Pressure transmitter connecting piece for low pressure detection

Abstract

The pressure transmitter connecting piece for low-pressure detection comprises a connecting pipe; the first flange is of an oval structure and is welded to one end of the connecting pipe, and a first through hole corresponding to the connecting pipe is formed in the first flange; the second flange is of a circular structure and is welded to the other end of the connecting pipe, and a second through hole corresponding to the connecting pipe is formed in the second flange. According to the pressure transmitter connecting piece used for low pressure detection, through the mounting structure of the connecting piece, the problem of micro-pressure connection using a high-precision micro-differential pressure basic pressure transmitter measurement reserved port as a flange process interface can be completely solved, accurate pressure measurement can be carried out, and the pressure transmitter connecting piece is suitable for popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to low pressure detection technical field, especially relate to pressure transmitter connecting piece for low pressure detection. BACKGROUND

[0002] With the development of industry and urbanization, the development speed of chemical industry petroleum and other industries, tank area as the important component of these industries, its safety problem arouses people's attention more and more. Tank area is important facility in the whole petrochemical industry, energy supply chain and has huge investment, according to relevant research data, storage tank accident accounts for 74% of refinery and tank area accident, and 12% is listed as major accident. And because dangerous and flammable liquid is often stored in the storage tank, once the leakage, overflow, explosion and other safety incidents occur, the consequence is unbearable to imagine. The safety of tank area is closely related to the monitoring control of tank top pressure.

[0003] According to design pressure, the storage tank can be divided into normal pressure storage tank, low pressure storage tank and pressure storage tank. The storage tank with design pressure less than or equal to 6.9kPa (tank top surface pressure) is low pressure storage tank. The storage tank with design pressure greater than 6.9kPa and less than 0.1MPa (tank top surface pressure) is normal pressure storage tank. The storage tank with design pressure greater than or equal to 0.1MPa (tank top surface pressure) is pressure storage tank.

[0004] The pressure of low pressure storage tank is controlled at 1kPa or less. In order to accurately monitor the tank top pressure, it is necessary to measure the small range and high precision micro pressure transmitter base table, and in the actual working condition, many design package process interface reserve DN40, DN50 and other remote flange specifications. The diaphragm sealing flange is easy to appear zero drift when measuring small pressure. How to directly measure the micro pressure without changing the original interface and solve the connection problem between the micro pressure transmitter base table and the flange during micro pressure measurement is the problem that needs attention at present.

[0005] Therefore, in view of the deficiencies in the prior art, it is necessary to design a pressure transmitter connecting piece for low pressure detection to solve the above problems. UTILITY MODEL CONTENT

[0006] In order to overcome the deficiencies in the prior art, the utility model aims at providing a pressure transmitter connecting piece for low pressure detection.

[0007] In order to achieve the above object and other related objects, the technical scheme provided by the utility model is as follows: a pressure transmitter connecting piece for low pressure detection, comprising:

[0008] A connecting pipe is arranged on the first flange, and the second flange is arranged on the other end of the connecting pipe.

[0009] A first flange is arranged on one end of the connecting pipe, and a first through hole corresponding to the connecting pipe is arranged on the first flange.

[0010] Second flange, the second flange is configured as a circular structure and is welded to the other end of the connecting pipe, and a second through hole corresponding to the connecting pipe is arranged on the second flange.

[0011] The preferred technical scheme is that the first flange is used for fixing a third flange on a butt joint pressure transmitter, and the third flange is consistent with the first flange in specification.

[0012] The preferred technical scheme is that the second flange is used for fixing a fourth flange reserved on a tank top, and the fourth flange is consistent with the second flange in specification.

[0013] The preferred technical scheme is that a stop valve is arranged on the connecting pipe.

[0014] The preferred technical scheme is that a gasket is arranged between the first flange and the third flange, and the gasket is made of polytetrafluoroethylene material.

[0015] The preferred technical scheme is that a metal graphite winding gasket is arranged between the second flange and the fourth flange.

[0016] Due to the above technical scheme, the pressure transmitter connecting piece has the beneficial effects that:

[0017] The pressure transmitter connecting piece for low-pressure detection provided by the present application can completely solve the problem of connecting a micro-pressure with a flange process interface by using a high-precision differential pressure basic type pressure transmitter to measure a reserved port, and can perform accurate pressure measurement, and is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The present application relates to a pressure transmitter connecting piece structure schematic view.

[0019] Fig. 2 The present application relates to a pressure transmitter connecting piece structure schematic view. DETAILED DESCRIPTION

[0020] The following specific embodiments illustrate the embodiments of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosed content.

[0021] Please refer to Figs. 1-2. It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Example:

[0024] like Figs. 1-2 As shown, according to an overall technical concept of the present utility model, a pressure transmitter connector for low pressure detection is provided, comprising:

[0025] Connecting pipe 1;

[0026] A first flange 2 is formed into an elliptical structure and is welded to one end of the connecting pipe 1. The first flange 2 is provided with a first through hole corresponding to the connecting pipe 1;

[0027] The second flange 3 is formed into a circular structure and is welded to the other end of the connecting pipe 1 . The second flange 3 is provided with a second through hole corresponding to the connecting pipe 1 .

[0028] like Figs. 1-2 As shown, in an exemplary embodiment of the present invention, the first flange 2 is used to fix and connect with the third flange 41 on the pressure transmitter 4 , and the specifications of the third flange 41 are consistent with those of the first flange 2 .

[0029] like Figs. 1-2As shown in the utility model of one example embodiment, the second flange 3 is used for fixing the fourth flange 51 reserved on the butt joint tank top 5, and the fourth flange 51 is consistent with the second flange 3 in specification.

[0030] As shown in the utility model of one example embodiment, the first flange 2 and the third flange 41 are provided with a gasket, and the gasket is made of polytetrafluoroethylene material. Figs. 1-2

[0031] As shown in the utility model of one example embodiment, the first flange 2 and the third flange 41 are provided with a gasket, and the gasket is made of polytetrafluoroethylene material. Figs. 1-2 As shown in the utility model of one example embodiment, the second flange 3 and the fourth flange 51 are provided with a metal graphite winding gasket.

[0032] Figs. 1-2 In use, the pressure transmitter 4 is connected to the corresponding first flange 2 of the connecting piece through two single head bolts, and the specification of the bolt is generally (7 / 16-20UNF or M10), and a gasket made of polytetrafluoroethylene material with related dimensions is matched in the middle to realize a tight sealing effect. Then, the second flange 3 of the connecting piece is fixed to the fourth flange 51 reserved on the tank top 5 by using a double head bolt with a related matching specification, and a metal graphite winding gasket with related dimensions is matched in the middle to realize a tight sealing effect. During the installation and use process, attention should be paid to protect the connecting piece to avoid collision.

[0033] Therefore, the utility model has the following advantages:

[0034] The pressure transmitter connecting piece for low pressure detection provided by the utility model can completely solve the problem of connecting the micro pressure of the flange process interface reserved in the mouth measured by the high-precision differential pressure basic type pressure transmitter, and accurate pressure measurement can be carried out, so the utility model is suitable for popularization and use.

[0035] The pressure transmitter connecting piece for low pressure detection provided by the utility model can completely solve the problem of connecting the micro pressure of the flange process interface reserved in the mouth measured by the high-precision differential pressure basic type pressure transmitter, and accurate pressure measurement can be carried out, so the utility model is suitable for popularization and use.

[0036] The above embodiment only illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.​​

Claims

1. Pressure transmitter connection for low pressure detection, characterized in that The utility model relates to a connecting pipe for connecting pressure transmitter and tank top, comprising: a connecting pipe; a first flange, which is an elliptical structure and is welded to one end of the connecting pipe, and has a first through hole corresponding to the connecting pipe; a second flange, which is a circular structure and is welded to the other end of the connecting pipe, and has a second through hole corresponding to the connecting pipe.

2. The pressure transmitter connection for low pressure detection of claim 1, wherein: The first flange is used for fixing a third flange on a butt joint pressure transmitter, and the third flange is consistent in specification with the first flange.

3. The pressure transmitter connection for low pressure detection of claim 1, wherein: The second flange is used for fixing a fourth flange reserved on a tank top, and the fourth flange is consistent in specification with the second flange.

4. The pressure transmitter connection for low pressure detection of claim 1, wherein: A stop valve is arranged on the connecting pipe.

5. The pressure transmitter connection for low pressure detection of claim 2, wherein: A gasket is arranged between the first flange and the third flange, and the gasket is made of polytetrafluoroethylene.

6. The pressure transmitter connection for low pressure detection of claim 3, wherein: A metal graphite winding gasket is arranged between the second flange and the fourth flange.

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