CN210719275U

CN210719275U - Plug-in type anti-blocking wedge-shaped flowmeter

Info

Publication number: CN210719275U
Application number: CN201922050351.4U
Authority: CN
Inventors: 于瀚翔; 王磊; 于坤基
Original assignee: Weihai Rongxin Measurement And Control Technology Co Ltd
Current assignee: Weihai Rongxin Measurement And Control Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-06-09
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a plug-in anti-blocking wedge-shaped flowmeter, it has been solved current flowmeter structural design unreasonable, has easy dirt accumulation and easy wearing and tearing, causes the testing result repeatability poor, and the degree of accuracy is low, can not realize the installation and the dismantlement demand of not stopping the flow, causes the serious technical problem of economic loss, including measuring head and gauge outfit, the upper end of measuring head is connected with the insert tube, and is connected with the gauge outfit through the insert tube, and the measuring head includes measuring pipe and bluff body, and the upper portion of bluff body is for the convex structure that matches with measuring pipe inside wall, and seamless connection; the high-pressure taking port and the low-pressure taking port are respectively arranged on the side walls of the measuring circular tubes at the front end and the rear end of the bluff body; the cross section of the flow blocking body is of a direct triangular cone structure, a first right-angle edge of the flow blocking body is in seamless connection with the inner side wall of the measuring circular tube, a second right-angle edge of the flow blocking body is vertically and downwards arranged on the inner side wall of the measuring circular tube, and the flow blocking body can be widely applied to the technical field of flow meter structural design.

Description

Plug-in type anti-blocking wedge-shaped flowmeter

Technical Field

The utility model relates to a flowmeter structural design technical field especially relates to a bayonet stifled wedge flowmeter that prevents.

Background

Differential pressure flow meters are meters that measure flow based on the differential pressure generated by a flow sensing member installed in a pipe, known fluid conditions, and the geometry of the sensing member and the pipe. The differential pressure flowmeter consists of a primary device (detection part) and a secondary device (differential pressure conversion and flow display instrument). Differential pressure flow meters are generally classified in the form of test pieces, such as orifice plate flow meters, venturi flow meters, and averaging tube flow meters. The secondary installation is various mechanical, electronic and electromechanical integrated differential pressure meters, differential pressure transmitters and flow display and calculation instruments, and the secondary installation is developed into a large class of instruments with high degree of three types (serialization, universalization and standardization) and various specifications. The differential pressure gauge can be used to measure both flow parameters and other parameters (e.g., pressure, level, density, etc.). The averaging pitot tube flowmeter comprises an Annbar, Torbar, Probar, verabar, itabar and the like, and is an insertion type flowmeter which calculates the flow by using the flow velocity of the midpoint of a side pipeline based on a pitot tube speed measurement principle, namely a typical differential pressure type flow sensor.

Differential pressure flow meters have been used successfully in process control and flow metering applications in a wide variety of flow media areas throughout the world over the last hundred years. The earliest differential pressure measurement devices were generated in the forty decades of the eighteenth century after the proposal of bernoulli's theorem, and the flow nozzles, venturi tubes and orifice plates of the marketing world were produced using this principle. Conventional differential pressure flow meters are throttled around the walls of the pipe and fluid flows through the center of the pipe. Until the eighties of the twentieth century, americans proposed a new throttling mode, and used a cone as a throttling element, which was suspended in a fluid pipeline, and the fluid flowed along the pipe wall after being compressed and rectified by the cone at the center of the pipeline, thus overcoming the defects caused by the self-structure of the traditional differential pressure type flowmeter, such as: the flow coefficient is unstable, the linearity is poor, the repeatability is low, the accuracy is low, the dirt accumulation and the abrasion are easy to occur, the measuring range ratio is small, the field installation condition is high, and the like. At present, most of cone differential pressure flowmeters in the market are full-pipe type structures, namely, a full-pipe meter body of a cone throttling element is directly connected with a fluid pipeline, and a pressure guiding pipe is directly led out from the full-pipe meter body. The full-tube type conical differential pressure flowmeter is large in size, heavy in weight, high in price and pressure loss, particularly, a large-caliber flowmeter is prominent, great inconvenience is brought to installation and transportation, comprehensive cost is high, production maintenance can only be stopped when blockage or cone scaling occurs in the case of measuring a sticky medium, and economic loss caused by application cost and production stop is large. At present, the market also has an inserted vortex shedding flowmeter which is afraid of vibration interference, high temperature and dirt sticking, poor in precision and narrow in measuring range.

Among the prior art, although measuring accuracy of bayonet flowmeter improves, the maintenance cost is low, but can not be very convenient dismantle the change and the maintenance to the display to the gauge outfit, long-time use, when the trouble such as damage and reveal can appear easily in the display, just need dismantle gauge outfit maintenance, traditional dismantlement mode, need to stop flowing and just can change the maintenance, take the gauge outfit apart completely, just can take out the display, to its maintenance, can not realize not stopping flowing to change at the line and overhaul the sensor, thus waste time, and the installation is troublesome. The flow stopping maintenance means that the production line needs to be stopped, the production stopping is a great contraindication in the modern production, for example, millions of yuan or even more can be lost when a petrochemical plant stops production for one hour, and the heat supply pipe network not only influences the production, but also influences the normal life of common people. Thus, a high user desire for an on-line replaceable flow meter that is excellent in performance, easy to install, and convenient. Most of the existing flowmeters are required to be mounted and dismounted under the condition of flow breaking, great difficulty is brought to production enterprises, and the existing products under the following conditions are difficult to solve: 1. some continuous production enterprises want to add flow meters on old equipment; 2. the originally used flowmeter is damaged and needs to be replaced; 3. the accuracy decreases over time after the meter is used for a period of time, and the meter is removed and re-tested by a third party certification authority. In these situations, the flow meter can be mounted and dismounted only after the production and the flow of the equipment are stopped and cut off, which brings great loss to the production of enterprises, especially in the economic aspect. In addition, most of traditional flowmeters adopt a pipeline connection mode, the size is large, the weight is heavy, great troubles are brought to transportation and installation, the manufacturing cost is high, the pipeline resistance is large, the economic loss caused by flow-breaking installation and disassembly is large, and the comprehensive operation cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses shortcoming and not enough to exist among the prior art, the utility model provides a have device simple structure ingenious, effectively prevent to take place the jam condition in the use, ensure the degree of accuracy and the accuracy that the flowmeter detected, life is showing and is improving, the installation and the dismantlement method of not stopping flowing, the method is simple, time saving and labor saving, satisfy the demand of not stopping flowing of flowmeter installation and dismantlement process in the present production process, showing and reducing the installation of flowmeter and dismantling the cost, especially be convenient for regularly correct the measuring of flowmeter in the production process, ensure the degree of accuracy and the accuracy that detect, show and improve work efficiency, satisfy the demand that modern production does not stop flowing and overhaul the correction, ensure that the continuity of production goes on, applicable wide-range bayonet anti-blocking wedge flowmeter.

Therefore, the utility model provides an inserted anti-blocking wedge-shaped flowmeter, which comprises a measuring head and a gauge head, wherein the gauge head comprises a pressure detection device and a display screen, and the pressure detection device is electrically connected with the display screen; the upper end of the measuring head is connected with an inserting pipe and is connected with the gauge outfit through the inserting pipe, the measuring head comprises a measuring circular pipe and a flow blocking body, the flow blocking body is fixedly arranged in the measuring circular pipe, and the upper part of the flow blocking body is of a circular arc structure which is matched with the inner side wall of the measuring circular pipe and is in seamless connection with the inner side wall of the measuring circular pipe; the top of the measuring circular tube is also connected with two pressure tapping pipes, namely a high-pressure tapping pipe and a low-pressure tapping pipe, and the corresponding high-pressure tapping port and the corresponding low-pressure tapping port are respectively arranged on the side walls of the measuring circular tube at the front end and the rear end of the bluff body; the cross section of the bluff body is of a direct triangular cone structure, a first right-angle edge of the bluff body is in seamless connection with the inner side wall of the measuring round tube, a second right-angle edge of the bluff body is vertically arranged downwards with the inner side wall of the measuring round tube, and a low-pressure taking opening is further connected with an internal low-pressure guiding tube which is attached to the second right-angle edge and arranged downwards.

Preferably, the length of the second right-angle side of the flow blocking body is larger than the radius of the measuring circular tube, and the length of the internal low-pressure guiding tube is smaller than the radius of the measuring circular tube.

Preferably, the upper parts of the high-pressure sampling pipe and the low-pressure sampling pipe are arranged in the insertion pipe and are connected with a pressure detection device in the gauge outfit at the top end of the insertion pipe.

Preferably, the upper end of the insertion pipe is provided with a first sealing valve, the first sealing valve is fixed on a first sealing flange fixing base welded with the pipeline, and the upper end of the first sealing valve is pressed and fixed through a second sealing flange seat.

Preferably, the upper end of the second sealing flange seat is connected with a flowmeter lifting device, the flowmeter lifting device comprises a flowmeter lifting base, a lifting screw rod and a screw rod lifting handrail, the bottom of the flowmeter lifting base is connected with a joint of the second sealing flange seat, the upper portion of the flowmeter lifting base is connected with the screw rod lifting handrail, the lifting of the lifting screw rod is adjusted by rotating the screw rod lifting handrail, the lifting of the insertion pipe is driven, and the lifting of the measuring head is finally controlled.

Preferably, the meter head is connected above the screw lifting handrail, and the lifting screw between the flowmeter lifting base and the screw lifting handrail is also connected with a self-locking fastening device.

Preferably, the first sealing valve is a rotary ball valve or a plane gate valve; the measuring head is made of stainless steel.

The utility model has the advantages that:

(1) the plug-in anti-blocking wedge-shaped flowmeter which is disassembled and assembled without stopping flow has the advantages that the structure is simple and ingenious, the design is scientific and reasonable, the blocking condition is effectively prevented in the using process, the accuracy and precision of the flowmeter detection are ensured, and the service life is obviously prolonged; use installation convenient operation, labour saving and time saving, can realize accomplishing under the not stop flow operating condition the utility model discloses an installation and the dismantlement of bayonet anti-blocking wedge flowmeter satisfy the production demand that modern production was not stopped to flow and is overhauld, show reduction production cost of maintenance, and ensure the permanent validity of testing result, long service life.

(2) The utility model discloses a bayonet stifled wedge flowmeter's installation and dismantlement method that does not stall, the method is simple, and labour saving and time saving satisfies in the present production process to flowmeter installation and dismantlement process demand that does not stall, is showing the installation that reduces the flowmeter and is dismantling the cost, especially is convenient for regularly to the detection of flowmeter in the production process and corrects, ensures the degree of accuracy and the accuracy that detect, is showing and improves work efficiency, satisfies the demand that modernized production does not stall to overhaul and correct, ensures that the continuity of production goes on, and applicable wide range.

The utility model discloses a bayonet stifled wedge flowmeter's incessant installation method that flows realizes the incessant installation of flowmeter among the whole process, realizes the installation that does not stop flowing on line, and labour saving and time saving is showing and is improving the installation effectiveness and sparingly installing cost, satisfies the demand that does not stop flowing in modern production and installs. Meanwhile, the stable outflow coefficient, high repeatability of detection data results, high accuracy, difficult dirt accumulation and abrasion, long service life and obvious production and installation cost saving are ensured.

The utility model discloses a plug-in type anti-blocking wedge-shaped flowmeter's incessant flow dismantlement method, in the use, can be at any time according to the actual demand the utility model discloses plug-in type anti-blocking wedge-shaped flowmeter's incessant flow dismantlement, labour saving and time saving, maintenance and detection cost is low, and it is regularly right in the production process of being convenient for the utility model discloses plug-in type anti-blocking wedge-shaped flowmeter's detection is corrected, ensures the degree of accuracy and the accuracy that detect, is showing and is improving work efficiency, satisfies modernized production incessant flow and overhauls the demand of.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic diagram of the structure of the measuring head of FIG. 1;

FIG. 3 is a schematic view of the construction of the flow meter lifting device of FIG. 1;

fig. 4 is a schematic structural diagram of the non-stop installation punching process device of the plug-in type anti-blocking wedge-shaped flowmeter of the utility model.

The labels in the figure are: 1. the measuring device comprises a measuring head, 2 a gauge head, 3 an insertion pipe, 4 a measuring circular pipe, 5 a flow blocking body, 6 a high-pressure tapping pipe, 7 a low-pressure tapping pipe, 8 a high-pressure tapping port, 9 a low-pressure tapping port, 10 a second right-angle side, 11 a first right-angle side, 12 a first sealing valve, 13 a pipeline, 14 a first sealing flange fixing base, 15 a second sealing flange seat, 16 a flowmeter lifting base, 17 a lifting screw, 18 a screw lifting handrail, 19 a self-locking type fastening device, 20 pipeline special punching equipment and 21 an internal low-pressure tapping pipe.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention. The method used in the utility model is a conventional method if no special regulation is provided; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.

As shown in fig. 1-3, the utility model provides an inserted anti-blocking wedge-shaped flowmeter, which comprises a measuring head 1 and a gauge head 2, wherein the gauge head 2 comprises a pressure detection device and a display screen, and the pressure detection device is electrically connected with the display screen; the upper end of the measuring head 1 is connected with an inserting tube 3 and is connected with the gauge outfit 2 through the inserting tube 3, the measuring head 1 comprises a measuring circular tube 4 and a flow blocking body 5, the flow blocking body 5 is fixedly arranged inside the measuring circular tube 4, and the upper part of the flow blocking body 5 is of a circular arc structure which is matched with the inner side wall of the measuring circular tube 4 and is in seamless connection with the inner side wall; the top of the measuring circular tube 4 is also connected with two pressure tapping pipes, namely a high-pressure tapping pipe 6 and a low-pressure tapping pipe 7, and a corresponding high-pressure tapping port 8 and a corresponding low-pressure tapping port 9 are respectively arranged on the side walls of the measuring circular tube 4 at the front end and the rear end of the bluff body 5; the cross section of the bluff body 5 is a direct triangular cone structure, a first right-angle side 11 of the bluff body is in seamless connection with the inner side wall of the measuring circular tube 4, a second right-angle side 10 of the bluff body is vertically arranged downwards with the inner side wall of the measuring circular tube 4, and a low-pressure tapping pipe 21 which is attached to the second right-angle side 10 and arranged downwards is further connected to the low-pressure tapping port 9; the low pressure of the second right-angle side 10 of the rear end of the bluff body 5 is got and is pressed mouth 9 and be in vacuum state, can effectively measure the low pressure on the one hand and get and press mouth 9 department pressure, can prevent effectively moreover that it from being blockked up by the fluid, ensures to detect through the accuracy, effectively avoids the high pressure to get to press pipe 6 and low pressure to get to press pipe 7 and takes place to glue dirty condition and take place, makes the detection more permanent.

The length of the second right-angle side 10 of the bluff body 5 is greater than the radius of the measuring round pipe 4, the length of the internal low-pressure-leading pipe 9 is less than the radius of the measuring round pipe 4, the accuracy and precision of detection are further ensured, the low-pressure-leading pipe 7 can be effectively prevented from being stained, and the detection durability is ensured.

The upper parts of the high-pressure sampling pipe 6 and the low-pressure sampling pipe 7 are arranged in the inserting pipe 3 and are connected with a pressure detection device in the gauge outfit 2 at the top end of the inserting pipe 3, so that the real-time effective monitoring of fluid media in the pipeline is realized.

A first sealing valve 12 is mounted at the upper end of the insertion tube 3, and the first sealing valve 12 is a rotary ball valve; the first sealing valve 12 is fixed to a first sealing flange fixing base 14 welded to the pipe 13, and its upper end is pressed and fixed by a second sealing flange seat 15. The upper end of second sealing flange seat 15 is connected with flowmeter elevating gear, flowmeter elevating gear includes flowmeter lift base 16, lifting screw 17, lead screw lift handrail 18, flowmeter lift base 16's bottom is connected with the joint of second sealing flange seat 15, its upper portion is connected with lead screw lift handrail 18, through the lift of rotatory lead screw lift handrail 18 regulation lifting screw 17, drive the lift of intubate 3, the lift of final control measuring head 1, use installation convenient operation, labour saving and time saving, can realize accomplishing under the not stop stream operating condition the utility model discloses an installation and the dismantlement of bayonet anti-blocking wedge flowmeter satisfy the production demand that the modern production was not stopped stream and is overhauld, show reduction production and maintenance cost, and ensure the permanent validity of testing result, long service life.

The top of lead screw lift handrail 18 is connected with gauge outfit 2, still is connected on the lifting screw 17 between flowmeter lift base 16 and the lead screw lift handrail 18 and is equipped with self-locking formula fastener 19, can select fastening and the pine from self-locking formula fastener 19 of relaxing at any time according to actual demand in the use, realizes being fixed in the regulation to lifting screw 17.

The measuring head 1 is made of stainless steel materials, is not easy to rust, keeps the firmness and durability of the whole device structure, is not easy to cause the phenomenon of fluid adhesion, and has long service life.

A non-stop mounting and dismounting method of a plug-in type anti-blocking wedge-shaped flowmeter,

the utility model discloses a plug-in anti-blocking wedge flowmeter's incessant installation process includes:

(1) point selection and fixation: firstly, welding a first sealing flange fixing base 14 of the plug-in type anti-blocking wedge-shaped flowmeter on a process pipeline 13, then connecting and fixing a first sealing valve 12 and the first sealing flange fixing base 14, compressing and fixing the upper end of the first sealing valve through a second sealing flange seat 15, and keeping the valve of the first sealing valve 12 in a closed state;

(2) punching: as shown in fig. 4, after the special pipe perforating equipment 20 is connected and fixed to the first sealing valve 12, the valve of the first sealing valve 12 is opened, the special pipe perforating equipment 20 is started to perform perforating operation on the process pipe 13, and after the perforating operation is completed, the valve of the first sealing valve 12 is closed, and then the special pipe perforating equipment 20 is removed;

(3) installation: after the flow meter lifting device is connected and fixed with the first sealing valve 12 through the second sealing flange seat 15, the valve of the first sealing valve 12 is opened, the lead screw lifting handrail 18 is rotated to adjust the lifting of the lifting screw 17, the lifting screw 17 is slowly screwed downwards to drive the insertion tube 3 to descend, and finally the measuring head 1 is controlled to descend and be installed into the process pipeline 13, and after the flow meter lifting device is rotated to the position and the direction of the measuring head 1 is adjusted: the central axis of a pressure measuring cavity in the measuring circular tube 4 is superposed with the central axis of the process pipeline 13, and a high-pressure tapping port 8 of the measuring circular tube 4 is arranged at the front end of a low-pressure tapping port 9 along the flowing direction of the fluid, so that the tip of a flow blocking body 5 points to the opposite direction of the flowing direction of the fluid; and then the self-locking fastening device 19 on the lifting screw 17 is fastened by bolts, so that the non-stop installation work of the flowmeter is completed.

When a fluid passes through the measuring head 1, a pressure difference is formed at the upstream and the downstream of the bluff body 5, the upstream (at a high-pressure taking port 8) of the tip of the bluff body 5 is PH, the downstream (at a low-pressure taking port 9) is PL, the differential pressure is △ P, △ P is PH-PL, the differential pressure is transmitted to a differential pressure transmitter of a pressure detection device in the gauge head 2 through the high-pressure taking pipe 6 and the low-pressure taking pipe 7, and the flow meter can accurately measure the flow rate of the fluid in a pipeline according to the Bernoulli theorem.

The utility model discloses a plug-in anti-blocking wedge flowmeter's incessant dismantlement process does:

firstly, on the plug-in type anti-blocking wedge-shaped flowmeter which is installed in the step (3), the bolt of the self-locking fastening device 19 on the lifting screw rod 17 is appropriately unscrewed to ensure that the lifting screw rod 17 can rotate, then the screw rod lifting handrail 18 is reversely rotated to rotate the measuring head 1 to the topmost end, namely, after the measuring head is higher than the first sealing valve 12, the valve of the first sealing valve 12 is closed, the fastening bolt of the second sealing flange seat 15 is loosened to finish the non-stop disassembly work of the flowmeter, in the using process, the non-stop disassembly of the plug-in type anti-blocking wedge-shaped flowmeter can be carried out at any time according to the actual requirement, the time and the labor are saved, the maintenance and the detection cost are low, the detection and the correction of the plug-in type anti-blocking wedge-shaped flowmeter are regularly carried out in the production process, the accuracy and the precision of the detection are ensured, the working efficiency, ensuring the continuous production.

To sum up, the utility model discloses a bayonet stifled wedge flowmeter that prevents of dismouting that does not stop flowing, device simple structure is ingenious, effectively prevents to take place the jam condition in the use, ensures the degree of accuracy and the accuracy that the flowmeter detected, and life is showing and is improving. The utility model discloses a bayonet stifled wedge flowmeter's installation and dismantlement method that does not stall, the method is simple, and labour saving and time saving satisfies in the present production process to flowmeter installation and dismantlement process demand that does not stall, is showing the installation that reduces the flowmeter and is dismantling the cost, especially is convenient for regularly to the detection of flowmeter in the production process and corrects, ensures the degree of accuracy and the accuracy that detect, is showing and improves work efficiency, satisfies the demand that modernized production does not stall to overhaul and correct, ensures that the continuity of production goes on, and applicable wide range.

The above is only an embodiment of the present invention, and for example, the first sealing valve 12 is a rotary ball valve or a plane gate valve, which can be implemented in the plug-in type anti-blocking wedge flow meter and the non-stop installation and detachment method thereof.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "middle", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims

1. An insertion type anti-blocking wedge-shaped flowmeter comprises a measuring head and a meter head, wherein the meter head comprises a pressure detection device and a display screen, and the pressure detection device is electrically connected with the display screen; the upper end of the measuring head is connected with an insertion pipe and is connected with the gauge outfit through the insertion pipe, and the measuring head is characterized by comprising a measuring circular pipe and a flow blocking body, wherein the flow blocking body is fixedly arranged in the measuring circular pipe, and the upper part of the flow blocking body is of a circular arc structure which is matched with the inner side wall of the measuring circular pipe and is in seamless connection with the inner side wall of the measuring circular pipe; the top of the measuring circular tube is also connected with two pressure tapping pipes, namely a high-pressure tapping pipe and a low-pressure tapping pipe, and the corresponding high-pressure tapping port and the corresponding low-pressure tapping port are respectively arranged on the side walls of the measuring circular tube at the front end and the rear end of the bluff body; the cross section of the flow blocking body is of a direct triangular cone structure, a first right-angle edge of the flow blocking body is in seamless connection with the inner side wall of the measuring circular tube, a second right-angle edge of the flow blocking body is perpendicular to and downward arranged with the inner side wall of the measuring circular tube, and the low-pressure taking opening is further connected with an internal low-pressure leading tube which is attached to the second right-angle edge and downward arranged.

2. The plug-in type anti-blocking wedge flow meter according to claim 1, wherein the length of the second right-angle side of the flow blocking body is greater than the radius of the measuring circular tube, and the length of the internal low-pressure pipe is less than the radius of the measuring circular tube.

3. The plug-in type anti-blocking wedge flow meter according to claim 1, wherein the upper parts of the high pressure pipe and the low pressure pipe are both arranged in the insertion pipe and are connected with a pressure detection device in a meter head at the top end of the insertion pipe through the insertion pipe.

4. The plug-in type anti-blocking wedge flow meter according to claim 3, wherein the upper end of the plug-in pipe is provided with a first sealing valve, the first sealing valve is fixed on a first sealing flange fixing base welded with the pipeline, and the upper end of the first sealing valve is tightly pressed and fixed through a second sealing flange seat.

5. The plug-in type anti-blocking wedge-shaped flowmeter according to claim 4, wherein a flowmeter lifting device is connected to the upper end of the second sealing flange seat, the flowmeter lifting device comprises a flowmeter lifting base, a lifting screw rod and a screw rod lifting handrail, the bottom of the flowmeter lifting base is connected with the joint of the second sealing flange seat, the upper portion of the flowmeter lifting base is connected with the screw rod lifting handrail, the lifting screw rod is adjusted to lift by rotating the screw rod lifting handrail, the insertion tube is driven to lift, and the lifting of the measuring head is controlled finally.

6. The plug-in type anti-blocking wedge-shaped flowmeter according to claim 5, wherein the gauge outfit is connected above the screw lifting handrail, and a self-locking fastening device is further connected to the lifting screw rod between the flowmeter lifting base and the screw lifting handrail.

7. The plug-in anti-clogging wedge flow meter according to claim 5, wherein said first sealing valve is a rotary ball valve or a flat gate valve; the measuring head is made of stainless steel.