JPH0412437Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a heat retention structure in a pressure receiving capsule in which a flange and a main body are integrated.

<Conventional technology> A pressure receiving capsule with an integrated main body and flange is
Used in direct contact with the fluid to be measured. There are various types of fluids to be measured, ranging from high temperature to low temperature.
The sealed liquid filled in the pressure capsule expands and contracts when subjected to temperature changes from these fluids to be measured, and this is transmitted to the detector via a capillary tube connected to the main body, causing a temperature error. For this reason, means for keeping the pressure capsule warm and cooling it are required. One possible method for providing these means inside the main body is to provide heat-insulating holes in the periphery of the main body, but the holes for bolt attachment get in the way, making machining difficult, and so far, no one with this structure has been able to do so. None. There is also a method of providing a heat retaining means on the outer periphery of the pressure receiving capsule, but this method has the disadvantage of increasing the overall size.

<Problems to be solved by the invention> The technical problem to be solved by the invention is to realize an internal heat-retaining structure that is easy to process and has a good heat-retaining effect in a flange-integrated pressure capsule. .

<Means for solving the problem> The configuration of the present invention is that a pressure receiving diaphragm is attached to the center of one side of the main body that is integrated with the flange, and a center hole communicating with the chamber behind the pressure receiving diaphragm is connected to the other side of the main body. In a flange-integrated pressure receiving capsule, which is provided from the side, a capillary tube is connected to the center hole, and an incompressible fluid is sealed in the chamber and the capillary tube, this A V-shaped hole is formed in the main body, parallel to both side surfaces of the main body, and avoiding the center hole and the mounting bolt hole, and the tips of each hole are connected near the center of the main body, and the hole is formed on the circumferential surface of the main body. The reason is that a cooling or heat-retaining medium is allowed to flow into these holes through the two provided openings.

<Operation> The technical means described above operates as follows. That is,
Remove the bolt mounting hole and the center hole of the pressure receiving diaphragm from the circumferential surface of the main body and straighten the hole.
It is easy to process because all you have to do is make holes in the book. In addition, since the cooling and heat-retaining medium poured through the opening provided on the circumferential surface of the main body is discharged through the V-shaped hole to the center of the pressure capsule, cooling and heat-retaining of the sealed liquid can be achieved. Can be done effectively.

<Examples> Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an apparatus according to an embodiment of the present invention. FIG. 2 is a sectional view of the apparatus according to the embodiment of the present invention taken along the line A--A in FIG. In the figure, 1 is a main body integrated with a flange. 2 is a pressure receiving diaphragm attached to the center of one side of the main body 1; 3a to 3h;
is a bolt mounting hole provided on the periphery of the main body,
4 is a central hole that communicates the chamber behind the pressure receiving diaphragm 2 with the other side of the main body 1, and 5 is a capillary tube connected to this hole. Incidentally, an incompressible fluid is sealed in the chamber and the capillary tube.

In Figure 1, the part 6 indicated by the dotted line
a and 6b are holes 3 for attaching bolts from the peripheral surface of the main body.
between c and 3b, as well as bolt mounting holes 3e,
3f is a hole provided inside the main body 1 of the pressure receiving capsule, avoiding the center hole 4, and these ends are connected at the center of the main body 1 to form a V-shaped hole. The cooling and heat-retaining medium flows through an opening 6c or 6d provided on the peripheral surface of the main body, and is discharged through the opening 6d or 6d.

<Effects> According to the present invention, the heat insulation holes provided in the main body are formed by removing the bolt mounting hole and the center hole of the pressure receiving diaphragm from the circumferential surface of the main body, and forming two straight holes. Since it is only provided, processing is easy, and the cooling and heat-insulating medium poured through the opening provided on the circumferential surface of the main body is discharged through the V-shaped hole to the center of the pressure receiving capsule. Therefore, the sealed liquid can be effectively cooled and kept warm.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the apparatus according to the present invention, and FIG. 2 is a cross-sectional view of the apparatus according to the present invention taken along the line A--A in FIG. 1...Main body, 2...Pressure receiving diaphragm, 3a~
3h...Center hole, 5...Capillary tube, 6
a, 6b...hole, 6c, 6d...opening.

Claims (1)

[Scope of utility model registration request] A pressure receiving diaphragm is attached to the center of one side of the main body integral with the flange, a center hole communicating with the chamber behind the pressure receiving diaphragm is provided from the other side of the main body, and a capillary tube is connected to this center hole, In the flange-integrated pressure receiving capsule in which an incompressible fluid is sealed in the chamber and the capillary tube, from two places around the main body,
In this main body, V-shaped holes are formed parallel to both side surfaces of the main body, avoiding the center hole and the mounting bolt hole, and having their tips connected near the center of the main body, and forming V-shaped holes parallel to the main body periphery. A heat-retaining type pressure-receiving capsule in which a cooling or heat-retaining medium is allowed to flow through two openings provided in the hole.