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Constant-temperature and constant-pressure inflation method and device of diaphragm capsule for temperature controller

A technology of constant temperature and pressure, thermostat, applied in container filling methods, equipment loaded into pressure vessels, gas/liquid distribution and storage, etc., can solve problems that are not conducive to ensuring product accuracy and quality, and achieve simple operation, The effect of ensuring product quality and improving measurement accuracy

Inactive Publication Date: 2012-11-28
平顶山市联立机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of the materials used in different bellows, bellows filled with the same amount of working fluid may have different temperature sensitivities, which is not conducive to ensuring the accuracy and quality of the product

Method used

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  • Constant-temperature and constant-pressure inflation method and device of diaphragm capsule for temperature controller

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The constant temperature and constant pressure filling method of the bellows working medium for the thermostat is as follows:

[0021] Step 1. Put the bellows in the incubator, and clamp the capillary of the bellows on the bellows fixture, and adjust the temperature in the incubator to 40°C;

[0022] Step 2. Connect the capillary of the membrane box to the vacuum pump, start the vacuum pump to vacuum the inside of the membrane box, and the vacuum degree is 30Pa;

[0023] Step 3: After vacuuming, cut off the connection path between the capillary of the bellows and the vacuum pump, and connect the capillary with the air storage tank through the pressure regulator. Use the pressure regulator to adjust the inflation pressure of the air tank to 0.4MPa to inflate the bellows. Inflation ends when the pressure equalizes;

[0024] Step 4: Seal the bellows to complete the filling of the bellows with working fluid.

Embodiment 2

[0026] The constant temperature and constant pressure filling method of the bellows working medium for the thermostat is as follows:

[0027] Step 1. Put the bellows in the incubator, and clamp the capillary of the bellows on the bellows fixture, and adjust the temperature in the incubator to 60°C;

[0028] Step 2. Connect the capillary of the membrane box to the vacuum pump, start the vacuum pump to vacuum the inside of the membrane box, and the vacuum degree is 50Pa;

[0029] Step 3: After vacuuming, cut off the connection path between the capillary of the bellows and the vacuum pump, and connect the capillary with the air storage tank through the pressure regulator. Use the pressure regulator to adjust the inflation pressure of the air tank to 0.6MPa to inflate the bellows. Inflation ends when the pressure equalizes;

[0030] Step 4: Seal the bellows to complete the filling of the bellows with working fluid.

Embodiment 3

[0032] The constant temperature and constant pressure filling method of the bellows working medium for the thermostat is as follows:

[0033] Step 1. Put the bellows in the incubator, and clamp the capillary of the bellows on the bellows fixture, and adjust the temperature in the incubator to 50°C;

[0034] Step 2. Connect the capillary of the bellows to the vacuum pump, start the vacuum pump to vacuum the inside of the bellows, and the vacuum degree is 40Pa;

[0035] Step 3: After vacuuming, cut off the connection path between the capillary of the bellows and the vacuum pump, and connect the capillary to the air storage tank through the pressure regulator. Use the pressure regulator to adjust the inflation pressure of the air tank to 0.5MPa to inflate the bellows. Inflation ends when the pressure equalizes;

[0036] Step 4: Seal the bellows to complete the filling of the bellows with working fluid.

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Abstract

The invention discloses a constant-temperature and constant-pressure inflation method of a diaphragm capsule for a temperature controller, which relates to a filling technology of a diaphragm capsule working medium for the temperature controller. The inflation method comprises the following steps of: putting the diaphragm capsule into a constant temperature cabinet and adjusting the temperature to 40-60 DEG C; communicating a capillary tube of the diaphragm capsule with a vacuum pump and vacuumizing the inside of the diaphragm capsule; after vacuumizing, communicating the capillary tube with an air storage tank through a pressure regulator to inflate the diaphragm capsule and stopping inflation when the pressure is balanced; and when the diaphragm capsule is sealed, finishing filling the diaphragm capsule working medium. A fixture head arranged on a diaphragm capsule clamp in the constant temperature cabinet of the inflation device is communicated with a cavity in the diaphragm capsule fixture; and one end of the cavity is connected with a vacuum pump, and the other end of the cavity is communicated with the air storage tank. By adopting the method, the manufactured diaphragm capsule has the same temperature sensitivity, the measuring accuracy of the diaphragm capsule is enhanced and the produce quality is ensured. By adopting the inflation device, the diaphragm capsule can beeasily inflated rapidly, thus the working efficiency is greatly improved.

Description

technical field [0001] The invention relates to a filling technology for a bellows working medium for a temperature controller, in particular to a constant temperature and pressure inflation method and device for a bellows for a temperature controller. Background technique [0002] The bellows is a sensitive element on the temperature controller. The temperature change can be converted by measuring the deformation of the bellows by converting the volume of the working medium in the bellows that expands when heated to its own deformation. In the manufacturing process of the bellows, a capillary connected with the internal cavity is provided on the bellows, after the working medium is filled into the bellows through the capillary, the capillary is cut off and sealed at the same time. Commonly used working fluids are heat transfer oil and alcohol, and gas is also used as the working medium at present, but no matter what kind of working fluid is used, the filling method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C5/00
Inventor 刘红晓郭建坡李彦召刘强王广芳
Owner 平顶山市联立机电有限公司