V-cone sealing structure for target flowmeter

Abstract

The utility model discloses a V cone sealing structure for a target flowmeter, which comprises a display gauge outfit, a sleeve is connected onto the display gauge outfit, the bottom of the sleeve is connected with a sensor base through a locking nut, a sensor body is arranged in the sensor base, and the bottom end of the sleeve is further connected with the sensor body. A flange shell is further arranged on the sensor base, and the bottom of the sensor body is further connected with the flange shell. According to the V-cone sealing structure for the target flow meter, a previous plane sealing mode is changed into a V-cone sealing mode, namely the horn mouth sealing face of the sensor base and the V-cone sealing face of the sensor body, and the V-cone sealing structure for the target flow meter has the advantages of being simple and reliable in structure, resistant to high pressure and high temperature, convenient and easy to assemble, simple in machining, few in working procedure and capable of saving machining cost.

Description

Technical Field

[0001] The utility model relates to the field of V-cone sealing structures of target type flow meters, in particular to a V-cone sealing structure used for target type flow meters. Background Art

[0002] At present, the seals of the target flowmeter sensors and the shell connection parts used in the market mostly adopt concave and convex surface connection, which is convenient for positioning. It is necessary to process the stepped plane groove for placing the sealing ring. At the same time, in order to locate the force direction of the sensor, it is necessary to process the symmetrical grooves at the base connection of the shell tee by a special milling machine (or wire cutting). The sensor seat also needs to process the corresponding boss, which can be meshed with the shell tee base to play the role of fixing the direction. The boss of the sensor seat generally needs to be processed separately by a ring to cut out a boss online. The boss also needs to be firmly fixed to the sensor seat. The sensor needs to be locked first. The boss can be fixed according to the force direction of the sensor. The fixing adopts set screws or direct welding. The production and assembly process is cumbersome and inefficient. In addition, when welding the tee base, it is necessary to be more careful about the tube axis of the shell, that is, the flow direction of the fluid, because the force direction of the sensor must be consistent with the direction of the fluid, otherwise it will cause inaccurate measurement. Once the groove direction of the tee base is accidentally welded in the wrong direction, the entire shell will be directly scrapped.

[0003] In order to solve the above problems, we propose a V-cone sealing structure for a target flowmeter to improve the shortcomings of the existing technology. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a V-cone sealing structure for a target flowmeter. In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a V-cone sealing structure for a target flow meter, comprising a display head, the display head is connected with a sleeve, the bottom of the sleeve is connected with a sensor base through a locking nut, a sensor body is arranged in the sensor base, and the bottom end of the sleeve is also connected to the sensor body, a flange shell is also arranged on the sensor base, and the bottom of the sensor body is also connected to the flange shell.

[0006] Preferably, the sensor body and the sleeve are connected by threads.

[0007] Preferably, the locking nut is inserted into the sleeve and the sensor body and the sensor base are tightly fitted together through the locking nut.

[0008] Preferably, the sealing connection between the sensor body and the flange housing is a V-conical boss sealing surface.

[0009] Preferably, the conical boss sealing surface of the sensor body is directly fitted with the V-conical flare sealing surface of the sensor base.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0011] The previous flat seal is changed to a V-conical seal, that is, the bell-mouth sealing surface of the sensor base and the V-conical sealing surface of the sensor body. The structure is simple and reliable. The V-conical seal has the following advantages: 1. Because it is a hard seal, the flange shell and the sensor body can withstand high pressure and high temperature; 2. The assembly is convenient and simple, and the force direction of the sensor can be ignored during welding and assembly; 3. The processing is simple and there are few steps, without the need to process sealing steps and wire-cut meshing grooves (to locate the force direction of the sensor); 4. The processing cost is saved, and one less boss ring is processed for the positioning direction, and there is no need to separately perform wire cutting (convex and concave grooves) on the sealing fitting parts of the two matching tee bases and the sensor seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic structural diagram of the cutaway casing in the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the casing in the utility model when viewed from above;

[0016] Figure 4 This is a schematic diagram of the structure of the sensor body cut in the utility model;

[0017] Figure 5 It is a schematic structural diagram of a cutaway view of a sensor base in the utility model.

[0018] In the figure: 1. Display head; 2. Casing; 3. Locking nut; 4. Sensor body; 5. Sensor base; 6. Flange shell. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example

[0020] like Figure 1-5As shown, a V-cone sealing structure for a target flowmeter includes a display head 1, a sleeve 2 is connected to the display head 1, the bottom of the sleeve 2 is connected to a sensor base 5 through a locking nut 3, a sensor body 4 is arranged in the sensor base, and the bottom end of the sleeve 2 is also connected to the sensor body 4, a flange shell 6 is also arranged on the sensor base 5, and the bottom of the sensor body 4 is also connected to the flange shell 6, the sensor body 4 and the sleeve 2 are threadedly connected, the locking nut 3 is inserted into the sleeve 2 and the sensor body 4 and the sensor base 5 are tightly fitted together through the locking nut 3, the sealing connection between the sensor body 4 and the flange shell 6 is a V-conical boss sealing surface, the conical boss sealing surface of the sensor body 4 is directly fitted with the V-conical bell mouth sealing surface of the sensor base 5, so that it has the advantages of being resistant to high pressure and high temperature, easy and simple to assemble, simple processing and fewer processes, thereby saving processing costs.

[0021] The principles and advantages of the utility model are as follows: the groove sealing surface with the flange pipe connector is changed into a V-conical trumpet sealing surface (now named as sensor base 5), and the sealing connection between the sensor body 4 and the flange shell 6 is directly processed into a V-conical boss sealing surface, so that the conical boss sealing surface of the sensor body 4 is directly fitted with the V-conical trumpet sealing surface of the sensor base 5, the sensor body 4 and the sleeve 2 are threadedly connected, the locking nut 3 is inserted into the sleeve 2, and the sensor body 4 and the sensor base 5 are tightly fitted together through the locking nut 3, and the pre-tightening force of the locking nut 3 is increased by a wrench to make the two V-conical fitting surfaces (microscopically, line contact) undergo micro-elastic deformation, so that the trumpet sealing surface of the sensor base 5 and the conical boss sealing surface of the sensor body 4 fit more tightly and fill the micro gap between each other to achieve the sealing effect, and adopt a conical sealing method, the structure is simple and reliable, no O-ring is required to be assembled, the metal hard seal is more resistant to high pressure and high temperature media, and it is safer and more reliable.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A V-cone sealing structure for a target flow meter, comprising a display head (1), characterized in that: The display meter head (1) is connected to a sleeve (2), the bottom of the sleeve (2) is connected to a sensor base (5) via a locking nut (3), a sensor body (4) is arranged in the sensor base, and the bottom end of the sleeve (2) is also connected to the sensor body (4), a flange shell (6) is also arranged on the sensor base (5), and the bottom of the sensor body (4) is also connected to the flange shell (6).

2. The V-cone sealing structure for a target flowmeter according to claim 1, characterized in that: The sensor body (4) and the sleeve (2) are connected by threads.

3. The V-cone sealing structure for a target flowmeter according to claim 1, characterized in that: The locking nut (3) is inserted into the sleeve (2), and the sensor body (4) and the sensor base (5) are tightly fitted together through the locking nut (3).

4. The V-cone sealing structure for a target flowmeter according to claim 1, characterized in that: The sealing connection between the sensor body (4) and the flange housing (6) is a V-conical boss sealing surface.

5. The V-cone sealing structure for a target flowmeter according to claim 3, characterized in that: The conical boss sealing surface of the sensor body (4) is directly fitted onto the V-conical bell-mouth sealing surface of the sensor base (5).

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