JP4998780B2 - Pressure transmitter - Google Patents

Description

  The present invention relates to a differential pressure / pressure transmitter, and more particularly to a flange of a differential pressure / pressure transmitter.

  The differential pressure / pressure transmitter in the prior art is formed into a horizontal pipe connection type if the pipe from the process is arranged in the horizontal direction, and a vertical pipe connection type if the pipe is arranged in the vertical direction. If the pipe is provided on the bottom surface, the bottom pipe connection type is formed.

  7 and 8 show a horizontal pipe connection type differential pressure / pressure transmitter, a pressure detection unit 11 for converting a high pressure and a low pressure difference of a fluid to be measured from a process into an electric signal, and this The amplifier unit (conversion unit) 12 includes an amplification unit that amplifies the signal generated by the pressure detection unit 11 and generates a detection signal.

  The pressure detection unit 11 has a high-pressure side process pipe connection port 13 that introduces a high-pressure pressure of the fluid to be measured from the process in the right direction in the diagram in the vertical direction with respect to the direction in which the amplifier unit 12 is mounted. A low pressure side flange 14B having a low pressure side process pipe connection port 15 for introducing the pressure of the fluid to be measured from the process, and a high pressure and a low pressure from the high pressure side flange 14A and the low pressure side flange 14B are detected by a diaphragm. The high-pressure side and low-pressure side flanges 14 </ b> A and 14 </ b> B are locked by nuts 16 and bolts 17.

Process connectors 19 are provided at the process pipe connection ports 13 and 15 of the flanges 14A and 14B, and are fixed by bolts 21 to which the pipe 18 is connected.
Such a differential pressure / pressure transmitter is arranged in a dedicated bracket 34 for horizontal arrangement, and has a screw 22 provided in a direction opposite to the process pipe connection port 13 (15). It is configured to be attached to a bracket 34 exclusively for horizontal use.

9 shows a differential pressure / pressure transmitter of a vertical pipe connection type, in which the process pipe connection ports 13 and 15 provided in the high-pressure side and low-pressure side flanges 14A and 14B are provided upward in the drawing. The amplifier unit (conversion unit) 12 is attached to the right in the drawing.
It is configured to be attached to a vertical dedicated bracket 33 with screws 22 provided on the lower side of the flanges 14A and 14B.

  10 shows a differential pressure / pressure transmitter of a bottom pipe connection type, and process pipe connection ports 13 and 15 provided on the high-pressure side and low-pressure side flanges 14A (14B) are provided downward in the drawing. The configuration is such that an amplifier unit (conversion unit) 12 is mounted upward in the figure.

Thus, in the current differential pressure / pressure transmitter piping system, the “horizontal piping connection type” in which the piping 18 is connected from the horizontal direction, the “vertical piping connection type” in which the piping 18 is connected from the vertical direction, There is a connection method such as a “bottom pipe connection type” in which the pipe 18 is connected from the bottom direction, and the flanges 14A (14B) having different shapes are used depending on the direction of the pipe 18.
Further, the shape of the flange 14A (14B) and the installation method are not irrelevant, and mounting brackets 33 and 34 that match the piping 18 mounting method are used.
Japanese Patent Laid-Open No. 2003-227770 (pages 3 to 4 and FIG. 1)

However, in the connection form described in the prior art, there is an advantage that a flange having a shape suitable for each pipe mounting method is selected. On the other hand, many parts are generated on the production line, and many types are available depending on orders. It is necessary to select and assemble the flange and bracket of the shape that matches the order.
On the other hand, at the user site, the handling of the flange changes depending on the piping method, and there is a restriction depending on the piping direction in the case of failure of the equipment in use. It is necessary to prepare.
Therefore, this invention has the subject which must be solved by making it the flange corresponding to each connection method and attachment method with respect to the flange of these different shapes.

  In order to solve the above problems, the differential pressure / pressure transmitter of the present invention is configured as follows.

(1) The pressure transmitter is vertically attached to a flange having a first process pipe connection port to which a pipe for guiding a fluid to be measured from the process is connected, and to the first process pipe connection port of the flange. A pressure transmitter, wherein the flange is provided with a first process pipe on a side opposite to a first process pipe connection port provided in a direction perpendicular to a direction in which the converter is connected. A second process pipe connection port similar to the pipe connection port is provided, and a third process pipe connection port similar to the first process pipe connection port is provided on the opposite side to the direction in which the conversion unit is connected. .
(2) The first process pipe connection port, the second process pipe connection port, and the third process pipe connection port provided in the three directions of the flange are provided with attachment means for attaching to the bracket at the unused process pipe connection port. The pressure transmitter according to (1), wherein the pressure transmitter is provided.

In the present invention, by adopting a flange provided with a process pipe connection port for installing the pipe in three directions other than the one direction for installing the conversion section, the above-mentioned vertical pipe connection type, horizontal pipe connection type, and bottom pipe connection type are used. In any case, the flange can be handled, and the connection block mounting screw (mounting means) also serves as a mounting screw to the bracket as it is, so that it is free from restrictions when mounting to the bracket.
In the production line, all components are common, and the user can install in the optimum direction (posture) without considering the piping method of the existing transmitter and the orientation of the bracket.

  Next, an embodiment of a differential pressure / pressure transmitter according to the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as what was demonstrated by the prior art.

The differential pressure / pressure transmitter of the present invention has a basic configuration of the differential pressure / pressure transmitter shown in FIG. 7 described in the prior art, and is composed of its high-pressure side and low-pressure side flanges 14A and 14B. The pressure detection unit 11 is improved so that process pipe connection ports are provided in any of the three directions except the top direction to which the amplifier unit (conversion unit) 12 is attached.
FIG. 1 shows a configuration in which process piping connection ports are provided in all three directions except for the direction in which the conversion portion is connected among the four directions of the surface of the flange 14, and on the left side in the direction in which the conversion portion is attached. In this configuration, a first process pipe connection port 24, a second process pipe connection port 25 on the right side, and a third process pipe connection port 26 on the lower side are provided.

A process connector 19 for connecting the pipe 18 is attached to any one of the process pipe connection ports 24, 25, and 26, and is locked by a bolt 21 (see FIG. 2). Furthermore, since any one of the first, second, and third process pipe connection ports 24, 25, and 26 is used, the process pipe connection port that is not used is attached to be attached to a bracket as an attachment means. A screw 29 (see FIG. 2) is provided.

Further, a vent plug 31 and a drain plug 32 used in the case of the horizontal pipe connection type and the bottom pipe connection type are provided on the side surface with respect to the surface provided with the process pipe connection ports 24, 25 and 26.
The process pipe connection ports 24, 25, and 26 that are not used for connecting the pipe 18 that guides the fluid to be measured from the process are configured to be sealed with plugs.

  In the flange having the above-described configuration, piping can be performed using the same flange even if the mounting direction of the piping changes.

  2 shows a method of attaching the flange 14 in the case of a vertical pipe connection type. A process connector 19 for connecting the pipe 18 to the first process pipe connection port 24 is attached and fixed with a bolt 21. The vertical bracket 33 is fixed with screws 29 provided on the third process pipe connection port 26 side.

  FIG. 3 shows a method of attaching the flange 14 in the case of a horizontal pipe connection type. A process connector 19 for connecting the pipe 18 to the second process pipe connection port 25 is attached and fixed with a bolt 21. The horizontal bracket 34 is fixed with screws 29 provided on the first process pipe connection port 24 side.

  FIG. 4 shows a flange attachment method in the case of the bottom face pipe connection type. A process connector 19 for connecting the pipe 18 to the third process pipe connection port 26 is attached and fixed with a bolt 21.

  FIG. 5 shows that the flange 14 in the case of the vertical pipe connection type is attached to the horizontal bracket 34, and the process connector 19 for connecting the pipe 18 to the first process pipe connection port 24 is attached. It fixes with the volt | bolt 21, and it fixes to the horizontal bracket 34 with the screw | thread 29 provided in the 3rd process piping connection port 26 side.

  6 is attached to the vertical bracket 33 with respect to the flange 14 in the case of the horizontal pipe connection type, and a process connector 19 for connecting the pipe 18 to the second process pipe connection port 25 is mounted. It fixes with the volt | bolt 21, and it fixes to the bracket 33 for perpendicular | vertical with the screw | thread 29 provided in the 3rd process piping connection port 26 side.

  As described above, by adopting the flange 14 provided with the process pipe connection ports 24, 25, 26 for installing the pipe 18 in three directions other than the one direction for installing the conversion unit 12, a vertical pipe connection type, a horizontal pipe connection The flange 14 is applicable to both the shape and the bottom pipe connection type.

  By adopting a flange with a process piping connection port that installs the piping in one direction other than the one direction where the conversion unit is installed, it can be used in any of the vertical piping connection type, horizontal piping connection type, and bottom piping connection type. It becomes a possible flange, and the connection block mounting screw also serves as a mounting screw to the bracket as it is, providing a differential pressure / pressure transmitter that is free from restrictions when mounting to the bracket.

It is a front view of the flange in the differential pressure / pressure transmitter of the present invention. It is explanatory drawing which showed the mode in the case of a vertical piping connection type. It is explanatory drawing which showed the mode in the case of a horizontal piping connection type. It is explanatory drawing which showed the mode in the case of a bottom face piping connection type. It is explanatory drawing which showed a mode that it arrange | positioned to the bracket for horizontal in the case of a vertical piping connection type | mold similarly. It is explanatory drawing which showed a mode that it arrange | positioned to the bracket for vertical | vertical in the case of a horizontal piping connection type | mold similarly. It is the perspective view which showed the flange of the differential pressure / pressure transmitter. It is explanatory drawing which showed the flange of the horizontal piping connection type in a prior art. It is explanatory drawing which showed the flange of the vertical piping connection type in a prior art. It is explanatory drawing which showed the flange of the bottom pipe connection type in a prior art.

Explanation of symbols

11 Pressure detection unit 12 Amplifier unit (conversion unit)
13 Process piping connection port 14 Flange 14A High pressure side flange 14B Low pressure side flange 15 Process piping connection port 18 Piping 19 Process connector 22 Screw 24 First process piping connection port 25 Second process piping connection port 26 Third process piping connection port 29 Screw 31 Vent plug 32 Drain plug 33 Vertical bracket 34 Horizontal bracket

Claims (2)

A flange having a first process pipe connection port to which a pipe for guiding a fluid to be measured from the process is connected;
A conversion portion attached in a direction perpendicular to the first process pipe connection port of the flange;
A pressure transmitter comprising:
The flange is provided with a second process pipe connection port similar to the first process pipe connection port on the opposite side of the first process pipe connection port provided in a direction perpendicular to the direction in which the converter is connected. A pressure transmitter having a third process pipe connection port similar to the first process pipe connection port provided on the opposite side of the direction in which the converter is connected. Of the first process pipe connection port, the second process pipe connection port, and the third process pipe connection port provided in the three directions of the flange, an attachment means for attaching to the bracket is provided at an unused process pipe connection port. The pressure transmitter according to claim 1.

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