CN218035164U

CN218035164U - Gas flow detection device inserted into flowmeter

Info

Publication number: CN218035164U
Application number: CN202222409262.6U
Authority: CN
Inventors: 梁鑫鑫; 管仁民; 孟安; 杨浩; 王岩
Original assignee: Rizhao Steel Holding Group Co Ltd
Current assignee: Rizhao Steel Holding Group Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-13
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to the technical field of flowmeter air flow detection, and discloses an air flow detection device inserted into a flowmeter, which comprises an insertion pipe detection component, a variable pressure metering component connected with the insertion pipe detection component, and a pressure sensor connected with the insertion pipe detection component; the airflow roll-out joint: the flow probe is arranged on the intubation detection component and is communicated with the intubation detection component; the airflow is transferred into a joint: the variable-pressure metering component is arranged on the variable-pressure metering component; a flexible tube: the air flow transferring joint is arranged between the air flow transferring-out joint and the air flow transferring-in joint; the quick connection structure comprises: the corresponding two that are provided with in the flexible tube both ends, one of them is connected flexible tube one end on the air current is changeed out the joint, and another connects the flexible tube other end on the air current changes over to the joint, the utility model discloses a flexible tube can make this detection metering device keep apart with fan pipeline vibration source, but non-deviation intercepting fan air flow pipeline differential pressure signal, makes the fan flow pressure oscillation condition that the vibration caused disappear, detects data stabilization.

Description

Gas flow detection device inserted into flowmeter

Technical Field

The utility model relates to a flowmeter tolerance detects technical field, more specifically relates to an insert flowmeter tolerance detection device.

Background

The Roots blower belongs to a positive displacement blower, and the end faces of an impeller and front and rear end covers of the blower. The principle is a rotary compressor which compresses and conveys gas by utilizing the relative motion of two blade-shaped rotors in a cylinder. The air blower has simple structure and convenient manufacture, is widely applied to aquaculture oxygenation, sewage treatment aeration and cement conveying, is more suitable for a gas conveying and pressurizing system in a low-pressure occasion, and can also be used as a vacuum pump and the like.

At present, the Roots blower at the head of a zinc-extracting rotary kiln generally adopts a bar-type integrated plug-in type flowmeter to detect the used air volume detection device, mainly comprises a sensor, a sampling pipe, a communicating pipe, a stop valve, a three-valve set, a transmitter and the like, and is installed in a DN 400-pipe-diameter metal pipeline (as shown in figure 1), because the limited space distance is about 6 meters from the blower body, the 400KW Roots blower air volume pipeline vibrates at 14.1mm/S ² The high-strength vibration causes unstable detection data of the secondary instrument, the flow detection value fluctuates irregularly about 5%, and the air quantity detection data is distorted, so that the data cannot be a guidance basis for the kiln head process operation of the zinc extraction kiln, and the passivity is brought to the stable production of the zinc extraction kiln.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming above-mentioned prior art's at least one defect, provide an insert flowmeter tolerance detection device for the solution brings the unstable, the undulant big technical problem of flow data signal of measurement for the flowmeter because of roots's fan pipeline self vibration.

The technical scheme adopted by the utility model is that the air flow detection device for the plug-in flowmeter comprises an insertion pipe detection component, a variable pressure metering component connected with the insertion pipe detection component and a pressure sensor, wherein the variable pressure metering component is connected with the insertion pipe detection component; the air flow is turned out and connected: the flow probe is arranged on the intubation detection component and is communicated with the intubation detection component; the airflow is transferred into a joint: is arranged on the variable pressure metering component; a flexible tube: the air flow transferring joint is arranged between the air flow transferring-out joint and the air flow transferring-in joint; the quick connection structure comprises: two ends of the flexible pipe are correspondingly arranged, one end of the flexible pipe is connected to the airflow transferring-out connector, and the other end of the flexible pipe is connected to the airflow transferring-in connector.

The scheme is mainly used for detecting the airflow, the intubation tube detection assembly is mainly used for inserting the tube to be detected and outputting the airflow in the tube to be detected, and the variable-pressure metering assembly is used for separately metering the airflow transmitted by the intubation tube detection assembly; the airflow transfer-out joint is used for transferring output airflow, the airflow input joint is used for transferring input airflow, and the flexible pipe is used for connecting the airflow transfer-out joint and the airflow transfer-in joint; when detecting, when the intubate was surveyed the subassembly and is received the influence vibration of the air current velocity of flow, the compliance tube can play fine cushioning effect, can prevent effectively that the vary voltage measurement subassembly from receiving the vibration to effectively solve the unstable, undulant big problem of flow data signal of measurement.

Furthermore, the peripheral surfaces of the air flow transferring-out joint and the air flow transferring-in joint are provided with annular grooves, and the annular grooves can contain a part of flexible pipes, so that the connection strength and the air tightness after connection can be effectively improved in practice.

Further, the quick-connect structure includes: opening a ring: the flexible pipe is arranged along the outer circumferential surface of the flexible pipe, and a first opening end and a second opening end are formed at the opening; a first connecting piece: is arranged on the first opening end; a second connecting member: the first connecting piece is in threaded connection with the first connecting piece so as to be coupled with the second opening end, the first connecting piece is convenient to disassemble and assemble in a threaded connection mode, force generated by threaded screwing is large, and the connection strength of the tightly hooped flexible pipe is high; the first opening end is provided with a perforated seat, and the first connecting piece is inserted into the perforated seat; the second open end is equipped with the slot seat, and first connecting piece inlays with the slot seat and inserts the cooperation, and the trompil seat is used for installing first connecting piece, inlays to insert the complex mode and is convenient for open and close the split ring. .

Furthermore, the first opening end is provided with a perforated seat, and the first connecting piece is inserted into the perforated seat; the second open end is provided with a slot seat, the first connecting piece is embedded and inserted in the slot seat, the hole seat is used for installing the first connecting piece, and the split ring can be opened and closed conveniently in an embedding and inserting matching mode.

Furthermore, the first connecting piece comprises a perforated bolt inserted in the perforated seat, and an eccentric handle rotationally connected to a bolt head of the perforated bolt; the second connecting piece is a first nut in threaded connection with the perforated bolt; the screw rod of the perforated bolt is inserted into the slot in the slot seat; when the nut I is tightened, the nut I is rotated, when the size of the screw rod close to the hollow bolt is general to that of the opening of the split ring, the screw rod of the split bolt is inserted into the slot seat, then the eccentric handle of the bolt head at the end of the split bolt is rotated, the radius of the eccentric handle is increased, the outer peripheral surface of the eccentric handle and the end surface of the slot seat are extruded, the distance between the nut I and the end of the split bolt is continuously drawn, the distance between the slot seat and the slot seat is shortened, and the first opening end and the second opening end are closed; when the installation, the perforated bolt can be directly inserted and pulled out from the slot seat, the disassembly and assembly efficiency can be effectively improved by the mode, and the flexible pipe can be disassembled and assembled at a later stage.

Furthermore, the first connecting piece comprises a T-shaped bolt inserted in the open hole seat, the end of the T-shaped bolt is inserted in the slot seat, and the second connecting piece is a nut II in threaded connection with the T-shaped bolt; and nut two with the crowded press fit of trompil seat terminal surface, T type bolt end and the crowded press fit of slot seat terminal surface, when the installation, T type bolt can carry out the plug dismouting with the slot seat, can effectively improve dismouting efficiency, the later stage dismouting of being more convenient for is changed the flexible pipe.

Further, the cannula detecting assembly further comprises: and the pressure guide pipe is connected between the flow probe and the airflow roll-out joint and is used for guiding airflow with certain pressure from an airflow pipeline of the fan.

Further, the variable pressure metering assembly comprises: the three valve groups are used in cooperation with the differential pressure transmitter and are used for connecting or disconnecting the positive and negative pressure measuring chambers with a pressure leading point; or to disconnect or connect the positive and negative pressure measurement chambers.

Further, the fast tying constructs for connecting the PC joint at the flexible tube end, and two PC joints are connected with two at the both ends correspondence of flexible tube, and it can be with the air current roll-out joint with air current income joint high-speed joint, can further improve dismouting efficiency.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the detection metering device can be isolated from a fan pipeline vibration source through the flexible pipe, a fan airflow pipeline pressure difference signal can be intercepted without deviation, the fan flow pressure fluctuation condition caused by vibration disappears, and the detection data is stable; 2. the flexible pipe can be quickly disassembled and assembled through the quick connection structure, and the subsequent replacement and maintenance of the flexible pipe are more convenient.

Drawings

Fig. 1 is a schematic structural view of a conventional air volume measuring device.

Fig. 2 is a schematic connection diagram of a flexible pipe according to a first embodiment of the present invention.

Fig. 3 is a partial structural sectional view of a flexible pipe according to an embodiment of the present invention.

Fig. 4 is a schematic view illustrating the first connecting member and the second connecting member according to a first embodiment of the present invention.

Fig. 5 is a schematic view illustrating the cooperation of the T-shaped bolt and the nut according to the first embodiment of the present invention.

Fig. 6 is a schematic view of a second embodiment of the present invention, showing a bolt and a nut.

Fig. 7 is a schematic view of the connection between the flexible pipe and the pc joint in the third embodiment of the present invention.

In the figure: 1. the pipe inserting detection assembly comprises a pipe inserting detection assembly, 2, a variable pressure metering assembly, 3, an airflow transfer-out connector, 4, a flow probe, 5, an airflow transfer-in connector, 6, a flexible pipe, 7, a quick connection structure, 8, a ring groove, 9, an opening ring, 10, a first opening end, 11, a second opening end, 12, a first connecting piece, 13, a second connecting piece, 14, an opening seat, 15, a slot seat, 16, an opening bolt, 17, an eccentric handle, 18, a nut I, 19, a T-shaped bolt, 20, a nut II, 21, an airflow pipeline, 22, a pressure guide pipe, 23, a three-valve set, 24, a differential pressure transmitter, 25 and a PC quick connector.

Detailed Description

The drawings of the present invention are for illustration purposes only and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

As shown in fig. 2, the roots blower air quantity metering device comprises a sensor, a sampling tube, a communicating tube, a stop valve, a three-valve set, a transmitter and other components, can be divided into two large parts according to the functions and working modes of the components, namely a flow probe 4, a pressure guide tube 22 and the like, and is an intubation detection assembly 1 for inserting a DN400 metal tube; three valve groups 23, a differential pressure transmitter 24 and the like, and is used for measuring the pressure of the variable pressure measuring component 2.

This scheme is mainly improved current zinc lifting rotary kiln head roots fan amount of wind metering device, use the mode of teletransmission pressure tapping, it is unstable to solve to bring the measurement for the flowmeter because of roots fan pipeline self vibration, the undulant big problem of flow data signal, thereby can provide more accurate stable measurement data for production technology, effectively guide post technology operation stable production, for providing the accuracy after the improvement, stabilize amount of wind detection data, for providing important operation foundation in the complicated technology operation of zinc lifting kiln, at the kiln head amount of wind, temperature control, play great effect in the technological control such as kiln head ring formation.

Example one

As shown in fig. 2, the present embodiment discloses an insertion flow meter gas amount detection device, which includes an intubation detection assembly 1, a variable pressure metering assembly 2 connected to the intubation detection assembly 1, and further includes; airflow transfer-out joint 3: the flow probe 4 is arranged on the intubation detection component 1 and is communicated with the intubation detection component 1; the airflow is transferred to the joint 5: is arranged on the variable-pressure metering component 2; the flexible pipe 6: the air flow transferring-out joint is arranged between the air flow transferring-in joint 3 and the air flow transferring-in joint 5; quick-connect structure 7: two ends of the flexible pipe 6 are correspondingly provided, one end of the flexible pipe 6 is connected to the airflow roll-out connector 3, the other end of the flexible pipe 6 is connected to the airflow roll-in connector 5, and the flexible pipe 6 can be a PU (polyurethane) hose.

The scheme is mainly used for detecting the airflow, the intubation detection component 1 is mainly used for inserting a pipe to be detected and outputting the airflow in the pipe to be detected, and the variable-pressure metering component 2 is used for separately metering the airflow transmitted by the intubation detection component 1; the airflow roll-out joint 3 is used for outputting airflow in a rotating mode, the airflow input joint is used for inputting airflow in a rotating mode, and the flexible pipe 6 is used for connecting the airflow roll-out joint 3 and the airflow roll-in joint 5; when detecting, when intubate was surveyed subassembly 1 and is received the influence vibration of air current velocity of flow, the flexible tube 6 can play fine cushioning effect, can effectively prevent that vary voltage measurement subassembly 2 from receiving the vibration to effectively solve the unstable, the undulant big problem of flow data signal of measurement.

As shown in fig. 3, the circumferential surfaces of the air flow discharging joint 3 and the air flow incoming joint 5 are provided with annular grooves 8, and a part of the flexible pipe 6 can be accommodated in the annular grooves 8, so that in practice, the connection strength and the air tightness after connection can be effectively improved.

As shown in fig. 4, the quick-connect structure 7 includes: open ring 9: the flexible pipe is arranged along the peripheral surface of the flexible pipe 6, and a first opening end 10 and a second opening end 11 are formed at the opening; first connecting member 12: is arranged on the first open end 10; second connecting member 13: the first connecting piece 12 is in threaded connection with the first connecting piece 12 so that the first connecting piece 12 is coupled with the second opening end 11, the first connecting piece 12 is convenient to disassemble and assemble in a threaded connection mode, force generated by threaded screwing is large, and the connection strength of the tightly-hooped flexible pipe 6 is high; the first opening end 10 is provided with a perforated seat 14, and the first connecting piece 12 is inserted into the perforated seat 14; the second opening end 11 is provided with a slot seat 15, the first connecting piece 12 is in embedded fit with the slot seat 15, the open hole seat 14 is used for installing the first connecting piece 12, and the open ring 9 can be opened and closed conveniently in the embedded fit mode.

As shown in fig. 5, the first connecting member 12 includes a T-shaped bolt 19 inserted into the open-hole seat 14, the end of the T-shaped bolt 19 is inserted into the slot seat 15, and the second connecting member 13 is a second nut 20 in threaded connection with the T-shaped bolt 19; and the second nut 20 is in extrusion fit with the end face of the perforated seat 14, the end of the T-shaped bolt 19 is in extrusion fit with the end face of the slot seat 15, when the T-shaped bolt is installed, the T-shaped bolt 19 can be plugged and pulled out and assembled with the slot seat 15, the assembly and disassembly efficiency can be effectively improved, and the flexible pipe 6 can be disassembled and replaced conveniently in the later period.

As shown in fig. 2, the intubation probe assembly 1 further includes: the pressure guide pipe 22 is connected between the flow probe 4 and the airflow roll-out joint 3, and the pressure guide pipe 22 is used for guiding airflow with certain pressure from the fan airflow pipeline 21; the variable pressure metering assembly 2 comprises: the three valve groups 23 are communicated with the airflow transfer connector 5, the differential pressure transmitter 24 is connected with the three valve groups 23, and the three valve groups 23 are matched with the differential pressure transmitter for use and have the function of connecting or disconnecting the positive and negative pressure measuring chambers and the pressure leading point; or to disconnect or connect the positive and negative pressure measurement chambers.

Example 2

As shown in fig. 6, the present embodiment is different from the first embodiment in that the first connecting member 12 in the present embodiment includes a hole bolt 16 inserted into the hole seat 14, and an eccentric handle 17 rotatably connected to a head of the hole bolt 16; the second connecting piece 13 is a first nut 18 which is in threaded connection with the perforated bolt 16; the screw of the perforated bolt 16 is inserted into the slot in the slot seat 15; and the first nut 18 is in extrusion fit with the end face of the slot seat 15, and the eccentric handle 17 is in extrusion fit with the end face of the perforated seat 14.

During tightening, firstly, the first nut 18 is rotated, when the screw rod close to the hollow bolt 16 and the opening size of the split ring 9 are common, the screw rod of the perforated bolt 16 is inserted into the slot seat 15, then the eccentric handle 17 at the end bolt head of the perforated bolt 16 is rotated, the radius of the eccentric handle 17 is increased, so that the outer peripheral surface of the eccentric handle 17 and the end surface of the perforated seat 14 are squeezed, the distance between the first nut 18 and the end head of the perforated bolt 16 is continuously shortened, the distance between the perforated seat 14 and the slot seat 15 is shortened, and the first opening end 10 and the second opening end 11 are closed; when the perforated bolt 16 is installed, the perforated bolt can be directly inserted and pulled out from the slot seat 15, the dismounting efficiency can be effectively improved in the mode, and the flexible pipe 6 is dismounted and replaced at the later stage.

EXAMPLE III

As shown in fig. 7, the difference between the present embodiment and the first embodiment is that, in the present embodiment, the quick connection structure 7 is a PC joint 25 connected to the end of the flexible pipe 6, and two PC joints 25 are correspondingly connected to two ends of the flexible pipe 6, and can be quickly connected to the airflow outgoing joint 3 and the airflow incoming joint 5, so as to further improve the dismounting efficiency.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not limitations to the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. The utility model provides an insert flowmeter tolerance detection device, surveys the subassembly, surveys the vary voltage measurement subassembly that the subassembly is connected, its characterized in that with the intubate including the intubate: also includes;

the airflow roll-out joint: the flow probe is arranged on the intubation detection component and is communicated with the intubation detection component;

the airflow is transferred into a joint: the variable-pressure metering component is arranged on the variable-pressure metering component;

flexible pipe: the air flow transferring joint is arranged between the air flow transferring-out joint and the air flow transferring-in joint;

the quick connection structure: two ends of the flexible pipe are correspondingly provided, one end of the flexible pipe is connected to the airflow transferring-out joint, and the other end of the flexible pipe is connected to the airflow transferring-in joint.

2. The gas flow detection device of an insertion flow meter according to claim 1, wherein: and annular grooves are formed in the outer peripheral surfaces of the airflow roll-over joint and the airflow roll-over joint.

3. The gas quantity detection device of the insertion flow meter according to claim 1, characterized in that: the quick-connect structure includes:

opening a ring: the flexible pipe is arranged along the outer circumferential surface of the flexible pipe, and a first opening end and a second opening end are formed at the opening;

a first connecting piece: is arranged on the first opening end;

a second connecting member: is threadedly coupled to the first connector such that the first connector is coupled to the second open end.

4. The gas flow detection device of an insertion flow meter according to claim 3, wherein: the first opening end is provided with a perforated seat, and the first connecting piece is inserted into the perforated seat; the second opening end is provided with a slot seat, and the first connecting piece is inserted and matched with the slot seat.

5. The gas flow detection device of an insertion flow meter according to claim 4, wherein: the first connecting piece comprises a perforated bolt inserted in the perforated seat and an eccentric handle rotationally connected with a bolt head of the perforated bolt; the second connecting piece is a first nut in threaded connection with the perforated bolt; the screw rod of the perforated bolt is inserted into the slot in the slot seat; and the first nut and the end face of the slot seat form extrusion fit, and the eccentric handle and the end face of the hole seat form extrusion fit.

6. The gas flow detection device of an insertion flow meter according to claim 4, wherein: the first connecting piece comprises a T-shaped bolt inserted in the open hole seat, the end of the T-shaped bolt is inserted in the slot seat, and the second connecting piece is a nut II in threaded connection with the T-shaped bolt; and the nut II is in extrusion press fit with the end face of the hole seat, and the end of the T-shaped bolt is in extrusion press fit with the end face of the slot seat.

7. The gas quantity detection device of the insertion flow meter according to any one of claims 1 to 6, characterized in that: the cannula detection assembly further comprises: and the pressure guide pipe is connected between the flow probe and the airflow roll-out joint.

8. The gas flow detecting device of an insertion flow meter according to any one of claims 1 to 6, wherein: the variable pressure metering assembly comprises: three valve groups communicated with the airflow transfer joint and a differential pressure transmitter connected with the three valve groups.

9. The gas quantity detection device of the insertion flow meter according to claim 1, characterized in that: the quick-connection structure is two PC joints connected to two ends of the flexible pipe, one of the two PC joints is connected with the airflow turning-in joint, and the other PC joint is connected with the airflow turning-out joint.