阅读说明：本技术 一种嵌入式半剖面内衬套管流量计 (Embedded half section neck bush flowmeter ) 是由 唐陈一郎 禹继波 吴育宁 于 2019-10-24 设计创作，主要内容包括：本发明公开了一种嵌入式半剖面内衬套管流量计,包括流量计本体和内衬套管节流元件,所述内衬套管节流元件包括内衬套管及楔形节流件,内衬套管的内壁及楔形节流件的表面均设有耐磨喷涂层。加工时,可先对内衬套管和楔形节流件分别进行表面喷涂耐磨涂层,然后将内衬套管和楔形节流件进行组合连接制成内衬套管节流元件,再将内衬套管节流元件套入流量计本体内。喷涂时,喷枪可通过两个取压孔和一个半剖面楔形孔进行热喷涂,可以保证喷涂涂层的质量。该结构方便对流道及楔形节流元件表面喷涂耐磨涂层,避免喷涂时存在的涂层不均匀、粘接强度差、涂层容易脱落等质量问题,从而提高流量计的耐磨、耐腐蚀性能,延长了流量计的使用寿命,节省使用成本。(The invention discloses an embedded type half-section lining sleeve flowmeter which comprises a flowmeter body and a lining sleeve throttling element, wherein the lining sleeve throttling element comprises a lining sleeve and a wedge-shaped throttling piece, and wear-resistant spraying layers are arranged on the inner wall of the lining sleeve and the surface of the wedge-shaped throttling piece. During processing, the surfaces of the lining sleeve and the wedge-shaped throttling piece are respectively sprayed with wear-resistant coatings, then the lining sleeve and the wedge-shaped throttling piece are combined and connected to form the lining sleeve throttling element, and then the lining sleeve throttling element is sleeved into the flowmeter body. During spraying, the spray gun can perform thermal spraying through the two pressure measuring holes and the half-section wedge-shaped hole, so that the quality of a sprayed coating can be ensured. The structure is convenient for spraying the wear-resistant coating on the surfaces of the flow channel and the wedge-shaped throttling element, and quality problems of uneven coating, poor bonding strength, easy falling-off of the coating and the like existing in the spraying process are avoided, so that the wear resistance and corrosion resistance of the flowmeter are improved, the service life of the flowmeter is prolonged, and the use cost is saved.)

1. An embedded type half-section inner bushing flow meter is characterized by comprising a flow meter body (1) and an inner bushing throttling element (2),

the flowmeter body (1) comprises a measuring pipe (11), connecting flanges (12) are arranged at two ends of the measuring pipe (11), and through holes of the connecting flanges (12) are communicated with the measuring pipe (11); the side wall of the measuring pipe (11) is provided with two pressure taking ports (13), the upper side of each pressure taking port (13) is provided with a pressure taking flange (14), and a central hole of each pressure taking flange (14) is communicated with the pressure taking port (13);

liner sleeve throttling element (2) are equipped with two pressure taking holes and a half section wedge hole (22) including the liner sleeve (21) of cover locating in surveying buret (11) on the lateral wall of liner sleeve (21), half section wedge hole (22) are located two and are got between the pressure hole and with pressure taking hole position in same one side of liner sleeve (21), are equipped with wedge throttle spare (23) in half section wedge hole (22), and wedge throttle spare (23) are semi-circular along liner sleeve (21) pipe diameter radical section shape, are V-arrangement along liner sleeve (21) pipe axial section shape, and the inner wall of liner sleeve (21) and the surface of wedge throttle spare (23) all are equipped with wear-resisting spray coating (24).

2. The embedded half-section liner casing flowmeter of claim 1, wherein the liner casing (21) is in multiple segments, and adjacent segments are connected by welding.

3. The embedded type half-section liner pipe flowmeter according to claim 2, wherein the liner pipe (21) is three-section, and comprises a positive pressure taking section (211), a throttling section (212) and a negative pressure taking section (213) which are connected in sequence, pressure taking holes are respectively arranged on the positive pressure taking section (211) and the negative pressure taking section (213), the throttling section (212) is provided with a half-section wedge-shaped hole (22), and a wedge-shaped throttling piece (23) is arranged in the half-section wedge-shaped hole (22).

4. The embedded half-section liner flowmeter according to claim 3, wherein the wedge-shaped orifice (23) is provided in a half-section wedge hole (22) and welded to the liner (21).

5. The embedded half-section liner casing flowmeter according to claim 4, wherein the included angles between the half-section wedge-shaped hole (22) and the wedge-shaped throttling element (23) are both 90 degrees, and the lower end (231) of the wedge-shaped throttling element (23) is an arc surface or a plane.

6. The embedded half-section liner casing flowmeter of claim 3, wherein the pressure tapping hole of the negative pressure tapping section (213) is provided with a spraying window (214).

7. The embedded half-section liner casing flowmeter according to claim 1, wherein both ends of the measuring pipe (11) are welded to the connection flanges (12), respectively, the inner diameter of the liner casing (21) is equal to the inner diameter of the through hole of the connection flange (12), and annular gaskets (25) are provided between both ends of the liner casing (21) and the connection flanges (12).

8. The embedded half-section liner casing flowmeter according to claim 7, wherein the inner wall of the measuring pipe (11) and the outer wall of the inner liner casing (21) are provided with mutually matching screw threads, and the measuring pipe (11) and the inner liner casing (21) are connected in a spirally nested manner by the screw threads.

9. The embedded half-section liner casing flowmeter according to claim 7, wherein the liner casing (21) is a straight pipe with a wall thickness of 5-10 mm, and the length of the liner casing (21) is 5-10 mm shorter than the measuring pipe (11).

10. The embedded half-section liner casing flowmeter of any one of claims 1 to 9, characterized by being made by:

firstly, processing a wedge-shaped throttling piece (23), and spraying a wear-resistant spraying layer (24) on the surface of the wedge-shaped throttling piece;

processing a positive pressure tapping section (211), a throttling section (212) and a negative pressure tapping section (213), spraying an abrasion-resistant spraying layer on the inner surface of the positive pressure tapping section, then welding and connecting the positive pressure tapping section, the throttling section and the negative pressure tapping section in sequence to form a lining sleeve (21), spraying an abrasion-resistant spraying layer (24) at the joint of the lining sleeve (21) through a spraying window (214), welding the spraying window on the lining sleeve (21), placing a wedge-shaped throttling piece (23) in a half-section wedge-shaped hole (22), and welding the wedge-shaped throttling piece and the lining sleeve (21);

the side wall of the measuring pipe (11) is provided with two pressure measuring holes, and the lining sleeve (21) is sleeved in the measuring pipe (11);

placing annular sealing gaskets (25) at two ends of the lining sleeve (21), connecting the connecting flanges (12) to two ends of the measuring pipe (11) in a welding mode, finally welding a pressure taking port (13) on the measuring pipe (11), and welding a pressure taking flange (14) at the upper side of the pressure taking port (13).

Technical Field

The invention belongs to the technical field of flowmeters, and particularly relates to an embedded type half-section liner casing flowmeter.

Background

The wedge-shaped flowmeter is a novel throttling differential pressure type flow measuring instrument and is mainly used for measuring the flow of media such as high-viscosity heavy oil, dirt, particle-containing liquid and the like.

Disclosure of Invention

The invention aims to provide an embedded type half-section lining sleeve flowmeter, which is convenient for spraying a wear-resistant coating on the surfaces of a flow passage and a wedge-shaped throttling element and avoids the quality problems of uneven coating, poor bonding strength, easy falling off of the coating and the like during spraying, thereby improving the wear resistance and corrosion resistance of the flowmeter.

In order to achieve the purpose, the invention provides the following technical scheme:

an embedded type half-section inner lining sleeve flowmeter comprises a flowmeter body and an inner lining sleeve throttling element,

the flowmeter body comprises a measuring pipe, connecting flanges are arranged at two ends of the measuring pipe, and through holes of the connecting flanges are communicated with the measuring pipe; the side wall of the measuring tube is provided with two pressure taking ports, the upper sides of the pressure taking ports are provided with pressure taking flanges, and the central holes of the pressure taking flanges are communicated with the pressure taking ports;

interior bushing pipe throttling element locates the interior bushing pipe of measuring tube including the cover, is equipped with two on the bushing pipe's the lateral wall and gets and press hole and a half section wedge hole, half section wedge hole locate two get between the pressure hole and with get and press the same one side that the hole lies in the bushing pipe, be equipped with wedge throttling element in half section wedge hole, wedge throttling element is semi-circular along the radial cross-section shape of bushing pipe, is the V-arrangement along bushing pipe axial cross-section shape, and bushing pipe's inner wall and wedge throttling element's surface all are equipped with the wear-resisting spraying layer.

The embedded type half-section inner bushing throttling element is sleeved in the flowmeter body, when the flowmeter is processed, the inner bushing throttling element can be processed firstly, namely, the surfaces of the inner bushing and the wedge-shaped throttling element are respectively sprayed with wear-resistant coatings, then the inner bushing and the wedge-shaped throttling element are combined and connected to form the inner bushing throttling element, and then the inner bushing throttling element is sleeved in the flowmeter body. During spraying, the spray gun can perform thermal spraying through the two pressure measuring holes and the half-section wedge-shaped hole, so that the quality of a sprayed coating can be ensured. The structure is convenient for spraying the wear-resistant coating on the surfaces of the flow channel and the wedge-shaped throttling element, and quality problems of uneven coating, poor bonding strength, easy falling-off of the coating and the like existing in the spraying process are avoided, so that the wear resistance and corrosion resistance of the flowmeter are improved, the service life of the flowmeter is prolonged, and the use cost is saved.

Preferably, the lining sleeve is in a plurality of sections, and adjacent sections are connected through welding.

Preferably, the lining sleeve is three sections, namely a positive pressure taking section, a throttling section and a negative pressure taking section which are connected in sequence, the positive pressure taking section and the negative pressure taking section are respectively provided with a pressure taking hole, the throttling section is provided with a half-section wedge-shaped hole, and a wedge-shaped throttling piece is arranged in the half-section wedge-shaped hole. This structure is convenient to be respectively to the positive pressure section of getting, throttle section, negative pressure section of getting and wedge throttling element surface spraying wear-resisting coating, then will cut off and carry out the secondary spraying to connecting the position after connecting, further improves coating degree of consistency and bonding strength, prevents that the coating from droing to further improve flowmeter's wear-resisting, corrosion resisting property.

Preferably, the wedge-shaped throttling element is arranged in the half-section wedge-shaped hole and is welded with the inner lining sleeve.

Preferably, the included angles between the half-section wedge-shaped hole and the wedge-shaped throttling piece are both 90 degrees, and the lower end part of the wedge-shaped throttling piece is an arc surface or a plane. The included angles between the half-section wedge-shaped hole and the wedge-shaped throttling element are equal, so that the half-section wedge-shaped hole and the wedge-shaped throttling element are connected in a seamless mode, and the connection is more stable and firm; the included angle is 90 degrees, so that the measurement accuracy is ensured, and the impact and the abrasion of the fluid on the wedge-shaped throttling element are reduced as much as possible; the lower end part of the throttling element is designed to be a plane or an arc surface, so that the abrasion phenomenon of the sharp corner at the bottom can be prevented.

Preferably, a spraying window is arranged at the pressure measuring hole of the negative pressure measuring section. And a spraying window is arranged at the pressure tapping hole position of the negative pressure tapping section so as to facilitate the spray head of the spraying equipment to enter the pipeline for spraying. When spraying, the spray gun can perform secondary thermal spraying on the welding connection part through the spraying window, so that the quality of a sprayed coating can be further ensured.

Preferably, both ends of the measuring pipe are respectively welded with the connecting flange, the inner diameter of the inner lining sleeve is equal to that of the through hole of the connecting flange, and annular sealing gaskets are arranged between both ends of the inner lining sleeve and the connecting flange.

Preferably, the inner wall of the measuring pipe and the outer wall of the inner lining sleeve are provided with mutually matched threads, and the measuring pipe and the inner lining sleeve are in spiral nested connection through the threads.

Preferably, the lining sleeve is a straight pipe with the wall thickness of 5-10 mm, and the length of the lining sleeve is 5-10 mm shorter than that of the measuring pipe.

Preferably, the preparation method comprises the following steps:

firstly, processing a wedge-shaped throttling piece, and spraying an abrasion-resistant spraying layer on the surface of the wedge-shaped throttling piece;

processing the positive pressure tapping section, the throttling section and the negative pressure tapping section, spraying an abrasion-resistant spraying layer on the inner surface of the positive pressure tapping section, welding the positive pressure tapping section, the throttling section and the negative pressure tapping section in sequence to form an inner lining sleeve, spraying an abrasion-resistant spraying layer on the joint of the inner lining sleeve through a spraying window for the second time, welding the spraying window on the inner lining sleeve, placing the wedge-shaped throttling piece in the half-section wedge-shaped hole, and welding the wedge-shaped throttling piece with the inner lining sleeve;

thirdly, two pressure measuring holes are formed in the side wall of the measuring pipe, and the inner bushing is sleeved in the measuring pipe;

placing annular sealing gaskets at two ends of the lining sleeve, connecting the connecting flanges to two ends of the measuring pipe in a welding mode, finally welding a pressure taking opening on the measuring pipe, and welding a pressure taking flange on the upper side of the pressure taking opening.

The invention has the beneficial effects that: the embedded type half-section inner bushing throttling element is sleeved in the flowmeter body, when the flowmeter is processed, the inner bushing throttling element can be processed firstly, namely, the surfaces of the inner bushing and the wedge-shaped throttling element are respectively sprayed with wear-resistant coatings, then the inner bushing and the wedge-shaped throttling element are combined and connected to form the inner bushing throttling element, and then the inner bushing throttling element is sleeved in the flowmeter body. During spraying, the spray gun can perform thermal spraying through the two pressure measuring holes and the half-section wedge-shaped hole, so that the quality of a sprayed coating can be ensured. The structure is convenient for spraying the wear-resistant coating on the surfaces of the flow channel and the wedge-shaped throttling element, and quality problems of uneven coating, poor bonding strength, easy falling-off of the coating and the like existing in the spraying process are avoided, so that the wear resistance and corrosion resistance of the flowmeter are improved, the service life of the flowmeter is prolonged, and the use cost is saved.

Furthermore, the embedded type half-section inner bushing pipe flowmeter of the invention has the advantages that the inner bushing pipe is designed into a multi-section structure, if the inner bushing pipe is three-section, the structure is convenient for respectively spraying wear-resistant coatings on the surfaces of the positive pressure taking section, the throttling section, the negative pressure taking section and the wedge-shaped throttling element, then secondary spraying is carried out on the connecting part after the partition is connected, the coating uniformity and the bonding strength are further improved, the coating is prevented from falling off, and the wear resistance and the corrosion resistance of the flowmeter are further improved; the included angle between the half-section wedge-shaped hole and the wedge-shaped throttling element is equal, so that the half-section wedge-shaped hole and the wedge-shaped throttling element are connected in a seamless mode, the connection is more stable and firm, the included angle is 90 degrees, the measurement accuracy is guaranteed, the impact and the abrasion of fluid on the wedge-shaped throttling element are reduced as far as possible, the lower end portion of the throttling element is set to be a plane or an arc surface, and the abrasion phenomenon of a sharp corner at the bottom can be prevented; and a spraying window is arranged at the pressure tapping hole of the negative pressure tapping section so as to facilitate the spray head of the spraying equipment to enter the pipeline for spraying. When spraying, the spray gun can perform secondary thermal spraying on the welding connection part through the spraying window, so that the quality of a sprayed coating can be further ensured.

Drawings

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is an axial cross-sectional view of the inner liner throttling element of FIG. 1;

FIG. 3 is a radial cross-sectional view taken along A-A of FIG. 2;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: 1-body, 11-measuring tube, 12-connecting flange, 13-pressure taking port, 14-pressure taking flange, 2-inner bushing throttling element, 21-inner bushing, 211-positive pressure taking section, 212-throttling section, 213-negative pressure taking section, 214-spraying window, 22-half section wedge-shaped hole, 23-wedge-shaped throttling element, 24-wear-resistant spraying layer, 25-annular sealing gasket

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.