CN212158699U

CN212158699U - Wedge-shaped flowmeter

Info

Publication number: CN212158699U
Application number: CN202021187795.9U
Authority: CN
Inventors: 马世勋
Original assignee: Jinan Shizhong Automation Instrument Co ltd
Current assignee: Jinan Shizhong Automation Instrument Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-12-15
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a wedge-shaped flowmeter, including surveying buret, survey buret front end is provided with the rectifier, surveys the detachable wedge that is connected with of buret middle part, surveys buret and is connected with positive pressure-taking pipe and negative pressure-taking pipe, and positive pressure-taking pipe is located the wedge front side, and negative pressure-taking pipe is located the wedge rear side, and positive pressure-taking pipe and negative pressure-taking pipe and survey buret outside all overlaps and be equipped with steam heat preservation pipe, last steam inlet valve and the steam outlet valve of being provided with of steam heat preservation pipe, positive, negative pressure-taking pipe and heat preservation pipe all link to each other with pressure-taking flange, surveys buret and heat preservation pipe. The flowmeter can realize the accurate measurement of a medium containing a catalyst at low flow velocity and high viscosity, is easy to crystallize, contains corrosivity, is wear-resistant, prevents crystallization, can filter particles and can accurately measure the internal flow parameter of a pipe.

Description

Wedge-shaped flowmeter

Technical Field

The utility model relates to a flow detection field especially relates to a wedge flowmeter in pipeline.

Background

For the flow measurement of complex liquids in pipelines, such as coal tar, sulfuric acid, and particularly pitch, because the flow rate of the medium is slow, and particles and even possibly crystallized fluid can exist in the medium, when the medium is encountered, if the suitability of the temperature of the fluid in the pipeline cannot be ensured, crystallization or blockage can be formed, and the flowmeter is damaged. And in media containing catalysts such as black water, recycle oil and the like, the abrasion of the flowmeter is serious, and even the abrasion of the pipe wall of the flowmeter and a throttling element is serious, so that leakage is caused, and a serious production accident is caused.

Disclosure of Invention

To the above problem, the utility model discloses a wedge-shaped flowmeter, this flowmeter can realize low velocity of flow, high consistency, and easy crystallization contains the corrosivity, and the medium that contains the catalyst carries out the precision measurement, and the device is wear-resisting, prevents crystallization, but filter particle, but the internal flow parameter of accurate survey buret.

A wedge-shaped flowmeter comprises a measuring pipe, wherein a rectifier is arranged at the front end of the measuring pipe, the middle part of the measuring pipe is detachably connected with a wedge block, the measuring pipe is connected with a positive pressure taking pipe and a negative pressure taking pipe, the positive pressure taking pipe is positioned on the front side of the wedge block, the negative pressure taking pipe is positioned on the rear side of the wedge block, steam heat-insulating pipes are sleeved outside the positive pressure taking pipe, the negative pressure taking pipe and the measuring pipe, a steam inlet valve and a steam outlet valve are arranged on the steam heat-insulating pipes, the positive pressure taking pipe, the negative pressure taking pipe and the heat-insulating pipes are connected with a pressure taking flange, and the measuring pipe and the heat;

and the inner wall of the measuring tube, the wedge-shaped block and the rectifier are all covered with tungsten carbide coatings.

Preferably, the pressure taking flange is connected with a differential pressure transmitter.

Preferably, a first sealing gasket is arranged between the differential pressure transmitter and the pressure taking flange.

Preferably, the steam heat-preservation pipe is connected with the steam inlet valve and the steam outlet valve through threads, and a second sealing gasket is arranged at the joint.

The utility model has the advantages that:

1. the wedge-shaped flowmeter is used for measuring complex media through double-flange pressure measurement in a mode different from that of a conventional throttling device, the flange is directly connected with the differential pressure transmitter, and a process that a primary valve, a three-valve set and the like possibly cause blockage or unsmooth measurement is omitted in the middle. The anti-blocking performance is quite excellent, and the anti-blocking device has a very good effect on the measurement of fluid media with particles.

2. Through the mode of the jacket with the heat preservation, the medium is subjected to heat preservation through steam, so that crystallization and solidification are avoided, and the measurement requirement is met. Particularly, the medium in the positive and negative pressure tapping pipes is relatively static and has no fluidity. Therefore, crystallization is caused, and the medium in the pressure sampling pipe is effectively prevented from crystallizing by adopting the steam heat preservation of the pressure sampling pipe and the heat preservation pipe.

3. For the media such as black water, recycle oil and the like containing catalysts, the flowmeter is seriously abraded and even leaks, the inner wall of the measuring tube, the wedge-shaped block and the rectifier are all covered with tungsten carbide coatings, the abrasion resistance and the hardness of the measuring tube and the wedge-shaped block reach the strength which can not be abraded by the media, and the problem of abrasion resistance of special media is solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view B-B of FIG. 1;

in the figure: 1. differential pressure transmitter, 2, positive pressure taking flange, 3, negative pressure taking flange, 4, positive pressure taking pipe, 5, negative pressure taking pipe, 6, positive pressure taking pipe steam heat preservation pipe, 7, negative pressure taking pipe steam heat preservation pipe 8, wedge, 9, survey buret, 10, screw nut, 11 pipe coupling flange, 12, steam heat preservation pipe, 13, steam inlet valve, 14 steam outlet valve, 15, rectifier.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it should be understood that the terms "inside", "outside", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The utility model discloses a wedge flowmeter as shown in fig. 1-2, this flowmeter include horizontal surveying pipe 9, survey the buret front end and be provided with rectifier 15 for fluid rectification in the geminate transistors prevents that turbulent flow from influencing measurement accuracy. The detachable wedge 8 that is connected with of survey buret mid portion, this wedge is connected with the screw after the position in surveying the buret is confirmed, and this kind of connected mode can realize setting up the wedge of equidimension and appearance in surveying the buret fast, conveniently carries out the measurement under the different work condition to the fluid under the multiple condition. The inner wall of the measuring tube, the wedge-shaped block and the rectifier are all covered with tungsten carbide coatings, so that the measuring tube has high wear resistance, the hardness of the measuring tube and the wedge-shaped block can reach the strength which can not be worn by a medium, and the problem of wear resistance of a special medium is solved.

The positive pressure taking pipe and the negative pressure taking pipe 5 are respectively located on the front side and the rear side of the wedge block, the positive pressure taking pipe and the negative pressure taking pipe are sleeved outside the positive pressure taking pipe and the steam heat preservation pipe 6, the negative pressure taking pipe and the negative pressure taking pipe are sleeved outside the negative pressure taking pipe and the steam heat preservation pipe 7, the steam heat preservation pipe and the steam outlet valve are sleeved outside the measuring pipe 12, a steam inlet valve 13 and a steam outlet valve 14 are arranged on the steam heat preservation pipe, the steam heat preservation pipe and the steam inlet valve and the steam outlet valve are connected through threads. The medium in the positive and negative pressure sampling pipes is relatively static and has no fluidity, so that crystallization is easily caused.

Positive pressure-taking pipe 4 and positive pressure-taking pipe steam insulating pipe 6 are connected to positive pressure-taking flange 2 jointly, and negative pressure-taking pipe 5 and negative pressure-taking pipe steam insulating pipe 7 are connected to negative pressure-taking flange 3 jointly, and positive pressure-taking flange and negative pressure-taking flange communicate with differential pressure transmitter 1 jointly, are provided with first sealed pad between differential pressure transmitter and the pressure-taking flange.

Survey buret 9 and insulating tube 12 and link to each other with pipeline flange jointly, survey buret and insulating tube and all link to each other with pipeline flange, pipeline flange passes through screw nut with the pipeline that awaits measuring and is connected.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The wedge-shaped flowmeter is characterized by comprising a measuring pipe, wherein a rectifier is arranged at the front end of the measuring pipe, a wedge block is detachably connected with the middle part of the measuring pipe, the measuring pipe is connected with a positive pressure taking pipe and a negative pressure taking pipe, the positive pressure taking pipe is positioned on the front side of the wedge block, the negative pressure taking pipe is positioned on the rear side of the wedge block, steam heat-insulating pipes are sleeved outside the positive pressure taking pipe, the negative pressure taking pipe and the measuring pipe, a steam inlet valve and a steam outlet valve are arranged on the steam heat-insulating pipes, the positive pressure taking pipe, the negative pressure taking pipe and the heat-insulating pipes are connected with a pressure taking flange, and the measuring pipe and the heat-;

2. The wedge flowmeter of claim 1 wherein said pressure flange has a differential pressure transmitter attached thereto.

3. The wedge flowmeter of claim 2 wherein a first seal is disposed between said differential pressure transmitter and said pressure flange.

4. The wedge-shaped flowmeter as claimed in claim 1, wherein the steam insulation pipe is in threaded connection with the steam inlet valve and the steam outlet valve, and a second sealing gasket is arranged at the joint.