed in the double-cone cavity, the size of the double-cone body is smaller than that of the double-cone cavity, the double-cone body slides left and right in the double-cone cavity, a rotatable probe rod rotates and adjusts a straight-face runoff pipeline to form a dynamic pressure pipe, a static pressure pipe is arranged on the other side of the double-cone body, and in the rotating process, the double-cone body moves in the double-cone cavity so that the dynamic pressure pipe can be communicated with the static pressure pipe. The displaced double-cone body enables the double-cone cavity to form a structure similar to a compressor, runoff is guided into the double-cone cavity by the side facing the runoff, and the runoff faces the other connector with the narrowed path when flowing continuously and is sprayed out from the other connector so as to impact tasty blockages, namely the structure, on the original dynamic pressure pipe.

Description

Technical Field

[0001] The invention relates to the technical field of flow measurement, in particular to a Bitopa backrest tube flow measurement device. Background Art

[0002] When the Bitopa tube is used for flow measurement, its probe section is inserted into the runoff, and the runoff flow rate and flow pressure are measured by the pressure difference between the front and rear dynamic pressure tubes and the static pressure tubes.

[0003] The dynamic pressure tube of the probe directly faces the impact of runoff flow. During use, it is prone to scaling and clogging, which in turn affects the accuracy of the measurement. The test device welded and fixed in the runoff pipe is difficult to remove and clean the probe part. Therefore, a Bitopa backrest tube flow measurement device is proposed. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a Bitobar backrest tube flow measurement device, which has advantages and solves the problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a Bitopa backrest tube flow measurement device, comprising an integrated part and a probe rod rotatably connected to the integrated part, the probe rod is provided with two front and rear through holes to form a dynamic pressure tube and a static pressure tube, the two through holes pass through both ends of the probe rod, the two through holes are provided with a plurality of holes perpendicular to the probe rod, the holes connect the through holes with the surface of the probe rod, the probe rod is provided with a plurality of double-cone cavities connecting the through holes on both sides, the center lines of the double-cone cavities and the through holes on both sides are on the same straight line, a double cone is installed in the double-cone cavity, the size of the double cone is smaller than the double cone cavity; the center lines of the double cone and the double cone cavity are on the same Straight line, the double cone slides left and right in the double cone cavity, and the interfaces between the double cone cavity and the pipes on both sides can be blocked. A rotatable probe rod is used to adjust the pipe facing the runoff by rotation to form a dynamic pressure pipe, and the other side is a static pressure pipe, which meets the required conditions for the dynamic pressure chamber and the static pressure chamber to work. During the rotation, the double cone will move in the double cone cavity to connect the dynamic pressure pipe and the static pressure pipe. The displaced double cone makes the double cone cavity form a structure similar to a compressor. The side facing the runoff guides the runoff into the double cone cavity. When the runoff continues to flow, it faces the other interface where the path becomes narrower and is ejected from it to impact the blockage on the original dynamic pressure pipe, i.e., the structure, to achieve a cleaning effect.

[0006] Preferably, the end of the probe rod is provided with an attachment seat docked therewith, and the attachment seat is provided with a positioning rod inserted into the probe rod, the positioning rod passes through a plurality of double-cone cavities, and the positioning rod passes through each double cone accordingly. The probe rod rotates while the positioning rod does not rotate, thereby facilitating adjustment of the position of the double cone connected to the rotating rod.

[0007] Preferably, a through groove is provided on the double cone to accommodate the passage of the positioning rod, and a convex tooth is provided on one side of the inner wall of the through groove. A gear ring is provided at one end of the positioning rod corresponding to the through groove, and the gear ring is meshingly connected with the convex tooth. When the probe rod rotates, the double cone is driven to rotate together, while the positioning rod does not rotate, so that the position of the double body in the double cone cavity moves.

[0008] Preferably, a flat groove is provided on the upper and lower sides of the convex tooth, and a limit plate is provided on the upper and lower sides of the gear ring, respectively. The limit plates are embedded in the corresponding flat grooves to limit the horizontal height of the double main bodies.

[0009] Preferably, a guide pressure head with a diameter smaller than the inner diameter of the hole is provided at each end of the double cone to change the shape of the runoff ejected from the reduced nozzle, so as to facilitate targeted impact on the hole contour of the new static pressure pipe.

[0010] Preferably, a spring seat is installed in the auxiliary seat, and a plugging head is elastically connected to the spring seat, which is embedded in the bottom through hole on one side of the probe rod to plug the bottom opening of the dynamic pressure tube, so as to facilitate the diversion of the dynamic pressure chamber when it is working, improve the measurement accuracy, and avoid diversion when flushing the original dynamic pressure tube.

[0011] Preferably, a concave layer is provided on the other side of the attachment seat opposite to the plugging head, and the concave layer exposes the bottom through hole on the other side of the probe rod, so as to facilitate flushing of the prime mover pressure pipe and facilitate the flow away after impacting the prime mover pressure pipe.

[0012] Preferably, a servo motor is provided in the integrated portion and is transmission-connected to the probe rod.

[0013] Preferably, each of the two through holes on the corresponding probe rod in the integrated part is provided with a solenoid valve connected thereto to avoid flow diversion when flushing the prime mover pressure pipe, so as to increase the impact pressure.

[0014] Compared with the prior art, the present invention provides a Bitoba backrest tube flow measurement device, which has the following beneficial effects: a rotatable probe rod is used to adjust the pipeline facing the runoff by rotation to form a dynamic pressure tube, and the other side is a static pressure tube, which meets the required conditions for the operation of the dynamic pressure chamber and the static pressure chamber. During the rotation, the double cone will move in the double cone cavity to connect the dynamic pressure tube and the static pressure tube. The displaced double cone makes the double cone cavity form a structure similar to a compressor. The side facing the runoff guides the runoff into the double cone cavity. When the runoff continues to flow, it faces the other interface where the path becomes narrower and is ejected from it to impact the blockage on the original dynamic pressure tube, i.e., the structure, to achieve a cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the installation structure of a Bitobar backrest tube flow measurement device of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall structure of a Bitobar backrest tube flow measurement device of the present invention;

[0017] Figure 3 A schematic diagram of the probe structure of a Bitobar backrest tube flow measurement device of the present invention;

[0018] Figure 4 It is a schematic diagram of the connection structure of the double vertebrae and the positioning rod of a Bitopa backrest tube flow measurement device of the present invention;

[0019] Figure 5 It is a schematic diagram of the flow direction of the inner diameter flow pressure of the dynamic pressure tube and the static pressure tube when the probe rod of the Bitopa backrest tube flow measurement device of the present invention is working;

[0020] Figure 6 It is a schematic diagram of the inner diameter flow direction of the dynamic pressure tube and the static pressure tube of a Bitopa backrest tube flow measurement device of the present invention when the probe rod is self-cleaning;

[0021] Figure 7 It is a schematic diagram of the structure of a double cone guide pressure head of a Bitobar backrest tube flow measurement device of the present invention;

[0022] Figure 8 The present invention is a schematic structural diagram of a Bitobar backrest tube flow measurement device attachment seat.

[0023] In the figure:

[0024] 1. Integration department;

[0025] 2. probe rod; 21. double cone cavity; 22. double cone; 221. through groove; 222. convex teeth; 223. flat groove; 224. guide pressure head;

[0026] 3. Attached seat; 31. Plug head; 32. Spring seat; 33. Concave layer;

[0027] 4. Positioning rod; 41. Limiting piece; 42. Gear ring;

[0028] 5. Baffle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] As described in the background technology, the existing technology has deficiencies. In order to solve the above technical problems, the present application proposes a Bitobar backrest tube flow measurement device, such as Figure 1-8 As shown, a Bitopa backrest tube flow measurement device comprises an integrated part 1, a probe rod 2 connected to the integrated part 1, and an attachment 3 docked with the end of the probe rod 2. The probe rod 2 has the same dynamic pressure tube and static pressure tube as a conventional Bitopa flowmeter, but the difference is that the probe rod 2 is rotatably connected to the integrated part 1, and the original dynamic pressure tube and static pressure tube can be replaced by rotating, and the static pressure tube replaces the dynamic pressure tube and is connected to the original dynamic pressure cavity, and the dynamic pressure tube replaces the static pressure tube and is connected to the original static pressure cavity, and can continue to work;

[0031] For details, see Figure 1 and Figure 2 As shown, the probe rod 2 is inserted into the pipeline, and the attachment seat 3 is fixedly installed on the inner wall of the pipeline and docked with the end of the probe rod 2. The insertion length of the probe rod 2 and the thickness of the attachment seat 3 are equal to the inner diameter of the pipeline. The dynamic pressure pipe and the static pressure pipe are both opened on the same entity probe rod 2, and both pipes are connected to the end of the probe rod 2. A positioning rod 4 is fixedly installed on the attachment seat 3 and inserted into the center of the probe rod 2;

[0032] For further information, see Figure 2 and Figure 3 As shown, the dynamic pressure pipe on the probe rod 2 is provided with a plurality of holes in the direction of the radial flow, and the static pressure pipe is provided with a plurality of identical holes at the same height. A baffle plate 5 is also extended from the integrated part 1 to be inserted into the pipeline, and the baffle plate 5 is attached to the hole opening of the static pressure pipe on the probe rod 2. A plurality of double-cone cavities 21 are provided inside the probe rod 2 to connect the dynamic pressure pipes and the static pressure pipes on both sides, and each double-cone cavity 21 is at the same height as the holes provided on the pipelines on both sides. A double cone 22 is installed in the double-cone cavity 21, and the double cone 22 is at the same height as the center line of the double-cone cavity 21, and can slide to both sides of the double-cone cavity 21 respectively to block the connecting opening between the double-cone cavity 21 and the pipelines on both sides, so as to ensure that the two chambers connected by the dynamic pressure pipe and the static pressure pipe will not interfere with each other.

[0033] For further information, see Figure 4As shown, a through slot 221 parallel to the direction of the positioning rod 4 is provided on the double cone 22, and the through slot 221 completely penetrates the double cone 22. A convex tooth 222 is provided on the inner wall of one side of the through slot 221. A flat slot 223 is provided on the upper and lower sides of the convex tooth 222. A portion of the positioning rod 4 corresponding to the through slot 221 is provided with a limiting piece 41 and a gear ring 42. The limiting piece 41 is provided with one piece each at the upper and lower sides, and is correspondingly embedded in the upper and lower flat slots 223. The gear ring 42 is meshed with the convex tooth 222 on one side. Next, in combination with the foregoing content, the positions of the dynamic pressure tube and the static pressure tube can be adjusted by rotating the probe rod 2. During the rotation process, the double cone 22 is restricted by the inner wall of the double cone cavity 21 and rotates along with the probe rod 2. During the rotation process, the positioning rod 4 does not rotate, so that the gear ring 42 guides the double cone 22 to move to one side. The moving direction of the double cone 22 is controlled by adjusting the rotation direction. During the movement, the height of the double cone 22 is kept stable by the restriction of the limit plate 41.

[0034] Crucially, see Figure 5 and Figure 6 As shown, when the double cone 22 is in a position to block the communication port between the double cone cavity 21 and the dynamic pressure tube, the hole on the dynamic pressure tube directly faces the runoff, guides the runoff into the dynamic pressure tube, and conducts it to the dynamic pressure chamber at the integrated part 1, while the static pressure tube bears the static pressure of the runoff to conduct it to the static pressure chamber at the integrated part 1 (as shown in FIG. Figure 5 As shown), rotate the probe 2 so that the double cone 22 is slightly offset to one side, and the original dynamic pressure tube is rotated to the position of the original static pressure tube, and the original static pressure tube is rotated to the position of the original dynamic pressure tube (as shown). Figure 6 As shown), at this time, the interface between the new dynamic pressure pipe and the double cone cavity 21 is in an open state, and the interface between the new static pressure pipe and the double cone cavity 21 is also in a conical structure and slightly opened. When the hole opened by the new dynamic pressure pipe faces the impact of runoff, the runoff directly rushes into the interface between the double cone cavity 21 and the new dynamic pressure pipe from the hole opened, and is pressurized and ejected through the gap between the double cone 22 and the double cone cavity 21, acting on the hole of the original dynamic pressure pipe to perform a high-pressure impact on the scale and blockage on the hole of the original dynamic pressure pipe, and to dredge the original dynamic pressure pipe. At the same time, the hole on the original dynamic pressure pipe is blocked by the baffle 5, and the runoff ejected from the interface will also act on the original dynamic pressure pipe, impacting the original dynamic pressure pipe to clean the inner wall of the dynamic pressure pipe.

[0035] For further information, see Figure 8As shown in the figure, the part of the accessory seat 3 corresponding to the contact with the dynamic pressure tube is provided with a spring seat 32, and a plugging head 31 is provided on the spring seat 32 to seal the end of the dynamic pressure tube. The part of the accessory seat 3 corresponding to the contact with the static pressure tube is provided with a concave layer 33 to ensure the connection between the end of the static pressure tube and the runoff, so that in the working state, the runoff impact faced by the dynamic pressure tube will not be diverted by the end opening thereof, resulting in inaccurate measurement. At the same time, the concave layer 33 is provided to facilitate the static pressure chamber to be connected with the runoff, and when the original dynamic pressure tube is cleaned, the cleaned impurities can flow away from the bottom opening.

[0036] It should be added that the rotation of the probe rod 2 can be driven by a servo motor installed in the integrated part 1, or by other means. It is not a key technical means of the present invention and will not be elaborated here. However, please note that after the rotation, the original dynamic pressure tube is offset from the dynamic pressure chamber. At this time, when the new dynamic pressure tube faces the impact of the runoff, although there is a direct impact between the double cone cavity 21 and the interface of the new dynamic pressure tube, part of the pressure may still act on the dynamic pressure chamber. A solenoid valve can be arranged in the integrated part 1 to connect the dynamic pressure tube and the dynamic pressure chamber. When the double cone 22 does not completely block the interface between the dynamic pressure tube or the static pressure tube and the double cone cavity 21, the solenoid valve is closed. Similarly, another solenoid valve is arranged between the static pressure tube and the static pressure chamber, and the same closing condition is adopted to avoid the dynamic and static pressure chambers being affected by the rotation of the probe rod 2, and to avoid diversion of the runoff impact. It can stably act on the entire section of the new static pressure tube to achieve a better flushing effect.

[0037] In addition, see Figure 4 as well as Figure 7 As shown in the figure, a guide pressure head 224 is provided at both ends of the double cone 22. When there is a through hole between the double cone 22 and the double cone cavity 21, the through hole is a conical structure, and the ejected runoff is also a conical structure, which cannot accurately act on the hole position contours opened on the pipelines on both sides. A guide pressure head 224 is provided, and its diameter is slightly smaller than the hole position diameter. When the runoff is ejected from the interface between the double cone cavity 21 and the original dynamic pressure pipe, the inner diameter of the ejected runoff can be limited to a degree close to the guide pressure head 224, and accurately act on the hole position contour of the original dynamic pressure pipe, thereby achieving a better impact effect.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Bitopa backrest tube flow measurement device, comprising an integrated part (1) and a probe rod (2) rotatably connected to the integrated part (1), characterized in that: The probe rod (2) is provided with two front and rear through holes to form a dynamic pressure tube and a static pressure tube. The two through holes penetrate through both ends of the probe rod (2). The two through holes are provided with a plurality of holes perpendicular to the probe rod (2). The holes connect the through holes with the surface of the probe rod (2). The probe rod (2) is provided with a plurality of double-cone cavities (21) to connect the through holes on both sides. The center lines of the double-cone cavities (21) and the through holes on both sides are on the same straight line. A double cone (22) is installed in the double-cone cavity (21). The size of the double cone (22) is smaller than that of the double-cone cavity (21). The center lines of the double cone (22) and the double cone cavity (21) are in the same straight line. The double cone (22) slides left and right in the double cone cavity (21) to seal the interfaces between the double cone cavity (21) and the pipelines on both sides.

2. A Bitobar backrest tube flow measurement device according to claim 1, characterized in that: The end of the probe rod (2) is provided with an attachment seat (3) docked therewith, and the attachment seat (3) is provided with a positioning rod (4) inserted into the probe rod (2), and the positioning rod (4) passes through a plurality of double cone cavities (21), and the positioning rod (4) passes through each double cone (22) accordingly.

3. A Bitobar backrest tube flow measurement device according to claim 2, characterized in that: The double cone (22) is provided with a through groove (221) to accommodate the positioning rod (4) to pass through, a convex tooth (222) is provided on one side of the inner wall of the through groove (221), and a gear ring (42) is provided at one end of the positioning rod (4) corresponding to the through groove (221), and the gear ring (42) is meshedly connected with the convex tooth (222).

4. A Bitobar backrest tube flow measurement device according to claim 3, characterized in that: The upper and lower sides of the protruding teeth (222) are each provided with a flat groove (223), and the upper and lower sides of the gear ring (42) are each provided with a limiting plate (41), and the limiting plate (41) is embedded in the corresponding flat groove (223).

5. A Bitobar backrest tube flow measurement device according to claim 1, characterized in that: Both ends of the double cone (22) are respectively provided with a guide pressure head (224) having a diameter smaller than the inner diameter of the hole.

6. A Bitobar backrest tube flow measurement device according to claim 1, characterized in that: A spring seat (32) is installed in the attachment seat (3), and a plugging head (31) is elastically connected to the spring seat (32) and embedded in the bottom through hole on one side of the probe rod (2).

7. A Bitobar backrest tube flow measurement device according to claim 6, characterized in that: A concave layer (33) is provided on the other side of the attachment seat (3) opposite to the plugging head (31), and the concave layer (33) exposes the bottom through hole on the other side of the probe rod (2).

8. The Bitopa backrest tube flow measurement device according to claim 1, characterized in that: A servo motor is arranged in the integrated part (1) and is transmission-connected to the probe rod (2).

9. The Bitobar backrest tube flow measurement device according to claim 1, characterized in that: Two through holes in the integrated part (1) corresponding to the probe rod (2) are each provided with a solenoid valve in communication therewith.

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