CN100434153C - A spherical high temperature and high pressure continuous feeding airlock system - Google Patents

Abstract

The invention discloses a spherical high-temperature and high-pressure continuous feeding air lock system, which comprises a spherical casing, the casing is composed of two hemispherical cylinders facing each other with concave surfaces connected by bolt flanges, and two glands are connected by bolt method. Orchid connected. The hemispherical cylinder is respectively provided with inlet and outlet ports, and flanges of the inlet and outlet ports are respectively welded. Spherical housings can withstand greater operating pressures than other housing styles. A runner is installed inside the casing, which is composed of uniformly distributed semicircular runners and spherical baffle rings on both sides welded to the shaft, and the runners and baffle rings are also welded to each other. At the same time, an arc-shaped wide-body friction plate is installed on the top of the runner, and the surface friction seal replaces the line seal of previous products. The system can withstand high temperature and hundreds of atmospheres, and is especially suitable for various industrial and agricultural applications and scientific research and experimental occasions where solid materials are continuously transported from a low-temperature and low-pressure environment into a high-temperature and high-pressure environment in an environment with a high temperature of 600 °C.

Description

A spherical high temperature and high pressure continuous feeding airlock system

technical field

The invention belongs to the field of mechanical manufacturing and the field of production and processing of strip-shaped, rod-shaped or block-shaped and granular solid materials, and relates to a spherical high-temperature and high-pressure continuous feeding airlock system, which can continuously feed solid materials from a low-temperature and low-pressure environment Transported into a high temperature and high pressure environment for processing.

Background technique

In industrial and agricultural production industries, such as tobacco stem steaming processing in the tobacco production industry, cooking and processing of grain raw materials in the brewing industry, cooking and processing of raw materials in the grain and food industry, paper industry, pharmaceutical industry and scientific research and experiment fields (such as In the field of biomass hydrogen production), etc., it is often necessary to transport solid materials from a low-temperature and low-pressure environment to a high-temperature and high-pressure environment for processing. During this process, the gas in the high temperature and high pressure environment is easy to leak into the low temperature and low pressure environment. In order to prevent the leakage of high temperature and high pressure gas, in the actual operation process, a cavity with a pressurization and pressure relief device is set between the low temperature and low pressure environment and the high temperature and high pressure environment. Can be blocked with a valve. The feeding process is as follows: the first step is to block the cavity from the high temperature and high pressure environment, connect it to the low temperature and low pressure environment, transport the solid material into the cavity and then close the cavity. The second step is to fill the cavity with steam to heat and pressurize the cavity, and stop the process of heating and pressurizing after the environment in the cavity reaches the specified high temperature and high pressure environment. The third step is to conduct the cavity with the high temperature and high pressure environment, and transport the solid material into the high temperature and high pressure environment. The fourth step is to close the cavity, and after the pressure in the cavity is released through the pressure relief device, the cavity is connected to the low-temperature and low-pressure environment, and the second feeding action is performed. The problem with this method is that the process of transporting solid materials from a low-temperature and low-pressure environment to a high-temperature and high-pressure environment is a discontinuous and intermittent process. The feeding speed of this method is affected by the chamber closing speed and conduction speed, as well as the chamber pressurization speed and depressurization speed, so the production efficiency of this discontinuous intermittent feeding method is low. With this method, the "quantity" (mass or volume, etc.) of the solid material transported from the low-temperature and low-pressure environment into the high-temperature and high-pressure environment is limited by the carrying capacity of the cavity. At the same time, since each feed has a process of pressurizing and depressurizing the cavity, the unloaded steam will cause loss. The above-mentioned problems limit the application of this method in the field of actual industrial and agricultural production and scientific research experiments.

Contents of the invention

Aiming at the defects or deficiencies such as inefficiency in the above-mentioned non-continuous intermittent feeding method, the object of the present invention is to provide a spherical high-temperature and high-pressure continuous feeding airlock system, which can continuously feed solid materials from a low-temperature and low-pressure environment. Continuously transported into the high temperature and high pressure environment, so that the solid material can quickly enter the high temperature and high pressure environment for processing, to achieve a continuous feeding process, and at the same time, no steam leakage occurs during the feeding process, or the steam leakage is controlled at an acceptable minimum In terms of quantity, it improves work efficiency and meets the needs of industrial and agricultural production and scientific research experiments.

In order to realize above-mentioned task, the present invention takes following technical solution:

A spherical high-temperature and high-pressure continuous feeding airlock system, including a casing, characterized in that the casing is spherical, and the concave surfaces of two hemispherical cylinders face each other, connected by bolt flanges, and composed of two pressure The cover is connected by bolts and flanges, and the hemispherical cylinder is respectively provided with inlet and outlet ports, and the inlet and outlet flanges are welded. A runner is installed inside the casing, and the runner is welded on the shaft by uniformly distributed semicircular runners and spherical baffle rings on both sides, and the runners and baffle rings are also welded to each other together to improve the overall strength and pressure bearing capacity of the runner; the top of the runner is connected with an arc-shaped wide-body friction plate, and the two ends of the rotating shaft are respectively provided with bearing heads, and the bearing heads are respectively connected with the rotating shaft through keys.

Some other characteristics of the present invention are:

The spherical segment-shaped baffle ring piece has the same curvature radius as the inner surface of the hemispherical cylinder, so that the space between them is narrow, so as to reduce the steam leakage area.

The working curved surface of the arc-shaped wide-body friction plate has the same radius of curvature as the inner surface of the spherical casing, so that the working curved surface of the arc-shaped wide-body friction plate is in close contact with the inner surface of the spherical casing to realize surface friction sealing, to reduce steam leakage.

Wave springs are installed in the arc-shaped wide-body friction plates.

The spherical high-temperature and high-pressure continuous feeding air lock system is sealed with effective high-temperature and high-pressure materials, and a sealing device is provided on the edge of the baffle ring to further prevent steam from leaking through the space between the runner and the casing, and at the bearing head The mature stuffing shaft sealing technology is used to seal, forming multiple sealing structures to prevent steam from leaking through the bearing.

The spherical high-temperature and high-pressure continuous feeding airlock system of the present invention adopts a spherical casing and can withstand greater working pressure than casings of other styles. Its radial seal adopts the arc-shaped wide-body friction plate and the inner surface of the hemispherical cylinder to contact and seal each other. The working curved surface of the curved wide-body friction plate has the same curvature radius as the inner surface of the hemispherical cylinder, so that the working curved surface of the curved wide-body friction plate and the inner surface of the hemispherical cylinder are in close contact to achieve the effect of surface sealing and reduce leakage. And by installing a self-compressing device, the arc-shaped wide-body friction plate is always in close contact with the inner surface of the hemispherical cylinder. In the case of wear, the arc-shaped wide-body friction plate and the inner surface of the hemispherical cylinder can also be closely contacted to achieve surface sealing. The spherical high-temperature and high-pressure continuous feeding airlock system adopting the above-mentioned sealing measures has the advantages of high working efficiency, good sealing performance, less steam leakage, and easy management and control. New invention.

The advantages of the present invention: strip, rod, block, and granular solid materials can be continuously transported from a low temperature and low pressure environment into a high temperature and high pressure environment; high working efficiency, good sealing performance, less leakage, and a large load adjustment range; high strength , strong pressure bearing capacity, reasonable and simple structure, moderate investment and operating costs; wide application range, bright promotion prospects and huge economic benefits.

Description of drawings

Figure 1 is a structural diagram of a spherical high-temperature and high-pressure continuous feeding airlock system.

FIG. 2 is an axial sectional view of FIG. 1 .

Fig. 3 is a sectional view of the arc-shaped wide-body friction plate.

The symbols in the figure represent respectively: 1. Material inlet, 2. Flange of material inlet, 3. First cylinder body, 4. Upper half cavity of the first sealing chamber, 5. First gland, 6. First Bearing head, 7. Discharge port, 8. Discharge port flange, 9. Second cylinder, 10. Lower half of the second sealing chamber, 11. Second bearing head, 12. Second gland, 13 , the first baffle ring, 14, the second baffle ring, 15, the runner, 16, the wave spring, 17, the first key, 18, the rotating shaft, 19, the arc wide body friction plate, 20, the first A packing material, 21, the lower half of the first sealed chamber, 22, the upper half of the second sealed chamber, 23, the second key, 24, the second packing material.

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Detailed ways

Referring to the accompanying drawings, the spherical high-temperature and high-pressure continuous feeding airlock system of the present invention includes a spherical casing, the spherical casing is opposed by two hemispherical cylinders 3, 9 concave surfaces, connected by bolt flanges, and composed of two The glands 5 and 12 are formed by connecting flanges with bolts. The upper part of the cylinder body 3 is provided with a material inlet 1, and the lower part of the cylinder body 9 is provided with a material outlet 7, and the material inlet flange 2 and the material outlet flange 8 are respectively welded. Spherical casings can withstand greater operating pressures than other styles of casings. A runner is installed inside the casing, and the runner is welded on the rotating shaft 18 by the uniformly distributed semicircular runner piece 15 and the spherical segment-shaped baffle ring pieces 13 and 14 on both sides, and the top of the runner piece 15 is connected with an arc The two ends of the wide-body friction plate 19 and the rotating shaft 18 are provided with bearing heads 6, 11, and the bearing heads 6, 11 are connected to the rotating shaft 18 through first and second keys 17, 23.

The following inventors give the working process of the spherical high-temperature and high-pressure continuous feeding airlock system taking tobacco stems or rice husks and broken straw as examples:

The solid material falls from the feed port 1 into the empty chamber of the runner under the action of gravity, and the bearing head 6 or 11 of the runner rotates under the drive of the motor. The solid material leaves the empty chamber of the runner under the action of gravity, and enters the high-temperature and high-pressure environment through the discharge port 7. During the whole feeding process, the conveying amount of solid material is controlled by the rotating speed of the runner, and the feeding process is continuous at the same time.

When the runner rotates, the arc-shaped wide-body friction plate 19 on the top of the semicircular runner plate 15 is always in close contact with the inner surfaces of the first and second hemispherical cylinders 3, 9, and the arc-shaped wide-body friction plate 19 It can be made of wear-resistant materials (such as tin bronze), and its working curved surface and the inner surface of the spherical casing have the same radius of curvature. The body friction plate 19 produces the effect of self-compression, even if wear occurs, the arc-shaped wide body friction plate 19 can also be in close contact with the inner surface of the spherical casing to achieve a face seal, reducing leakage.

The first and second spherical baffle rings 13 and 14 on the runner are mutually welded with the runner piece 15, and the strength is very high, so the pressure bearing capacity is strong and can withstand high pressure. The first and second baffle rings 13, 14 and the spherical casing have the same radius of curvature, so the space between the two is narrow, reducing the steam leakage area, and the first and second baffle rings The edges of 13 and 14 are circumferentially provided with sealing devices. For example, seal grooves are provided on the edges of the first and second baffle rings 13 and 14, and a high-temperature-resistant second packing material 24 is installed circumferentially. After being compressed by the casing, steam can be further prevented from passing through the baffle rings. The space between the sheets 13, 14 and the housing leaks. The mature stuffing shaft seal technology is used at the bearing head to prevent steam from leaking from the bearing. For example, in the circumferential groove between the first sealed cavity 4, 21 and the second sealed cavity 10, 22, the high temperature resistant first packing material 20 is installed circumferentially, and is compressed by the first and second glands 5, 12 Finally, it can withstand hundreds of atmospheric pressures and high temperatures around 600°C.

Claims (7)

1. spherical high-temperature high pressure continuous feed air lock system, comprise a casing, it is characterized in that, described casing is spherical, concave surface by two hemispheric upper and lower cylindrical shells (3,9) is relative, the employing bolt flange connects, and connect via bolt flange by two glands (5,12) and to form, feeding mouth (1) is offered on upper shell (3) top, discharging opening (7) is offered in lower shell (9) bottom, is welded with feeding mouth flange (2) and discharging opening flange (8) on feeding mouth (1) and the discharging opening (7) respectively; Runner is installed in the casing; Described runner is welded in the rotating shaft (18) by the segment shape baffle plate circle sheet (13,14) on equally distributed semicircle runner sheet (15) and both sides, and runner sheet (15) and baffle plate circle sheet (13,14) also are welded to each other together, to improve the bulk strength and the bearing capacity of runner; Runner sheet (15) top is connected with arc expanded letter friction plate (19), and the two ends of rotating shaft (18) are respectively equipped with bearing head (6,11), and bearing head (6,11) links to each other with rotating shaft (18) by key (17,23) respectively.

2. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 1, it is characterized in that, described segment shape baffle plate circle sheet (13,14) has identical radius of curvature with the inner surface of globe case, makes space between the two narrow and small, to reduce the steam leakage area.

3. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 1 is characterized in that the edge of described segment shape baffle plate circle sheet (13,14) is provided with sealing device, leaks by the space between runner and the casing to stop steam.

4. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 3, it is characterized in that, the edge setting of described segment shape baffle plate circle sheet (13,14) be sealed into many places, constitute multi-sealing structure, further stop steam to leak by the space between runner and the casing.

5. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 1, it is characterized in that, the working curved surface of described arc expanded letter friction plate (19) has identical radius of curvature with the inner surface of globe case, the working curved surface of arc expanded letter friction plate (19) and the inner surface of globe case are closely contacted, realization face is friction sealed, to reduce steam leakage.

6. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 1 is characterized in that, wavy spring (16) is installed in the described arc expanded letter friction plate (19).

7. spherical high-temperature high pressure continuous feed air lock system as claimed in claim 1 is characterized in that, described two bearing heads (6,11) adopt circumferential gland sealed sealing means respectively with upper and lower cylindrical shell (3,9) junction, to stop steam leakage.

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