Oil content detection device for air separation plant
Through the cylindrical transparent shell and the oil content detection device of activated alumina, the problem of expensive and discontinuous oil content detection in the air separation equipment is solved, and low-cost and continuous oil content detection is achieved to ensure the stable operation of the equipment.
Patent Information
- Application Number
- CN202421320067.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The existing air-dividing equipment oil content detection devices are expensive and are not suitable for continuous testing, which leads to high cost of cleaning and replacing molecular sieves after contamination of the nitrogen production system, affecting the normal operation of the equipment.
The oil content detection device with a cylindrical transparent shell, activated alumina, color card and compression ring structure is adopted. The activated alumina absorbs oil content and changes color through the transparent shell. The oil content is observed with the transparent shell, and the compression ring prevents leakage and achieves continuous detection.
It realizes compact structure, convenient inspection, low cost and continuous detection, timely discover and eliminate hidden dangers of oil content, and protects the normal operation of air separation equipment.
Smart Images
Figure CN223051188U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gas detection of air separation equipment, and particularly relates to an oil content detection device for air separation equipment. Background Art
[0002] An air separation device, abbreviated as an air separation plant, refers to a gas separation device that liquefies, rectifies, and finally separates air into oxygen, nitrogen, and other useful gases. Pressure swing adsorption for nitrogen production (abbreviated as PSA nitrogen production) belongs to air separation equipment and is an advanced gas separation device. Using high-quality carbon molecular sieve (CMS) as an adsorbent, it separates air at normal temperature by the principle of pressure swing adsorption (PSA) to produce high-purity nitrogen.
[0003] At present, in the actual production and use process of existing nitrogen production air separation equipment, the air compressor will occasionally have an oil injection accident, which will then pollute the subsequent air purification system and nitrogen production system, seriously threatening the normal operation of the equipment. After polluting the nitrogen production system, it takes a lot of time, money, and manpower to clean the polluted pipeline and replace the molecular sieve. Therefore, in order to protect the nitrogen production system, an oil content detection device needs to be set at the front end of the nitrogen production system intake. The existing commonly used oil content detection methods include the gravimetric method, infrared spectrophotometry, ultraviolet spectrophotometry, chemical indicator tube method, particle size spectrometer method, and photoionization detector method, etc. On the one hand, these methods require expensive instruments for detection, and on the other hand, they are not suitable for the continuous detection requirements of the nitrogen production system. For this reason, the existing oil content detection devices for air separation equipment need to be further improved. Summary of the Utility Model
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an oil content detection device for air separation equipment, which has the characteristics of compact structure, convenient and practical detection, continuous detection, and low detection cost, and can be widely used in the technical field of gas detection of air separation equipment.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions: An oil content detection device for air separation equipment includes a transparent outer shell with a cylindrical structure, and a plurality of color cards are arranged on the transparent outer shell; a hexagonal step is provided at the upper end of the transparent outer shell, and the hexagonal step is connected to a circular sealing sleeve; an air inlet is arranged inside the circular sealing sleeve, a compression spring is arranged at the rear end of the air inlet; a compression ring is arranged at the rear end of the compression spring, and the compression ring is located inside the transparent outer shell and is hermetically connected.
[0006] As an improvement, the transparent outer shell is threadedly connected to the circular sealing sleeve.
[0007] As an improvement, a sealing ring is arranged at the connection between the transparent outer shell and the circular sealing sleeve.
[0008] As an improvement, the transparent housing is filled with activated alumina.
[0009] As an improvement, the activated alumina is γ-activated alumina balls, and the diameter of the γ-activated alumina balls is φ10~φ30mm.
[0010] As an improvement, the color card is located in the middle sandwich layer or the outer surface of the transparent housing.
[0011] As an improvement, the color cards are evenly distributed along the periphery of the transparent housing.
[0012] As an improvement, the air inlet is a circular through-hole structure.
[0013] As an improvement, the air inlet is located at the central position of the internal step of the circular sealing sleeve.
[0014] As an improvement, the pressing ring is internally provided with a sealing mesh plate, the sealing mesh plate is provided with uniformly distributed round holes, and the diameter of the round holes is φ2~φ8mm.
[0015] The beneficial effects obtained by the present utility model are as follows: an oil content detection device for an air separation plant has the characteristics of compact structure, convenient and practical detection, continuous detection, and low detection cost; by adopting a transparent housing structure, the color change of the activated alumina can be observed, and at the same time, by comparing the color cards on the transparent housing, the high or low oil content in the compressed air can be intuitively understood. When the activated alumina changes color severely, the whole system needs to be inspected to eliminate potential hazards and prevent damage to the air separation plant; by using a pressing ring and a pressing spring to press the activated alumina tightly, a sealing ring is provided to prevent compressed air leakage, and the compressed air enters the detection device through the air inlet; in addition, in addition to changing color when absorbing oil, the activated alumina will also change color after absorbing a certain amount of moisture and dust, so this oil content detection device can not only detect oil content, but also remind customers to perform maintenance on the air purification system in time. Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of the oil content detection device for the air separation plant of the present utility model;
[0017] Figure 2 is a top view of the oil content detection device for the air separation plant of the present utility model;
[0018] Figure 3 is a sectional view taken along line A-A of the oil content detection device for the air separation plant of the present utility model.
[0019] In the figure: 1, transparent housing; 2, color card; 3, hexagonal step; 4, circular sealing sleeve; 5, air inlet; 6, pressing spring; 7, pressing ring; 8, sealing ring; 9, activated alumina; 10, internal step; 11, rounded corner. Detailed implementation manners
[0020] With reference to the accompanying drawings, detailed descriptions will be given to the preferred embodiments of the present utility model.
[0021] As Figures 1 to 3 shown, an oil content detection device for an air separation device in this embodiment includes a transparent housing 1 with a cylindrical structure, and a plurality of color cards 2 are provided on the transparent housing 1; a hexagonal step 3 is provided at the upper end of the transparent housing 1, and the hexagonal step 3 is connected to a circular sealing sleeve 4; an air inlet 5 is provided inside the circular sealing sleeve 4, and a compression spring 6 is provided at the rear end of the air inlet 5; a compression ring 7 is provided at the rear end of the compression spring 6, and the compression ring 7 is located inside the transparent housing 1 and is hermetically connected.
[0022] Furthermore, the transparent housing 1 and the circular sealing sleeve 4 are connected by threads; specifically, the transparent housing 1 is provided with external threads, and the circular sealing sleeve 4 is provided with internal threads to achieve internal and external thread connection; specifically, the bottom of the transparent housing 1 is a sealed structure and is provided with a chamfer 11; furthermore, a sealing ring 8 is provided at the connection between the transparent housing 1 and the circular sealing sleeve 4. Specifically, the sealing ring 8 is an O-ring. Through the sealing ring 8, leakage of compressed air can be effectively prevented, avoiding affecting the normal operation of the air separation device.
[0023] Furthermore, the inside of the transparent housing 1 is filled with activated alumina 9; specifically, the activated alumina 9 is porous γ-activated alumina balls, and the diameter of the γ-activated alumina balls is φ10~φ30mm; preferably φ15~25mm; more specifically, the γ-activated alumina balls are hermetically stacked with three diameters of large balls, medium balls and small balls to improve the packing density, so that the incoming gas can fully contact and exchange with the inside of the γ-activated alumina balls, improving the adsorption effect.
[0024] Furthermore, the color card 2 is located in the middle sandwich layer or the outer surface of the transparent housing 1, preferably arranged in the middle sandwich layer; furthermore, the color card 2 is evenly distributed along the periphery of the transparent housing 1. Specifically, the color cards 2 are staggered at equal intervals, so as to facilitate observing the color difference from various angles and improve the detection efficiency.
[0025] Furthermore, the air inlet 5 is a circular through-hole structure; specifically, the air inlet 5 is located at the center of the internal step 10 of the circular sealing sleeve 4.
[0026] Furthermore, the compression ring 7 is internally provided with a sealing mesh plate, and the sealing mesh plate is provided with uniformly distributed round holes with a diameter of φ2~φ8mm. On the one hand, the porous sealing mesh plate can compress the activated alumina 9, and on the other hand, it is convenient for dispersing the incoming air and improving the air intake efficiency.
[0027] The utility model discloses an oil content detection device, which has the characteristics of compact structure, convenient and practical detection, continuous detection and low detection cost. The utility model mainly consists of activated alumina, a transparent shell, a color card, a clamping ring, a clamping spring, a sealing ring and an air inlet. The activated alumina is filled in the detection device, and then the activated alumina is compressed by the clamping ring and the clamping spring. The sealing ring prevents compressed air from leaking. The compressed air enters the device through the air inlet. The activated alumina has a strong adsorption capacity for oil and the color of the activated alumina changes after adsorbing a certain amount of oil. The color change of the activated alumina can be observed through the transparent shell, which is convenient for checking the whole system and eliminating hidden dangers. The utility model has an important practical application value in the continuous detection of gas in air separation equipment.
[0028] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.
Claims
1. An oil content detection device for air separation equipment, characterized in that: The invention comprises a transparent shell (1) of a cylindrical structure, wherein a plurality of color cards (2) are arranged on the transparent shell (1); a hexagonal step (3) is arranged at the upper end of the transparent shell (1), and the hexagonal step (3) is connected to a circular sealing sleeve (4); an air inlet (5) is arranged inside the circular sealing sleeve (4), and a compression spring (6) is arranged at the rear end of the air inlet (5); a compression ring (7) is arranged at the rear end of the compression spring (6), and the compression ring (7) is located inside the transparent shell (1) and is sealed.
2. The oil content detection device for air separation equipment according to claim 1, characterized in that: The transparent housing (1) is connected to the circular sealing sleeve (4) via threads.
3. The oil content detection device for air separation equipment according to claim 2, characterized in that: A sealing ring (8) is provided at the connection between the transparent housing (1) and the circular sealing sleeve (4).
4. The oil content detection device for air separation equipment according to claim 1, characterized in that: The transparent shell (1) is filled with activated alumina (9).
5. The oil content detection device for air separation equipment according to claim 4, characterized in that: The activated alumina (9) is a γ-activated alumina ball, and the diameter of the γ-activated alumina ball is φ10~φ30 mm.
6. The oil content detection device for air separation equipment according to claim 1, characterized in that: The color card (2) is located in the middle layer or outer surface of the transparent shell (1).
7. The oil content detection device for air separation equipment according to claim 6, characterized in that: The color cards (2) are evenly distributed along the periphery of the transparent shell (1).
8. The oil content detection device for air separation equipment according to claim 1, characterized in that: The air inlet (5) is a circular through-hole structure.
9. The oil content detection device for air separation equipment according to claim 8, characterized in that: The air inlet (5) is located at the center of the inner step (10) of the circular sealing sleeve (4).
10. The oil content detection device for air separation equipment according to claim 1, characterized in that: The clamping ring (7) is provided with a sealing mesh plate inside, and the sealing mesh plate is provided with evenly distributed circular holes, and the diameter of the circular holes is φ2~φ8mm.