Carbon ring sealing life test device and method

Abstract

The invention provides a carbon ring sealing life test device and method, and the device comprises a gas supply assembly, an air pressure stabilizing assembly, a gas drying assembly, a gas regulation and control assembly, a fixed bearing assembly, a movable matching assembly, a power driving assembly, and a sealing measurement assembly. The test device integrates a plurality of components such as gas supply, stable air pressure, gas drying, gas regulation and control, fixed bearing, movable matching and connection, power driving and rotation, sealing measurement and the like to form a complete test system, so that the test process is smoother, the uncertainty and errors in the test are reduced, the sealing performance of the carbon ring can be tested, and the test efficiency is improved. Different working conditions can be simulated, so that the sealing performance and the service life of the carbon ring under different conditions can be comprehensively evaluated, the performance characteristics of the carbon ring can be known more accurately, powerful support is provided for design and improvement of products, and by adjusting parameters and configuration of each component, the sealing performance and the service life of the carbon ring can be accurately evaluated. The sealing performance and the service life of different carbon rings can be accurately tested.

Description

Technical Field

[0001] The invention relates to sealing ring production equipment, and in particular to a carbon ring sealing life test device and method. Background Art

[0002] Patent document CN104062084B discloses a sealing ring test device, in which the sealing ring is installed in the matching groove of the oil sleeve, and the sealing ring test device is assembled according to the drawings. During the test, oil is injected into the oil pipe through the hydraulic oil source to make the pressure reach the pressure range when the sealing ring is used, and the rotation speed of the transmission shaft is adjusted to make the sealing ring reach the use speed range. By measuring the outflow of oil from the overflow pipe, the static and dynamic leakage of the oil chamber where the sealing ring is located is checked, and the service life of the sealing ring is assessed according to the time, rotation speed, and pressure specified in the corresponding sealing ring test outline. Through the wear test of sealing rings of different materials, the use effects of sealing rings of different materials are compared. However, the versatility of this sealing ring test device is not strong, and it is difficult to meet the use requirements of different fields. Therefore, it is necessary to optimize the structure of this sealing ring test device to overcome the above defects. Summary of the invention

[0003] The purpose of the present invention is to provide a carbon ring seal life test device and method, so as to facilitate testing of the carbon ring seal.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A carbon ring seal life test device, comprising:

[0006] A gas supply assembly, which can supply compressed gas to the outside;

[0007] An air pressure stabilizing component, which is connected to the gas supply component, and the gas supply component supplies compressed gas to the air pressure stabilizing component, and the air pressure stabilizing component keeps the compressed gas at a constant pressure;

[0008] A gas drying component, which is connected to the gas pressure stabilizing component, supplies compressed gas to the gas pressure stabilizing component, and dries the compressed gas to form dry compressed gas.

[0009] A gas regulating component, the gas regulating component is connected to the gas drying component, the gas drying component supplies dry compressed gas to the gas regulating component, and the gas regulating component regulates the compressed gas;

[0010] A fixed bearing assembly, wherein the fixed bearing assembly has a carbon ring bearing space inside and is connected to the gas regulating assembly, and the fixed bearing assembly is used to carry and position the carbon ring;

[0011] A movable matching component, which is installed in the fixed bearing component through a rotating structure and can rotate in the fixed bearing component, is matched with the carbon ring, can perform friction treatment on the carbon ring, and forms a sealed space between the movable matching component, the fixed bearing component and the carbon ring, and the gas regulating component supplies compressed gas to the sealed space;

[0012] A power-driven rotating assembly, which is connected to the movable matching assembly and can drive the movable matching assembly to rotate;

[0013] A sealing measurement component is engaged with the fixed bearing component and communicated with the sealing space, and the sealing measurement component is used to measure the sealing performance of the carbon ring.

[0014] Specifically, the gas supply assembly includes:

[0015] A gas compressor is used to supply compressed gas to the outside.

[0016] The air pressure stabilization components include:

[0017] The pressure-stabilizing gas storage tank is connected to the gas supply component through a pipeline. The gas supply component supplies compressed gas to the pressure-stabilizing gas storage tank, and the pressure-stabilizing gas storage tank keeps the compressed gas at a constant pressure.

[0018] Gas Drying Kit includes:

[0019] The drying adsorption tower is connected with the air pressure stabilizing component through a pipeline, the air pressure stabilizing component supplies compressed gas to the drying adsorption tower, and the drying adsorption tower dries the compressed gas to form dry compressed gas.

[0020] Gas control components include:

[0021] An air intake switching valve, which is connected to a gas drying component through a pipeline, the gas drying component supplies dry compressed gas to the air intake switching valve, and the gas switching valve switches the on-off state of the outlet end of the gas drying component;

[0022] The outlet regulating valve is connected to the inlet switching valve through a pipeline. The inlet switching valve supplies compressed gas to the outlet regulating valve, and the outlet regulating valve regulates its state.

[0023] The fixed bearing components include:

[0024] A forward bearing plate, the edge of which is bent backwards, a forward opening is provided inside the forward bearing plate, the forward opening axially penetrates both sides of the forward bearing plate, and the gas control component is engaged with the forward opening;

[0025] The reverse bearing plate is located behind the forward bearing plate, with its edge bent forward and a reverse opening provided inside. The reverse opening axially penetrates through both sides of the reverse bearing plate, and the sealing measurement assembly is respectively engaged with the forward opening and the reverse opening. The two ends of the carbon ring are respectively engaged with the edges of the reverse bearing plate and the forward bearing plate, and the carbon ring is supported and positioned by the forward bearing plate and the reverse bearing plate.

[0026] The active fitting components include:

[0027] The matching friction disc is located in the fixed bearing assembly and is installed in the fixed bearing assembly through a rotating shaft. It can rotate in the fixed bearing assembly, and its outer edge abuts against the inner edge of the carbon ring to perform friction treatment on the carbon ring.

[0028] The power drive assembly includes:

[0029] A driving motor, the power output shaft of which extends in the direction of the fixed bearing assembly, and a frequency conversion controller is provided to control the running state of the driving motor;

[0030] The transmission coupling is engaged with the end of the power output shaft of the driving motor and is engaged with the movable coupling assembly through the bearing box. The movable coupling assembly is driven to rotate by the driving motor.

[0031] The sealed measurement kit includes:

[0032] The differential pressure sensor is connected to the fixed bearing assembly through a pipeline and communicated with the sealing space. The differential pressure sensor measures the sealing performance of the carbon ring.

[0033] A carbon ring seal life test method is carried out using the above-mentioned carbon ring seal life test device, which comprises:

[0034] A. Install a test carbon ring seal between the forward bearing plate and the reverse bearing plate, connect the forward opening of the forward bearing plate to the outlet regulating valve, and connect the reverse opening of the reverse bearing plate to the pressure difference sensor;

[0035] The target pressure value is set for the pressure-stabilizing gas storage tank, and the gas compressor is started to inflate the pressure-stabilizing gas storage tank to reach the target pressure;

[0036] Open the valve of the pressure-stabilizing gas storage tank to allow the gas to enter the drying adsorption tower. After the gas reaches the preset purity, allow the gas to enter the pipeline, open the air inlet switching valve and the air outlet regulating valve, and adjust to the pressure required for the test;

[0037] Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the differential pressure sensor. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal in the current working condition;

[0038] B. Disconnect the connection between the drying adsorption tower and the air inlet switching valve, and connect the air inlet switching valve to the negative pressure vacuum device;

[0039] Start the negative pressure vacuum device, open the air inlet switching valve and the air outlet regulating valve in sequence, adjust to the negative pressure required for the test condition and maintain it;

[0040] Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the measurement system. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal under the current negative pressure condition.

[0041] The advantages of the present invention are:

[0042] The test device integrates multiple components such as gas supply, gas pressure stabilization, gas drying, gas control, fixed load, movable connection, power drive and sealing measurement to form a complete test system, which makes the test process smoother and reduces the uncertainty and error in the test. It can not only test the sealing performance of carbon rings, but also simulate different working conditions, so as to comprehensively evaluate the sealing performance and life of carbon rings under different conditions, which helps to understand the performance characteristics of carbon rings more accurately and provide strong support for product design and improvement. By adjusting the parameters and configuration of each component, the sealing performance and life of different carbon rings can be accurately tested, which makes the device have broad application prospects in the field of carbon ring sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the carbon ring seal life test device proposed by the present invention;

[0044] Figure 2 It is a schematic diagram of the assembly state of the carbon ring. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0046] like Figure 1 , Figure 2 As shown, the carbon ring seal life test device proposed by the present invention includes a gas supply component, an air pressure stabilizing component, a gas drying component, a gas regulating component, a fixed bearing component, a movable matching component, a power drive component and a sealing measurement component. The gas supply component can supply compressed gas to the outside. The air pressure stabilizing component is connected with the gas supply component, and the gas supply component supplies compressed gas to the air pressure stabilizing component, and the air pressure stabilizing component keeps the compressed gas at a constant pressure. The gas drying component is connected with the air pressure stabilizing component, and the air pressure stabilizing component supplies compressed gas to the air pressure stabilizing component, and the air pressure drying component dries the compressed gas to form dry compressed gas. The gas regulating component is connected with the gas drying component, and the gas drying component supplies compressed gas to the gas regulating component. Dry compressed gas is supplied, and the compressed gas is regulated and processed by the gas regulating component. The fixed bearing component has a carbon ring bearing space inside and is connected with the gas regulating component. The carbon ring is carried and positioned by the fixed bearing component. The movable matching component is installed in the fixed bearing component through a rotating structure and can rotate in the fixed bearing component. It is matched with the carbon ring and can perform friction treatment on the carbon ring, and a sealed space is formed between the movable matching component, the fixed bearing component and the carbon ring. The gas regulating component supplies compressed gas to the sealed space. The power drive component is connected to the movable matching component to drive the movable matching component to rotate. The sealing measurement component is engaged with the fixed bearing component and is connected with the sealing space. The sealing performance of the carbon ring is measured by the sealing measurement component.

[0047] In this embodiment, the gas supply assembly includes a gas compressor 100, which can supply compressed gas to the outside.

[0048] The gas pressure stabilization component includes a pressure-stabilizing gas storage tank 200, which is connected to the outlet end of the gas compressor through a pipeline. The gas compressor supplies compressed gas to the pressure-stabilizing gas storage tank, and the pressure-stabilizing gas storage tank keeps the compressed gas at a constant pressure.

[0049] The gas drying component includes a drying adsorption tower 300, which is connected to the outlet end of the pressure-stabilizing gas storage tank through a pipeline. The pressure-stabilizing gas storage tank supplies compressed gas to the drying adsorption tower, and the drying adsorption tower dries the compressed gas to form dry compressed gas.

[0050] The gas control component includes an air inlet switching valve 410 and an air outlet regulating valve 420. The air inlet switching valve is connected to the outlet end of the drying adsorption tower through a pipeline. Dry compressed gas is supplied from the outlet end of the drying adsorption tower to the air inlet switching valve, and the gas switching valve switches the on-off state of the outlet end of the drying adsorption tower. The air outlet regulating valve is connected to the air inlet switching valve through a pipeline. The air inlet switching valve supplies compressed gas to the air outlet regulating valve, and the air outlet regulating valve regulates its state.

[0051] The fixed bearing assembly includes a forward bearing plate 510 and a reverse bearing plate 520. The edge of the forward bearing plate is bent backwards, and a forward opening 511 is provided inside the forward bearing plate. The forward opening axially penetrates both sides of the forward bearing plate. The air outlet regulating valve is engaged with the forward opening. The reverse bearing plate is located behind the forward bearing plate, and its edge is bent forwards, and a reverse opening 521 is provided inside the reverse bearing plate. The reverse opening axially penetrates both sides of the reverse bearing plate. The sealing measurement assembly is respectively engaged with the forward opening and the reverse opening. The two ends of the carbon ring are respectively engaged with the edges of the reverse bearing plate and the forward bearing plate. The carbon ring is supported and positioned by the forward bearing plate and the reverse bearing plate. A sealing ring body is also provided between the carbon ring and the reverse bearing plate and the forward bearing plate to ensure its sealing.

[0052] The movable matching assembly includes a matching friction disc 600, which is located between the forward bearing plate and the reverse bearing plate and is installed in the reverse bearing plate through a rotating shaft. It can rotate between the forward bearing plate and the reverse bearing plate. Its outer edge abuts against the inner edge of the carbon ring, and the carbon ring can be rubbed to form a sealed space between the carbon ring, the forward bearing plate, the reverse bearing plate and the matching friction disc.

[0053] The power drive assembly includes a drive motor 710 and a transmission coupling 720. The power output shaft of the drive motor extends in the direction opposite to the load-bearing plate, and a frequency conversion controller 711 is provided to control the operating state of the drive motor. The transmission coupling is engaged with the end of the power output shaft of the drive motor and is engaged with the matching friction disk through the bearing box 721. The matching friction disk is driven to rotate by the drive motor.

[0054] The sealing measurement assembly includes a differential pressure sensor 800 , which is connected to the reverse opening through a pipeline and communicates with the sealing space. The differential pressure sensor measures the sealing performance of the carbon ring.

[0055] The test method of the above-mentioned carbon ring seal life test device includes:

[0056] A. Install a test carbon ring seal between the forward bearing plate and the reverse bearing plate, connect the forward opening of the forward bearing plate to the outlet regulating valve, and connect the reverse opening of the reverse bearing plate to the pressure difference sensor;

[0057] The target pressure value is set for the pressure-stabilizing gas storage tank, and the gas compressor is started to inflate the pressure-stabilizing gas storage tank to reach the target pressure;

[0058] Open the valve of the pressure-stabilizing gas storage tank to allow the gas to enter the drying adsorption tower. After the gas reaches the preset purity, allow the gas to enter the pipeline, open the air inlet switching valve and the air outlet regulating valve, and adjust to the pressure required for the test;

[0059] Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the differential pressure sensor. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal in the current working condition;

[0060] B. Disconnect the connection between the drying adsorption tower and the air inlet switching valve, and connect the air inlet switching valve to the negative pressure vacuum device;

[0061] Start the negative pressure vacuum device, open the air inlet switching valve and the air outlet regulating valve in sequence, adjust to the negative pressure required for the test condition and maintain it;

[0062] Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the measurement system. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal under the current negative pressure condition.

[0063] In the description of the present invention, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A carbon ring seal life test device, characterized in that: include: A gas supply assembly, which can supply compressed gas to the outside; An air pressure stabilizing component, which is connected to the gas supply component, and the gas supply component supplies compressed gas to the air pressure stabilizing component, and the air pressure stabilizing component keeps the compressed gas at a constant pressure; A gas drying component, which is connected to the gas pressure stabilizing component, supplies compressed gas to the gas pressure stabilizing component, and dries the compressed gas to form dry compressed gas. A gas regulating component, the gas regulating component is connected to the gas drying component, the gas drying component supplies dry compressed gas to the gas regulating component, and the gas regulating component regulates the compressed gas; A fixed bearing assembly, wherein the fixed bearing assembly has a carbon ring bearing space inside and is connected to the gas regulating assembly, and the fixed bearing assembly is used to carry and position the carbon ring; A movable matching component, which is installed in the fixed bearing component through a rotating structure and can rotate in the fixed bearing component, is matched with the carbon ring, can perform friction treatment on the carbon ring, and forms a sealed space between the movable matching component, the fixed bearing component and the carbon ring, and the gas regulating component supplies compressed gas to the sealed space; A power-driven rotating assembly, which is connected to the movable matching assembly and can drive the movable matching assembly to rotate; A sealing measurement component is engaged with the fixed bearing component and communicated with the sealing space, and the sealing measurement component is used to measure the sealing performance of the carbon ring.

2. A carbon ring seal life test device according to claim 1, characterized in that: Gas supply kit includes: A gas compressor is used to supply compressed gas to the outside.

3. A carbon ring seal life test device according to claim 1, characterized in that: The air pressure stabilization components include: The pressure-stabilizing gas storage tank is connected to the gas supply component through a pipeline. The gas supply component supplies compressed gas to the pressure-stabilizing gas storage tank, and the pressure-stabilizing gas storage tank keeps the compressed gas at a constant pressure.

4. A carbon ring seal life test device according to claim 1, characterized in that: Gas Drying Kit includes: The drying adsorption tower is connected with the air pressure stabilizing component through a pipeline, the air pressure stabilizing component supplies compressed gas to the drying adsorption tower, and the drying adsorption tower dries the compressed gas to form dry compressed gas.

5. A carbon ring seal life test device according to claim 1, characterized in that: Gas control components include: An air intake switching valve, which is connected to a gas drying component through a pipeline, the gas drying component supplies dry compressed gas to the air intake switching valve, and the gas switching valve switches the on-off state of the outlet end of the gas drying component; The outlet regulating valve is connected to the inlet switching valve through a pipeline. The inlet switching valve supplies compressed gas to the outlet regulating valve, and the outlet regulating valve regulates its state.

6. A carbon ring seal life test device according to claim 1, characterized in that: The fixed bearing components include: A forward bearing plate, the edge of which is bent backwards, a forward opening is provided inside the forward bearing plate, the forward opening axially penetrates both sides of the forward bearing plate, and the gas control component is engaged with the forward opening; The reverse bearing plate is located behind the forward bearing plate, with its edge bent forward and a reverse opening provided inside. The reverse opening axially penetrates through both sides of the reverse bearing plate, and the sealing measurement assembly is respectively engaged with the forward opening and the reverse opening. The two ends of the carbon ring are respectively engaged with the edges of the reverse bearing plate and the forward bearing plate, and the carbon ring is supported and positioned by the forward bearing plate and the reverse bearing plate.

7. A carbon ring seal life test device according to claim 1, characterized in that: The active fitting components include: The matching friction disc is located in the fixed bearing assembly and is installed in the fixed bearing assembly through a rotating shaft. It can rotate in the fixed bearing assembly, and its outer edge abuts against the inner edge of the carbon ring to perform friction treatment on the carbon ring.

8. The carbon ring seal life test device according to claim 1, characterized in that: The power drive assembly includes: A driving motor, the power output shaft of which extends in the direction of the fixed bearing assembly, and a frequency conversion controller is provided to control the running state of the driving motor; The transmission coupling is engaged with the end of the power output shaft of the driving motor and is engaged with the movable coupling assembly through the bearing box. The movable coupling assembly is driven to rotate by the driving motor.

9. A carbon ring seal life test device according to claim 1, characterized in that: The sealed measurement kit includes: The differential pressure sensor is connected to the fixed bearing assembly through a pipeline and communicated with the sealing space. The differential pressure sensor measures the sealing performance of the carbon ring.

10. A carbon ring seal life test method, using the carbon ring seal life test device according to any one of claims 1 to 9, characterized in that: include: A. Install a test carbon ring seal between the forward bearing plate and the reverse bearing plate, connect the forward opening of the forward bearing plate to the outlet regulating valve, and connect the reverse opening of the reverse bearing plate to the pressure difference sensor; The target pressure value is set for the pressure-stabilizing gas storage tank, and the gas compressor is started to inflate the pressure-stabilizing gas storage tank to reach the target pressure; Open the valve of the pressure-stabilizing gas storage tank to allow the gas to enter the drying adsorption tower. After the gas reaches the preset purity, allow the gas to enter the pipeline, open the air inlet switching valve and the air outlet regulating valve, and adjust to the pressure required for the test; Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the differential pressure sensor. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal in the current working condition; B. Disconnect the connection between the drying adsorption tower and the air inlet switching valve, and connect the air inlet switching valve to the negative pressure vacuum device; Start the negative pressure vacuum device, open the air inlet switching valve and the air outlet regulating valve in sequence, adjust to the negative pressure required for the test condition and maintain it; Start the drive motor, set the target speed and speed-up curve, and record the test start time; at the same time, set the leakage rate in the measurement system. If the leakage rate value is reached, stop the test and record the current time and leakage rate to obtain the service life of the carbon ring seal under the current negative pressure condition.

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