CN219072914U - Large-visual-field anti-fog observation window of overhead reaction kettle - Google Patents

Abstract

The utility model relates to the technical field of chemical experiment instruments, in particular to a large field of view anti-fog observation window for an overhead reactor. The large field of view anti-fog observation window for an overhead reaction kettle includes a plane mirror. The inside of the plano-concave lens is provided with an axicon lens, and the tapered end of the axicon lens faces the outside. The plane mirror, the plano-concave lens and the axicon lens are jointly surrounded by a cavity, and the plane mirror is far away from the surface of the plano-concave lens. One side is provided with an oil inlet and a first oil outlet at preset intervals. In the actual experimental application process, using the large-view anti-fog observation window of the top-mounted reactor, it is possible to dispose of the fog or even generate water droplets inside the observation window in time, so as not to affect the observation; at the same time, during the reaction process, The brightness can be increased through the axicon lens, which is convenient for observation, and the field of view can be widened through the plano-concave lens, so as to achieve overall observation; it has the advantages of simple operation and low cost.

Description

A large field of view anti-fog observation window for an overhead reactor

technical field

The utility model relates to the technical field of chemical experiment instruments, in particular to an anti-fog observation window with a large field of vision for an overhead reactor.

Background technique

Reactor refers to a closed container that can carry out physical and chemical reactions above room temperature and above normal pressure. Compared with traditional reaction equipment, due to its special stainless steel shell and structural design of high temperature resistant and corrosion resistant , which can meet the conditions required for most chemical reactions, which greatly promotes the research and exploration of matter in the industrial and scientific circles, but the current observation window still has the following problems:

1. Reactors are generally made of carbon-manganese steel, stainless steel, zirconium, nickel-based alloys, and other composite materials. Due to material problems, the reaction in the reactor cannot be seen clearly, and many reactors in the prior art do not have observation windows, or set There is an observation window, but the material in the reactor is too deep and the light is dark, which affects the observation;

2. When the solvent in the reaction kettle reacts, the temperature inside the reaction kettle is high and the outside temperature is low, which will generate water mist in the observation window and affect the observation;

3. Volatilization of small molecules in the reactor will also condense, which will affect the observation;

4. The current observation windows are basically flat glass, and the light enters into a point, which is not suitable for observing the viscosity and stirring paddle vortex, and the illumination range is small, the field of view is narrow, and there is no change.

Therefore, there is an urgent need for a large field of vision anti-fog observation window for overhead reactors.

Utility model content

In order to solve the problems in the above-mentioned background technology, the utility model provides a large field of view anti-fog observation window for the top-mounted reactor, which realizes that the experimental state can also be observed during the high-temperature and high-pressure process of the reactor, and provides more for the experimental process. Analyzed data.

The technical scheme of the utility model is as follows:

A large field of view anti-fog observation window for an overhead reactor, including a plane mirror;

The inside of the plane mirror is provided with a plano-concave lens; A cavity, the side of the plane mirror away from the plano-concave lens is provided with an oil inlet and a first oil outlet at preset intervals.

Preferably, a second oil outlet is also provided between the oil inlet and the first oil outlet.

Preferably, the oil inlet is connected to the oil outlet of the heat exchanger through a pipeline.

Preferably, the oil entering the cavity through the oil inlet is glycerin.

Preferably, the surface of the cavity is smooth.

Preferably, the diameter of the plane mirror is 40-60cm.

Preferably, the diameter of the plane mirror is 50cm.

Preferably, the thickness of the plane mirror is greater than the thickness of the plano-concave lens.

Preferably, the length of the plano-concave lens is 6-10 cm.

Preferably, the length of the plano-concave lens is 8cm.

According to the above-mentioned technical scheme, based on the large-view anti-fog observation window of the top-mounted reactor, using the large-view anti-fog observation window of the top-mounted reactor can timely dispose of fog or even water droplets inside the observation window, In order not to affect the observation; at the same time, during the reaction process, the brightness can be increased through the axicon lens to facilitate observation, and the field of view can be widened through the plano-concave lens to achieve overall observation; it has the advantages of simple operation and low cost.

Description of drawings

Figure 1 is the front view of the large field of view anti-fog observation window of the overhead reactor;

Fig. 2 is a side view of the large field of view anti-fog observation window of the overhead reactor;

Figure 3 is a top view of the large field of view anti-fog observation window of the overhead reactor;

Fig. 4 is a diagram of the diameter of the corresponding halo when the initial beam diameter is a set value;

Fig. 5 is a diagram of the diameter of the corresponding halo when the initial beam diameter is another set value;

Fig. 6 is the calculation schematic diagram of the radius of curvature of the plano-concave lens;

Fig. 7 is the schematic diagram of the refraction of the plano-concave lens;

Fig. 8 is a schematic diagram of calculating the refraction angle of a plano-concave lens.

Explanation of reference signs

plane mirror 1; plano-concave lens 2; axicon lens 3; cavity 4; oil inlet 5;

The first oil outlet 7; the second oil outlet 6.

Detailed ways

The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present utility model, and are not intended to limit the embodiments of the present utility model.

In the description of the present application, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating relative importance, or implicitly indicating the quantity of indicated technical features. Therefore, unless otherwise stated, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; "plurality" means two or more. The term "comprising" and any variations thereof mean that one or more other features, units, components and/or combinations thereof are non-exclusively included, may exist or be added.

In addition, unless otherwise clearly specified and limited, the terms "mounted", "connected" and "connected" should be interpreted in a broad sense, such as fixed connection, detachable connection, or integral connection; mechanical connection , can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

The utility model provides a large field of view anti-fog observation window for an overhead reactor, as shown in Figure 1-3, the large field of view anti-fog observation window for an overhead reaction kettle includes a plane mirror 1;

The inside of the plane mirror 1 is provided with a plano-concave lens 2, the inside of the plane-concave lens 2 is provided with an axicon lens 3, and the tapered end of the axicon lens 3 faces outside, and the plane mirror 1, the plano-concave lens 2 and the The axicon lens 3 jointly surrounds a cavity 4 , and the side of the plane mirror 1 away from the plano-concave lens 2 is provided with an oil inlet 5 and a first oil outlet 7 at preset intervals. Wherein, in a preferred embodiment, the plane mirror 1, the plano-concave lens 2 and the axicon lens 3 are arranged coaxially so as to better observe the reaction conditions in the reactor.

According to the above-mentioned technical scheme, based on the large-view anti-fog observation window of the top-mounted reactor, using the large-view anti-fog observation window of the top-mounted reactor can timely dispose of fog or even water droplets inside the observation window, In order not to affect the observation; at the same time, during the reaction process, the brightness can be increased through the axicon lens to facilitate observation, and the field of view can be widened through the plano-concave lens to achieve overall observation; it has the advantages of simple operation and low cost.

In the embodiment of the present utility model, a second oil outlet 6 is also provided between the oil inlet 5 and the first oil outlet 7, so that when the glycerin in the cavity 4 needs to be discharged, Can be discharged quickly. Preferably, in practical applications, the number of oil outlets can be set according to actual needs, as long as the observation effect of the large-view anti-fog observation window of the overhead reactor is not affected.

In the embodiment of the present utility model, the oil inlet 5 is connected to the oil outlet of the heat exchanger through a pipeline, so that in practical application, when the water mist needs to be removed, the heated glycerin can be quickly passed through the heat exchanger. input into the cavity 4 to quickly remove the fog without affecting the observation effect. In a preferred embodiment, the surface of the cavity 4 is a smooth surface, so as to facilitate the rapid discharge of glycerin without affecting the observation effect of the large field of view anti-fog observation window of the overhead reactor, and without easy to remain.

In the embodiment of the utility model, the diameter of the plane mirror 1 is 40-60 cm. Preferably, the diameter of the plane mirror 1 is 50cm. Of course, in practical applications, the diameter of the plane mirror 1 can also be appropriately enlarged according to the size of the reactor, so that the two can match, and it is sufficient to ensure that the reaction in the entire reactor can be observed. Wherein, the large field of vision anti-fog observation window of the overhead reactor is installed through the conventional method of installing a flat mirror in the prior art, the difference is that the large field of view anti-fog observation window of the overhead reaction kettle in the utility model is installed on the reactor to ensure that the bottom of the entire reaction kettle can be observed through the plano-concave lens 2.

In the embodiment of the utility model, the thickness of the plane mirror 1 is greater than the thickness of the plano-concave lens 2 . Wherein, as shown in FIG. 7 , the thickness of the plano-concave lens 2 refers to the thickness of the middle part.

In the embodiment of the utility model, the length of the plano-concave lens 2 is 6-10 cm. Preferably, the plano-concave lens 2 has a length of 8 cm. In the actual application process, it can also be set according to the size of the reactor, as long as it can be ensured that the bottom of the entire reactor can be observed through the plano-concave lens 2 .

In the utility model, the realization principle of the axicon lens 3 is: the traditional condenser lens can focus the light on a certain point on the optical axis, but the axicon lens 3 can be used to focus the light to a certain point on the optical axis in the utility model. at multiple points on the optical axis. The beam generated by the axicon 3 passes through the optical axis, and when the distance between the axicon 3 and the material increases, the diameter of the formed halo will also increase, while the thickness of the halo remains unchanged. The beam has the characteristics of a Bessel beam, and the light intensity distribution along the propagation direction of the beam will not change.

Specifically, as shown in Figure 4-5, the initial beam diameter d _b ; the thickness t of the halo is usually easy to determine, which is equivalent to half of the initial beam diameter, and the diameter of the halo is proportional to the distance; As the distance L to the image increases, the diameter d _r of the light ring will increase, and as the distance L from the output end of the axicon lens 3 to the image decreases, the diameter of the light ring will also decrease. As shown in equation (1), the diameter of the halo is related to twice the length and the tangent of the product of the refractive index (n) and the α angle.

d _r ＝2Ltan[(n-1)α] formula (1)

Specifically, taking a 5t reactor with a diameter of 1.8m and a cylinder height of 1.8m as an example, then:

d _r ＝2Ltan[(n-1)α]＝2×1.8×tan(0.492α)

To illuminate the whole reactor, take d _r =1.8m, then 0.492a=26°33', and α=53°58'.

Also n _D(50) = 1.4785, α = 55°29'; n _D(200) = 1.411, α = 64°36'; then α = 64°36'.

Therefore, in the actual application process, according to the situation, by changing the angle of the incident light, the material situation in the reactor can be completely seen.

In the present utility model, the center of the plano-concave lens 2 is thin, the edge is thick, and is concave, and its realization principle is specifically as follows:

(1) The radius of curvature of the plano-concave lens 2

Since the plano-concave lens 2 is the same as the plano-convex lens, for the convenience of measurement, a plano-convex lens with the same curvature is selected for calculation here. Specifically, measure the length d=8cm and thickness h=2cm of the plano-convex lens plane with a vernier caliper, measure 3 groups to obtain the average value, and calculate the curvature radius of the plano-convex lens.

Among them, since the plano-convex lens is a part of a cylinder, the radius of the cylinder is r, the length of the plane of the plano-convex lens is d, and the thickness is h. As shown in Figure 6, the plano-convex lens is the thickened part of the black border, according to Pythagorean theorem:

(2) Measure the refractive index of the plano-concave lens 2

Put the plano-concave lens 2 on the dial to adjust the angle of the incident light, so that the light enters from the straight side of the lens, and observe the refracted light. Since the refracted light will refract again when it exits from the curved side, the outgoing light cannot be directly measured, and it needs to be recorded during measurement. The intersection point of the outgoing light and the curved edge of the lens, connect the incident point and the intersection point, and extend it to intersect with the edge of the dial to obtain the size of the refraction angle. The schematic diagram is shown in Figure 7.

Specifically, n ₁ sini ₁ =n ₂ sini ₂ , since the plano-concave lens 2 is in the air, so n ₂ =1, n=n _l =sini ₂ /sini _l , repeat three times to obtain the average n=1.492.

Further, as shown in Figure 8, the incident rays AB and CB which are very close to the main axis and parallel to the main optical axis are normal lines, and the incident angle α is very small. If the refractive index of the lens is n, the refraction angle is approximately nα.

故得OF=f concave, OC=r,

so get

Further, the reaction temperature in the reactor is approximately 150°C, and the design temperature limit here is 50-200°C. Generally, 4.5×10 ⁴ is used as the temperature change constant. The value obtained by this rough calculation may have a slight error, but it is of reference value. In other words, the refractive index decreases with the increase of temperature, and the refractive index changes by about 0.00045 for every 1 degree Celsius change. We can calculate the refractive index corrected to 20°C by the following formula 2:

_nD(20) = 1.492

n _D(t) ＝n _D(20) -0.00045(t-20℃)

When t=50℃, n _D(50) =1.4785; f _concave =10.4493(cm)

When t=200℃, n _D(200) =1.411; f _concave =12.1655(cm) (Formula ₂ )

When the object is a virtual object, when the distance from the plano-concave lens 2 to the virtual object is twice the focal length, it becomes an inverted, equal-sized virtual image, and the image and the object are on the opposite side of the lens (u=2f);

When the object is a virtual object, and the distance from the plano-concave lens 2 to the virtual object is beyond twice the focal length, an inverted and reduced virtual image will be formed, and the image and the object are on the opposite side of the lens (u>2f);

To sum up, when the reactor is observed with a plano-concave lens, it will always be a reduced image.

The utility model will be described in detail through examples below, but the protection scope of the utility model is not limited thereto.

Example 1

As shown in Figures 1-3, it is implemented using the large-view anti-fog observation window of the overhead reactor described in the present invention, specifically, the large-view anti-fog observation window of the overhead reactor includes a plane mirror 1;

The inside of the plane mirror 1 is provided with a plano-concave lens 2, the inside of the plane-concave lens 2 is provided with an axicon lens 3, and the tapered end of the axicon lens 3 faces outside, and the plane mirror 1, the plano-concave lens 2 and the The axicon lens 3 jointly surrounds a cavity 4 , and the side of the plane mirror 1 away from the plano-concave lens 2 is provided with an oil inlet 5 and a first oil outlet 7 at preset intervals.

Specifically, a second oil outlet 6 is also provided between the oil inlet 5 and the first oil outlet 7, and the oil inlet 5 is connected to the oil outlet of the heat exchanger through a pipeline, and through the The oil that enters the cavity 4 from the oil inlet 5 is glycerin, the surface of the cavity 4 is smooth, the diameter of the plane mirror 1 is 50 cm, and the length of the plano-concave lens 2 is 8 cm.

In the actual application process, the large-view anti-fog observation window of the overhead reactor is installed on the top of the reactor, and then by changing the angle of incident light (such as a flashlight), the material situation in the reactor can be completely seen .

After testing, based on the large-view anti-fog observation window of the overhead reactor, it can be disposed of in time when fogging or even water droplets are formed inside the observation window, so as not to affect the observation; at the same time, during the reaction process, the cone can The lens increases the brightness and is convenient for observation, while the concave lens can broaden the field of view and achieve overall observation; it has the advantages of simple operation and low cost.

The large field of view anti-fog observation window of the top-mounted reactor provided by the utility model can be disposed of in time when fogging or even water droplets are formed inside the observation window, so as not to affect the observation; at the same time, during the reaction process, the axicon lens can The brightness is increased to facilitate observation, and the field of view can be broadened through the concave lens to achieve overall observation; it has the advantages of simple operation and low cost.

The preferred implementation of the present utility model has been described in detail above in conjunction with the accompanying drawings, however, the present utility model is not limited thereto. Within the scope of the technical concept of the utility model, various simple modifications can be made to the technical solution of the utility model. In order to avoid unnecessary repetition, the utility model will not further explain various possible combinations. However, these simple modifications and combinations should also be regarded as the content disclosed by the utility model, and all belong to the protection scope of the utility model.

Claims (10)

1. A large field of view anti-fog observation window for an overhead reactor, characterized in that, the large field of vision anti-fog observation window for an overhead reactor comprises a plane mirror (1); The inside of the plane mirror (1) is provided with a plano-concave lens (2). (1), the plano-concave lens (2) and the axicon lens (3) are jointly surrounded by a cavity (4), and the plane mirror (1) is at a preset interval away from the side of the plano-concave lens (2) An oil inlet (5) and a first oil outlet (7) are provided. 2. The large field of view anti-fog observation window for the overhead reactor according to claim 1, characterized in that a second oil inlet (5) and the first oil outlet (7) are also provided with Oil outlet (6). 3. The large-view anti-fog observation window for the overhead reactor according to claim 1 or 2, wherein the oil inlet (5) is connected to the oil outlet of the heat exchanger through a pipeline. 4. The large field of view anti-fog observation window for overhead reactor according to claim 3, characterized in that, the oil entering the cavity (4) through the oil inlet (5) is glycerin. 5. The large field of view anti-fog observation window for overhead reactor according to claim 1, characterized in that, the surface of the cavity (4) is a smooth surface. 6. The large field of view anti-fog observation window for overhead reactor according to claim 5, characterized in that, the diameter of the plane mirror (1) is 40-60 cm. 7. The large field of view anti-fog observation window for overhead reactor according to claim 6, characterized in that, the diameter of the plane mirror (1) is 50 cm. 8. The large field of view anti-fog observation window for overhead reactor according to claim 1, characterized in that, the thickness of the plane mirror (1) is greater than the thickness of the plano-concave lens (2). 9. The large field of view anti-fog observation window for overhead reactor according to claim 1, characterized in that the length of the plano-concave lens (2) is 6-10 cm. 10. The large field of view anti-fog observation window for overhead reactor according to claim 9, characterized in that the length of the plano-concave lens (2) is 8 cm.

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