JPS59216025A - Wax element type remote temperature detector and transmitter - Google Patents

Abstract

PURPOSE:To generate an air pressure signal with high precision by transducing the temperature of fluid whose temperature is to be measured into mechanical displacement, and transmitting it to an air pressure transducer at a remote point as the flow displacement of uncompressed fluid. CONSTITUTION:A diaphragm 32 is wound and fixed while clamped between the external end flange 29 of a guide cylinder 16 and the stepped end surface 31 of a capsule 30. The capsule 30 is charged with wax 33 which incorporates metallic powder such as copper powder having good thermal conductivity to constitute a temperature sensitive wax element. When the diaphragm 32 deforms owing to the thermal expansion of the wax 33, that is transmitted to a plunger 35 through hard rubber 38 for diaphragm protection and a rod 39 to displace the uncompressed fluid 34 by as much as the wax 33.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a system for transmitting temperature detection signals of fluids such as cooling water, vortex, oil, etc. of marine diesel engines, refrigerators, etc. to an air pressure converter for automatic temperature adjustment. This invention relates to a positive element type remote temperature detection and transmission device.

Figure 1 shows a conventional device that utilizes the thermal expansion of kerosene.
Take the protective tube 1 of the temperature measuring part (=temperature measuring @3 which is airtightly fixed in the fluid to be measured with the J fitting 2, and a thermal expansion Ik such as kerosene or mercury is sealed inside the protective tube I as a temperature sensitive moon) is fixed, and the linear displacement due to the volume expansion of the expanding liquid is applied to the temperature 5114 node 6 through the dedicated pipe 4 and the capillary flexible pipe 5.7
is a grand punkin, and 8 is a drop plug. Temperature adjustment section 6
In , the thermal expansion -/1M expansion introduced through the capillary corrugated tube 5 is converted into a displacement by the Bourdon tube, and by this displacement the air pressure fed from the tube 9 is controlled to fall, and from the tube 10 to 1); j. Sends a pneumatic signal corresponding to thermal expansion. The opening degree idM of a valve (not shown) is determined by the air pressure signal.
The flow rate of the temperature-measuring fluid is controlled by controlling the temperature-measuring fluid, thereby keeping the temperature-measuring fluid at a constant temperature. 1■ is an indicating thermometer.

However, the amount of linear expansion due to volumetric thermal expansion of rosin and mercury is as low as about 1 cm for a temperature change of 100°C.Therefore, conventional equipment requires a complex Bourdon structure, 2 strokes and It's disadvantageous in terms of maintenance. -Narrow force J
etc.) It is difficult to adjust the automatic temperature controller for the fluid inside the room due to the location.Since the temperature is often 11, the automatic temperature controller should be installed at a location away from the temperature measuring section. It will be done.

Therefore, the object of the present invention is to use wax as a temperature-sensitive shrine in the temperature measuring part, extract the dog thermal expansion in the phase transition temperature range between the same phase and the liquid phase as a linear displacement, and calculate this displacement. The pressure is transmitted to the automatic ^1.11 degree adjustment part through the non-pressure filling fk of the connection confession, and the air pressure signal is generated without using a Solton tube or heros, etc. This is a one-piece element type temperature distribution system. An object of the present invention is to provide a detection and transmission device.

The present invention uses a diaphragm to close one side of a capsule filled with 12 soks as a temperature sensor, and to compensate for the displacement of the diaphragm that occurs in response to the temperature of the surrounding fluid to be measured.
(iii) transmitting the displacement of the plunger to the plunger of the first cylinder filled with the fluid, connectingly passing through the cylinder and, together with the connecting pipe, during the plunging of the second cylinder of the pneumatic conversion section filled with the incompressible fluid; The air pressure converter is operated by the displacement.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Illustrated embodiments of the invention will be described below.

FIG. 2 shows a temperature measuring section, in which a receiving metal 13 is fixed to a flow pipe 12 for the fluid to be measured, and a flange 15 of a holding cylinder 14 is bolted to this. The holding f314 protrudes into the flow pipe 12, and the guide cylinder 16 is screwed into the tip of the holding f314 and fixed thereto.

The holding cylinder 14 has a center hole 7 that is approximately the same length as one thread in the guide cylinder 16, and its lower half 81 has a small diameter. Fix by screwing.Enlarged holes 20.21 are provided in two stages at the bottom 01:"l" of the holding cylinder 14, and the screw-in collar 22 of the cylinder 18 is inserted into the hole 20.
Then, in the hole 21, screw the cap nut 23 into the threaded part 24 at the bottom of the cylinder 18 to remove the cylinder 18.
Seal the bottom end of. Neshi E protruding from Fukuro I-23
To i325 (add 1 point to 26 and add 2 bags)
The capillary tube 27, which was soldered to the 3. It is connected to the capillary tube 50 of the AIIL melon control section.

Plan 1) Sandwich the die flam 32 between the outside 01" 11 norange 29 of 'JfI'fj I G and the stepped part v1 old h131 of the capsule 30, wrap the capsule 30 around the two flanges and fix it at the 111 end, and secure it inside the capsule 30. Wax 3 mixed with gold 1+, 6W) such as copper 4'31, which has good heat transfer properties.
3 is filled with yellow to form a temperature-sensitive Wanx element. Waxes generally have a range of phase transition temperatures between the condensate and liquid phases, e.g. 10mm for +i degree change
Wax 33 has a thermal expansion property sufficient to cause a linear displacement of 1.5 mm, and the control temperature of the fluid to be measured falls within the range of 11.2 mm transition temperature. shall be.

The cylinder 8, the Geatpilary tube 27, and the capillary flexible tube 28 are filled with an incompressible fluid 34 such as Ge II sin or mercury, and the cylinder 18 is sealed with a plunger 35.

36.37 is an O-ring and a puncture amplifier ring.

When the diaphragm 32 is deformed due to the thermal expansion of the wax 33, this deformation is transmitted to the plunger 35 via the comb 38 and rod 39, causing the wax 33 and the non-pressure fluid 34 to Almost the same amount of displacement is obtained.

Fig. 3 shows a white J/7A degree 6114 section Uli, and a nozzle flapper type pneumatic transducer 42 is fixed to the wall with a metal bolt L40 and a bolt 41, and a bolt 43 is attached to the transducer 42. The upper end of the support cylinder 45 is screwed into the fixed metal 44 fixed by the screws.The lower half of the support cylinder 45 ♀III tf=
A cylinder 47 in part 4 part 6 part 2 is fixed with the same structure as the first cylinder I8, and a cap nut 48 and a threaded part 49 are attached to the lower end of the cylinder 47 to the first cylinder 18. Connect the gear pillar pipe 50 and connect the cavity cap 50 to the gear pillar flexible pipe 28.

The second cylinder 47 is also sealed by a plunger 51 and is filled with an incompressible fluid 34, and the displacement of the plunger 35 is controlled by the plunger 5 through the incompressible fluid 34.
The information will be communicated to the engineering department.

A pair of spring holders 53 are vertically spaced apart by a spring 52 in the support cylinder 45; At the same time, the upper and lower splash receivers 53 are moved WjJIi, and the lower part 7ii, i of the rack 55 protruding from the pneumatic transducer 112 is brought into contact with the plunger 51 through the shank 54 11. iZ, the displacement of the plunger 51 activates a mechanism in the pneumatic converter 42 via the rack 55, and the temperature of the fluid to be measured is controlled by the pneumatic pressure generated by the re-nozzle 56. It is.

The pneumatic transducer 42 is a patent application filed by the applicant in 1983-zo3.
Although one horse was presented as an o7 success story, it is not directly related to the present invention, so a detailed explanation will be omitted.

As described above, the present invention converts the temperature of the measured fluid into a mechanical displacement by utilizing the thermal expansion property of wax within the phase transition temperature range, and then converts the temperature of the measured fluid into a mechanical displacement using a cylinder and a plunger. Since the flow displacement of the generated incompressible fluid is transmitted to the pneumatic pressure transducer at a remote point, the transmission displacement area is large, and it can be as high as 17 degrees without using a full-length tube or herose for the pneumatic pressure transducer. In addition to being able to generate a pneumatic signal, the non-pressure tiit 1! l: It has the effect of easily creating a dog flow displacement even at 1111 pressure in the fluid, and is automatic/11! It is possible to provide an L degree 1iJ joint at the i'ill grate position from the engine etc. to make the adjustment [;;r] easier.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a conventional device showing the temperature measuring section in 4iijliJi' music, Fig. 21 is a vertical view of the temperature measuring section of an embodiment of the present invention, and Fig. 13 is also an automatic temperature control system. It is a Wi side view of the main parts of the section. 18...First shilling 28...Connecting pipe 30
...Capsule 32...Diaphragm 3
4... Incompressible fluid 35... Plunger 4
7...Second shilling 51...Pufunsha's agent Patent attorney utilization) 1, - 1 other person Figure 1 Figure 2 Procedural amendment June 22, 1980 Director General of the Patent Office Yoto Wakasugi 1, Indication of the incident: Patent application 1986-0899202,
Title of the invention Wax element type remote temperature detection device 3, Relationship with the person making the amendment case Applicant Name Teikoku Piston Ring Co., Ltd. 4, Agent Address: 105

Claims (1)

[Claims] Treatment of surroundings/l! The displacement that occurs in the diaphragm closing one side of the sock-filled capsule in response to the temperature of the IJ hot fluid is transmitted to the plunger of the first cylinder filled with compressible fluid, and the displacement of the plunger is transferred to the plunger of the first cylinder filled with compressible fluid. communicates with the cylinder through a connecting pipe, and together with the connecting pipe, the air pressure &lJC'ml filled with the incompressible fluid is transmitted to the plunge of the second cylinder, and the displacement of the plunger operates the pneumatic pressure converter. A sock element type remote temperature detection transmission device.