A rubber pad deflation component collection and analysis device and method

Abstract

The present invention discloses a rubber pad degassing component collection and analysis device and method. The device includes: a first rubber pad tooling fixture, a second rubber pad tooling fixture, a constant temperature water bath, a first sampler, a second sampler, a vacuum gauge, a liquid nitrogen bottle, a liquid nitrogen cold trap, a vacuum pump unit, and a helium mass spectrometer leak detector. After opening all the valves in the device, evacuating the air through the vacuum pump unit, and confirming that there is no leak point in the device through the helium mass spectrometer leak detector, measure the degassing components of the rubber pad inside the rubber pad tooling fixture; turn on the constant temperature water bath to heat the rubber pad tooling fixture; sample the degassing components of the rubber pad inside the rubber pad tooling fixture respectively through the sampler; remove the sampler and its corresponding valve, use a mass spectrometer to analyze the non-liquefiable gas in the sampler, disassemble the sampler and observe. If there is an oily component in the sampler, it is determined that the rubber pad will volatilize the oily component during the vacuum drying process.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber gasket outgassing component collection and analysis, and particularly to an apparatus and method for collecting and analyzing rubber gasket outgassing components. Background Art

[0002] In the industrialization of special equipment, rubber gaskets are a common application component. During the use of rubber gaskets, some oily components are present in the collected outgassing components of the rubber gaskets. These oily components are initially considered to have volatilized from the rubber gaskets during the vacuum drying process of the rubber gaskets, but this result is only a guess by the staff. Therefore, during the vacuum drying process of the rubber gaskets, it is necessary to collect the outgassing components of the rubber gaskets and analyze the collected components to determine whether the rubber gaskets will volatilize oily components during the vacuum drying process. Summary of the Invention

[0003] The object of the present invention is to provide an apparatus and method for collecting and analyzing rubber gasket outgassing components in view of the technical defects existing in the prior art.

[0004] The technical solution adopted to achieve the object of the present invention is as follows:

[0005] An apparatus for collecting and analyzing rubber gasket outgassing components, the apparatus comprising: a first rubber gasket tooling fixture, a second rubber gasket tooling fixture, a constant temperature water bath, a first sampler, a second sampler, a vacuum gauge, a liquid nitrogen bottle, a liquid nitrogen cold trap, a vacuum pump unit, and a helium mass spectrometer leak detector, wherein:

[0006] The first rubber gasket tooling fixture and the second rubber gasket tooling fixture are respectively provided with 1 to 15 rubber gaskets inside, water connectors are provided on the surface, and heating tapes are respectively wound around the surfaces of the first rubber gasket tooling fixture and the second rubber gasket tooling fixture;

[0007] The water connectors provided on the surfaces of the first rubber gasket tooling fixture and the second rubber gasket tooling fixture are respectively connected to the constant temperature water bath through metal pipes or hoses, a first valve is installed on the first rubber gasket tooling fixture, and a second valve is installed on the second rubber gasket tooling fixture;

[0008] The first sampler is connected to the first rubber gasket tooling fixture, the second sampler is connected to the second rubber gasket tooling fixture, and connectors are respectively installed on the first sampler and the second sampler for connecting to the vacuum gauge; a third valve is installed on the first sampler, and a fourth valve is installed on the second sampler;

[0009] The liquid nitrogen bottle is arranged below the first sampler and the second sampler for quickly cooling the first sampler and the second sampler;

[0010] One end of the liquid nitrogen cold trap is connected to the first rubber pad tooling and the second rubber pad tooling, and the other end is respectively connected to a vacuum pump unit and a helium mass spectrometer leak detector. A fifth valve and a sixth valve are provided on the liquid nitrogen cold trap.

[0011] In the above technical solution, the first rubber pad tooling and the second rubber pad tooling are in the form of a cylinder with a diameter of 180 - 200 mm.

[0012] In the above technical solution, the material of the rubber pad is 9520 material or 7766 material.

[0013] In the above technical solution, the diameter of the water joint is 20 - 25 mm and the height is 15 - 25 mm.

[0014] In the above technical solution, the diameters of the first valve and the second valve are 4 mm - 5 mm.

[0015] In the above technical solution, the sampler is of U-shaped structure with a diameter of 5 - 10 mm and can accommodate 0.5 - 10 g of collected samples.

[0016] In the above technical solution, the diameters of the third valve and the fourth valve are 3 - 10 mm valves.

[0017] In the above technical solution, the liquid nitrogen bottle can accommodate 0.05 - 1 L of liquid nitrogen.

[0018] A method for collecting and analyzing the outgassing components of a rubber pad, the method comprising:

[0019] Step 1: Open all the valves in the rubber pad outgassing component collection and analysis device, perform a vacuum pumping operation through the vacuum pump unit, and after confirming that there are no leak points in the device through the helium mass spectrometer leak detector, start collecting and analyzing the outgassing components of the rubber pads inside the first rubber pad tooling and the second rubber pad tooling.

[0020] Step 2: Turn on the constant temperature water bath to heat the first rubber pad tooling and the second rubber pad tooling.

[0021] Step 3: Sample the outgassing components of the rubber pads inside the first rubber pad tooling and the second rubber pad tooling respectively through the first sampler and the second sampler.

[0022] Step 4: Remove the first sampler and the second sampler and their corresponding valves, use a mass spectrometer to analyze the non-liquefiable gases in the first sampler and the second sampler, and then disassemble the first sampler and the second sampler to observe whether there are oily components. If there are oily components in the first sampler and the second sampler, it is determined that the rubber pad will volatilize oily components during the vacuum drying process.

[0023] In the above technical solution, in step 3, the first sampler and the second sampler are used to sample the outgassing components of the rubber pads inside the first rubber pad tooling and the second rubber pad tooling respectively. The sampling process includes:

[0024] Step 3.1, when the heating time of the first rubber pad tooling and the second rubber pad tooling meets the laboratory requirements, close the first valve and the second valve to stop evacuating the first rubber pad tooling and the second rubber pad tooling;

[0025] Step 3.2, when the pressure coefficient of the vacuum gauge meets the test sampling requirements, close the third valve and the fourth valve;

[0026] Step 3.3, quickly cool the first sampler and the second sampler with a liquid nitrogen bottle to liquefy the condensable substances in the samples.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] The outgassing component collection and analysis device for rubber pads of the present invention can determine whether oily components will volatilize during the vacuum drying process of rubber pads. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The structure schematic diagram of the outgassing component collection and analysis device for rubber pads of the present invention is shown.

[0030] Figure 2 The structure schematic diagram of the tooling of the present invention is shown.

[0031] In the figure: V1 - the first valve, V2 - the second valve, Vd3 - the third valve, Vd4 - the fourth valve, V5 - the fifth valve, V6 - the sixth valve. DETAILED DESCRIPTION OF THE INVENTION

[0032] The following further describes the present invention in detail with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] Embodiment 1

[0034] An outgassing component collection and analysis device for rubber pads, see Figure 1 , the device includes: a first rubber pad tooling, a second rubber pad tooling, a constant temperature water bath, a first sampler, a second sampler, a vacuum gauge, a liquid nitrogen bottle, a liquid nitrogen cold trap, a vacuum pump unit, and a helium mass spectrometer leak detector, wherein:

[0035] See Figure 2, there are 1 to 15 rubber pads respectively arranged inside the first rubber pad tooling fixture and the second rubber pad tooling fixture, a water joint is arranged on the surface, and heating tapes are respectively wound and arranged on the surfaces of the first rubber pad tooling fixture and the second rubber pad tooling fixture; the first rubber pad tooling fixture and the second rubber pad tooling fixture are in the form of a cylinder, with a diameter of 180 to 200 mm; the material of the rubber pad is 9520 material or 7766 material; the diameter of the water joint is 20 to 25 mm, and the height is 15 to 25 mm.

[0036] The water joints arranged on the surfaces of the first rubber pad tooling fixture and the second rubber pad tooling fixture are respectively connected with a constant temperature water bath through a metal pipe or a hose, a first valve is installed on the first rubber pad tooling fixture, and a second valve is installed on the second rubber pad tooling fixture; the diameters of the first valve and the second valve are 4 mm to 5 mm.

[0037] The first sampler is connected with the first rubber pad tooling fixture, the second sampler is connected with the second rubber pad tooling fixture, and connectors are respectively installed on the first sampler and the second sampler for connecting with a vacuum gauge; the sampler is of a U-shaped structure, with a diameter of 5 to 10 mm and can accommodate 0.5 to 10 g of collected samples; a third valve is installed on the first sampler, and a fourth valve is installed on the second sampler; the diameters of the third valve and the fourth valve are 3 to 10 mm valves.

[0038] The liquid nitrogen bottle is arranged below the first sampler and the second sampler for quickly cooling the first sampler and the second sampler; the liquid nitrogen bottle can accommodate 0.05 to 1 L of liquid nitrogen.

[0039] One end of the liquid nitrogen cold trap is connected with the first rubber pad tooling fixture and the second rubber pad tooling fixture, and the other end is respectively connected with a vacuum pump unit and a helium mass spectrometer leak detector, and a fifth valve and a sixth valve are arranged on the liquid nitrogen cold trap.

[0040] A method for collecting and analyzing the outgassing components of a rubber pad, the method comprising:

[0041] Step 1, fully open the valves in the rubber pad outgassing component collection and analysis device, perform a vacuum pumping operation through a vacuum pump unit, and after confirming that there are no leakage points in the device through a helium mass spectrometer leak detector, start collecting and analyzing the outgassing components of the rubber pads inside the first rubber pad tooling fixture and the second rubber pad tooling fixture;

[0042] Step 2, turn on the constant temperature water bath to heat the first rubber pad tooling fixture and the second rubber pad tooling fixture;

[0043] Step 3, respectively sample the outgassing components of the rubber pads inside the first rubber pad tooling fixture and the second rubber pad tooling fixture through the first sampler and the second sampler;

[0044] Step 4: Remove the first sampler and the second sampler and their corresponding valves, analyze the non-liquefiable gas in the first sampler and the second sampler using a mass spectrometer, and then disassemble the first sampler and the second sampler to check for the presence of oily components. If there are oily components in the first sampler and the second sampler, it is determined that the rubber gasket will volatilize oily components during the vacuum drying process.

[0045] Further, in step 3, the first sampler and the second sampler are used to sample the outgassing components of the rubber gaskets inside the first rubber gasket tooling and the second rubber gasket tooling respectively. The sampling process includes:

[0046] Step 3.1: When the heating time of the first rubber gasket tooling and the second rubber gasket tooling meets the laboratory requirements, close the first valve and the second valve to stop evacuating the first rubber gasket tooling and the second rubber gasket tooling.

[0047] Step 3.2: When the pressure coefficient of the vacuum gauge meets the test sampling requirements, close the third valve and the fourth valve.

[0048] Step 3.3: Rapidly cool the first sampler and the second sampler using a liquid nitrogen bottle to liquefy the condensable substances in the samples.

[0049] The above is an exemplary description of the present invention. It should be noted that without departing from the core of the present invention, any simple deformation, modification, or equivalent substitution that can be made by those skilled in the art without creative labor falls within the protection scope of the present invention.

Claims

1. A rubber pad deflation component collection and analysis device, characterized in that, The device includes: a first rubber pad tooling fixture, a second rubber pad tooling fixture, a constant temperature water bath, a first sampler, a second sampler, a vacuum gauge, a liquid nitrogen bottle, a liquid nitrogen cold trap, a vacuum pump unit, and a helium mass spectrometer leak detector, where: Inside the first rubber pad tooling fixture and the second rubber pad tooling fixture, there are respectively 1 to 15 rubber pads, water connectors are arranged on the surface, and heating tapes are respectively wound around the surfaces of the first rubber pad tooling fixture and the second rubber pad tooling fixture; The water connectors arranged on the surfaces of the first rubber pad tooling fixture and the second rubber pad tooling fixture are respectively connected to the constant temperature water bath through metal pipes or hoses, a first valve is installed on the first rubber pad tooling fixture, and a second valve is installed on the second rubber pad tooling fixture; The first sampler is connected to the first rubber pad tooling fixture, the second sampler is connected to the second rubber pad tooling fixture, and connectors are respectively installed on the first sampler and the second sampler for connecting to the vacuum gauge; a third valve is installed on the first sampler, and a fourth valve is installed on the second sampler; The liquid nitrogen bottle is arranged below the first sampler and the second sampler for quickly cooling the first sampler and the second sampler; One end of the liquid nitrogen cold trap is connected to the first rubber pad tooling fixture and the second rubber pad tooling fixture, the other end is respectively connected to the vacuum pump unit and the helium mass spectrometer leak detector, and a fifth valve and a sixth valve are arranged on the liquid nitrogen cold trap.

2. The device according to claim 1, characterized in that, The first rubber pad tooling fixture and the second rubber pad tooling fixture are in the form of a cylinder with a diameter of 180 to 200 mm.

3. The device according to claim 1, characterized in that, The material of the rubber pad is 9520 material or 7766 material.

4. The device according to claim 1, characterized in that The water connector has a diameter of 20 to 25 mm and a height of 15 to 25 mm.

5. The device according to claim 1, characterized in that The diameters of the first valve and the second valve are 4 mm to 5 mm.

6. The device according to claim 1, characterized in that The sampler is of a U-shaped structure with a diameter of 5 to 10 mm and can accommodate 0.5 to 10 g of collected samples.

7. The device according to claim 1, characterized in that The diameters of the third valve and the fourth valve are 3 to 10 mm valves.

8. The device according to claim 1, characterized in that, The liquid nitrogen bottle can accommodate 0.05 to 1 L of liquid nitrogen.

9. An analysis method of the rubber pad deflation component acquisition and analysis device according to any one of claims 1-8, characterized in that, The method includes: Step 1, fully open the valves in the rubber pad outgassing component collection and analysis device, perform a vacuum pumping operation through the vacuum pump unit, and after confirming that there are no leak points in the device through the helium mass spectrometer leak detector, start collecting and analyzing the outgassing components of the rubber pads inside the first rubber pad tooling fixture and the second rubber pad tooling fixture; Step 2, turn on the constant temperature water bath to heat the first rubber pad tooling fixture and the second rubber pad tooling fixture; Step 3, respectively sample the outgassing components of the rubber pads inside the first rubber pad tooling fixture and the second rubber pad tooling fixture through the first sampler and the second sampler; Step 4, remove the first sampler, the second sampler and their corresponding valves, use a mass spectrometer to analyze the non-liquefiable gases in the first sampler and the second sampler, and then disassemble the first sampler and the second sampler to observe whether there is an oily component. If there is an oily component in the first sampler and the second sampler, it is determined that the rubber pad will volatilize oily components during the vacuum drying process.

10. The method according to claim 9, wherein In step 3, the deflation components of the rubber pads inside the first rubber pad tooling and the second rubber pad tooling are sampled by the first sampler and the second sampler respectively. The sampling process includes: Step 3.1, when the heating time of the first rubber pad tooling and the second rubber pad tooling meets the laboratory requirements, close the first valve and the second valve to stop evacuating the first rubber pad tooling and the second rubber pad tooling; Step 3.2, when the pressure coefficient of the vacuum gauge meets the test sampling requirements, close the third valve and the fourth valve; Step 3.3, perform a rapid cooling treatment on the first sampler and the second sampler with a liquid nitrogen bottle to liquefy the condensable substances in the samples.

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