JP2012166185A - Gas-liquid mixing nozzle device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas-liquid mixing nozzle device having a slot element reducing a flow rate in which a liquid enters a gas-liquid mixing concave portion.SOLUTION: The gas-liquid mixing nozzle device includes a base 102 having a first to a third side surfaces, a sealing element 104, a throttle element, and a nozzle 108. The base includes a gas passage 200 and a liquid passage 300 provided in a concave state on the first side surface, and a liquid housing concave portion 400 and a gas-liquid mixing concave portion 500 respectively provided in a concave state on the second side surface and the third side surface. The liquid passage passes through from the first side surface to the liquid housing concave portion, the gas passage and the liquid housing concave portion pass through respectively from the first side surface and the second side surface to the gas-liquid mixing concave portion, and the liquid housing concave portion communicates to the gas-liquid mixing concave portion at a first part. The sealing element is provided at an opening of the liquid housing concave portion, and the throttle element projects from the sealing element to the first part, and reduces the cross-sectional area. Further, the nozzle is joined to an opening of the gas-liquid mixing concave portion.

Description

  The present invention relates to a nozzle device, and more particularly to a gas-liquid mixing nozzle device having a throttle element that reduces the flow rate of liquid entering a gas-liquid mixing recess.

  In a normal nozzle device, the main function is to accelerate the fluid contained therein and discharge it from the nozzle at a high speed, and the fluid employed in the nozzle may be a gas or a liquid.

  Also, a common nozzle device generally includes a base for fixing the nozzle, and provides a flow path necessary for the fluid therein, and allows the fluid provided to the fluid supply source to pass through the flow path in the base. And arrive at the nozzle.

  However, when the fluid employed in the nozzle device is a liquid, the liquid contains a certain amount of impurities, so that a situation in which deposits are generated and clogged often occurs after a long period of use. The deposit is generally deposited at the nozzle outlet. Therefore, in order to solve the clogging situation, it is necessary to remove and clean the nozzle. Since the internal space of the nozzle is narrow, it is difficult to clean the nozzle.

  Therefore, since the present invention has a throttle element that can reduce the flow rate of liquid entering the gas-liquid mixing recess, the probability that impurities in the liquid enter the gas-liquid mixing recess can be lowered, and further, the impurities in the liquid clog the nozzle An object of the present invention is to provide a gas-liquid mixing nozzle device capable of reducing the above.

  According to an embodiment of the present invention, a gas-liquid mixing nozzle device is provided. The gas-liquid mixing nozzle device includes a base, a sealing element, a throttle element, and a nozzle. The base includes a first side surface, a second side surface, and a third side surface, and includes a gas passage and a liquid passage recessed in the first side surface, a liquid containing recess recessed in the second side surface, 3 further includes a gas-liquid mixing recess recessed in the side surface. The gas passage and the liquid passage respectively transmit gas and liquid, and the liquid storage recess has a first portion and a second portion that communicate with each other, and the second portion is located on the second side surface. Adjacently provided, the liquid passage penetrates from the first side surface to the liquid storage recess that mainly stores the liquid. In addition, the gas passage and the liquid storage recess respectively penetrate the gas-liquid mixing recess from the first side surface and the second side surface, and the liquid storage recess communicates with the gas-liquid mixing recess in the first portion. The sealing element is provided in the opening of the second portion of the liquid storage recess, and the throttle element is joined to the sealing element and protrudes into the first portion of the liquid storage recess, thereby Reduce the cross-sectional area. The nozzle is joined to the opening of the gas-liquid mixing recess so that the liquid and gas in the gas-liquid mixing recess can enter the internal space of the nozzle.

  The present invention has an advantage that a throttle element is used to reduce the probability that impurities in the liquid enter the gas-liquid mixing recess, and deposits due to impurities in the liquid are mainly attached to the throttle element. Therefore, in the case of clogging, it is only necessary to remove and clean the throttle element. Compared with nozzle cleaning, the structure of the throttle element is relatively simple, so that the process of cleaning protection of the gas-liquid mixing nozzle device can be reduced. And save considerable time and cost.

  For a better understanding of the aspects of the invention, please refer to the following detailed description in conjunction with the corresponding drawings. It should be noted that according to industry standard practice, the various features in the drawings are not shown to scale. In fact, the size of the various features can be arbitrarily expanded or reduced to clearly illustrate the following examples. Related drawings will be described as follows.

1 is a schematic cross-sectional view showing a gas-liquid mixing nozzle device according to an embodiment of the present invention. 1B is a schematic cross-sectional view showing a cross section cut along the cutting line 1B-1B in FIG. 1A of the gas-liquid mixing nozzle device according to one embodiment of the present invention. 4 is a schematic cross-sectional view showing a gas-liquid mixing nozzle device according to another embodiment of the present invention. It is a cross-sectional schematic diagram which shows the cross section cut | disconnected along the cutting line 2B-2B in FIG. 2A of the gas-liquid mixing nozzle apparatus by the other Example of this invention. It is a curve figure which shows the distribution uniformity of the water flow rate corresponding to a different total liquid flow rate of the some gas-liquid mixing nozzle apparatus by the comparative example of this invention. It is a curve figure which shows the distribution uniformity of the water flow rate corresponding to a different total liquid flow rate of the some gas-liquid mixing nozzle apparatus by Example 1 of this invention. It is a curve figure which shows the distribution uniformity of the water flow rate corresponding to a different total liquid flow rate of the some gas-liquid mixing nozzle apparatus by Example 2 of this invention. It is a curve figure which shows the distribution uniformity of the water flow rate corresponding to a different total liquid flow rate of the some gas-liquid mixing nozzle apparatus by Example 3 of this invention.

  FIG. 1A is a schematic cross-sectional view showing a gas-liquid mixing nozzle device according to an embodiment of the present invention. The gas-liquid mixing nozzle device 100 includes a base 102, a sealing element 104, a throttle element 106, and a nozzle 108. In the present embodiment, the base 102 includes a first side surface 102a, a second side surface 102b, and a third side surface 102c, and the base 102 is essentially a regular cube. Specifically, Each side of the base 102 is all flat, and any two adjacent sides are all perpendicular to each other. However, in other embodiments, the base may have other geometric structures and is not limited to this embodiment, for example, the base may include an arcuate curved surface. In addition, in order to provide appropriate strength and fix the nozzle 108, the base 102 may be made of a metal material. In order to avoid corrosion due to rust, the base 102 may be further made of a material such as stainless steel.

  The base 102 shown in FIG. 1A further includes a gas passage 200, a liquid passage 300, a liquid storage recess 400, and a gas-liquid mixing recess 500. The gas passage 200 and the liquid passage 300 are recessed in the first side surface 102a of the base 102, and the gas passage 200 and the liquid passage 300 transmit gas and liquid to the first side surface 102a. In certain embodiments, the gas passage 200 and the liquid passage 300 may be joined to a gas supply source and a liquid supply source, respectively, using one or more pipes, and transmit the gas and liquid to the nozzle 108. . Further, the gas passage 200 and the liquid passage 300 can be manufactured using any conventional method. For example, the gas passage 200 and the liquid passage are formed by drilling the first side surface 102a of the base 102 using a drill. 300 can be manufactured.

  The liquid storage recess 400 is provided in the second side surface 102b of the base 102, and has a first portion 402 and a second portion 404 that communicate with each other as shown in FIG. 1A. The second portion 404 is provided adjacent to the second side surface 102b, and the first portion 402 is relatively separated from the second side surface 102b. The liquid passage 300 penetrates from the first side surface 102 a of the base 102 to the liquid storage recess 400. More specifically, the liquid passage 300 penetrates from the first side surface 102 a to the second portion 404 of the liquid storage recess 400. However, in other embodiments, the liquid passage 300 may penetrate the first portion 402 of the liquid containing recess 400 from the first side surface 102a. In the embodiment shown in FIG. 1A, the liquid storage recess 400 is mainly used to store the liquid provided in the liquid passage 300. In certain embodiments, the liquid containing recess 400 can be manufactured using any conventional method, such as the perforation.

  The gas / liquid mixing recess 500 is recessed in the third side surface 102 c of the base 102. The gas passage 200 and the liquid storage recess 400 penetrate the gas-liquid mixing recess 500 from the first side surface 102a and the second side surface 102b of the base 102, respectively. To communicate with the gas-liquid mixing recess 500. In the embodiment shown in FIG. 1A, the gas from the gas passage 200 and the liquid from the liquid passage 300 enter the nozzle 108 after being sufficiently mixed in the gas-liquid mixing recess 500.

  The sealing element 104 is provided in the opening 404 a of the second portion 404 of the liquid containing recess 400. The sealing element 104 is provided mainly to facilitate cleaning of deposits accumulated on the throttle element 106. In a particular embodiment, the sealing element 104 may be provided in the opening 404a of the second portion 404 of the liquid containing recess 400 by a screwing or engagement scheme. In view of the familiarity of those skilled in the art of the installation (screwing or engagement) of the sealing element 104, it will not be further described here.

  In the embodiment shown in FIG. 1A, the throttle element 106 is joined to the sealing element 104, and the throttle element 106 further protrudes into the first portion 402 of the liquid containing recess 400, so that the cross-sectional area of the first portion 402 is increased. Reduce. Referring to FIGS. 1A and 1B, FIG. 1B is a schematic cross-sectional view showing a cross section taken along the cutting line 1B-1B in FIG. 1A. In this embodiment, the throttle element 106 is a columnar body, and the wall surface of the columnar body and the first portion 402 of the liquid containing recess 400 forms a flow path as shown in FIG. The accommodated liquid enters the gas-liquid mixing recess 500 through this flow path. In this embodiment, the throttle element 106 is joined to the sealing element 104 by a welding method. However, in a specific embodiment, the throttle element 106 may be joined to the sealing element 104 by a screwing method or an engagement method.

  As for the nozzle 108 in the embodiment shown in FIG. 1A, it is joined to the opening 500a of the gas-liquid mixing recess 500, that is, it is joined to the third side surface 102c of the base 102. Can enter the internal space 108 a of the nozzle 108.

  Further, in the embodiment shown in FIG. 1A, the first portion 402 of the liquid containing recess 400 gradually increases in the direction of the first portion 402 away from the second portion 404 (as indicated by the arrow A). It further includes an inclined surface 402a to be reduced. The gas passage 200 further includes a third portion 202 and a fourth portion 204 provided adjacent to the first side surface 102 a of the base 102, and the gas-liquid mixing recess 500 is formed in the third portion 202. Communicate with. The third portion 202 of the gas passage 200 further includes an inclined surface 202a that gradually reduces the diameter of the third portion 202 along the direction away from the fourth portion 204 (as indicated by arrow B). The inclined surface 402a and the inclined surface 202a are provided so as to expedite the liquid flowing mainly through the first portion 402 of the liquid containing recess 400 and the gas flowing through the third portion 202 of the gas passage 200. The liquid and gas that have entered the liquid mixing recess 500 are mixed more rapidly.

  FIG. 2A is a schematic cross-sectional view illustrating a gas-liquid mixing nozzle device according to another embodiment of the present invention, and FIG. 2B is a cross-sectional view of the gas-liquid mixing nozzle device according to another embodiment of the present invention. It is a cross-sectional schematic diagram which shows the cross section cut | disconnected along 2B. 2A and 2B, the structure of the gas-liquid mixing nozzle device 100a and the relative relationship between the structures are all similar to those of the gas-liquid mixing nozzle device 100 shown in FIGS. 1A and 1B. Therefore, only the different parts will be described below.

  In the gas-liquid mixing nozzle device 100a, the throttle element 110 replaces the throttle element 106 which is a columnar body in the gas-liquid mixing nozzle device 100. The throttle element 110 is a choke line having an end 110a, a first passage 110b, and a second passage 110c. The first passage 110b is recessed in the end portion 110a, the second passage 110c is recessed in the side surface of the choke line, and the first passage 110b and the second passage 110c are as shown in FIG. 2A. A flow path is formed in Further, since the side surface of the choke line is in contact with the wall surface of the first portion 402 of the liquid containing recess 400, a cross-sectional structure as shown in FIG. 2B is formed, so that the liquid from the liquid containing recess 400 is the first. Enters the gas-liquid mixing recess 500 through the passage 110b. More specifically, the liquid stored in the liquid storage recess 400 first enters the first passage 110b via the second passage 110c, and then gas-liquid mixing via the first passage 110b. Entering the recess 500, that is, the liquid in the liquid storage recess 400 enters the gas-liquid mixing recess 500 through the flow path formed by the first passage 110b and the second passage 110c.

  A plurality of the gas-liquid mixing nozzle devices 100 or gas-liquid mixing nozzle devices 100a are arranged vertically, and these gas-liquid mixing nozzle devices 100 or gas-liquid mixing nozzle devices 100a are arranged in the same gas supply source and in the same liquid. When connected in parallel to the supply source, the phenomenon of non-uniform distribution of the liquid flow rate due to the hydrostatic pressure difference can be effectively suppressed, and the principle is explained as follows.

  Considering the case where the liquid passes through a small-diameter channel (a small-diameter channel where the first portion 402 and the gas-liquid mixing recess 500 are joined as shown in FIGS. 1A and 2A), the liquid has this caliber. Before and after passing through a small flow path, energy is preserved, and is displayed as follows in a mathematical formula.

が内部エネルギーであり、

が圧力エネルギーであり、

が運動エネルギーであり、

が位置エネルギーであり、

がシステム（つまり口径の小さい流路）仕事量であり、

が熱量入力であり、かつ

が定数である。 In addition,

Is internal energy,

Is pressure energy,

Is kinetic energy,

Is the potential energy,

Is the work load of the system (that is, the small diameter channel),

Is the heat input, and

Is a constant.

  If the system is simplified and the loss of internal energy due to potential energy, system work, heat input, and frictional force therein is not taken into account, the above equation (1) is simplified as follows.

とし、仮に流体が前記口径の小さい流路に入る前の流路の断面積は、口径の小さい流路の断面積よりはるかに大きいとすれば、つまり仮に

とすることができるため、以上の式（２）は、下記のように簡略化された。

If the cross-sectional area of the flow path before the fluid enters the small-diameter flow path is much larger than the cross-sectional area of the small-diameter flow path, that is,

Therefore, the above equation (2) has been simplified as follows.

であり、なお、

が液体流量であり、

が口径の小さい流路の断面積である。従って、以上の式（３）は、下記のように調整することができる。 Also,

And,

Is the liquid flow rate,

Is the cross-sectional area of the channel having a small diameter. Therefore, the above equation (3) can be adjusted as follows.

が大きい。なお、口径の小さい流路の断面積が小さければ小さいほど、圧力差

の変動による流量の変化

も小さい。 As can be seen from the above equation (4), the smaller the cross-sectional area of the small-diameter channel, the smaller the pressure difference required for the system to maintain the same flow rate.

Is big. Note that the smaller the cross-sectional area of the channel with the smaller diameter, the smaller the pressure difference.

In flow rate due to fluctuations

Is also small.

  According to the above-described principle, when a plurality of gas-liquid mixing nozzle devices 100 or gas-liquid mixing nozzle devices 100a are arranged vertically as described above, the first portion is controlled by the throttle element 106 or the throttle element 110 therein. The cross-sectional area of 402 can be reduced to reduce the flow rate variation due to the hydrostatic pressure difference between the plurality of gas-liquid mixing nozzle devices 100 or the gas-liquid mixing nozzle devices 100a. Therefore, the entire flow distribution variation of the system composed of the plurality of gas-liquid mixing nozzle devices 100 or the gas-liquid mixing nozzle devices 100a can be suppressed within an allowable range.

  Hereinafter, the effects generated after applying the above principle will be described more specifically by comparing actual examples with comparative examples.

(Comparative example)
First, 12 gas-liquid mixing nozzle devices were arranged vertically and numbered, and the arrangement height of the 12 gas-liquid mixing nozzle devices and the corresponding hydrostatic pressure difference are shown in the following table. In addition, the height and the hydrostatic pressure difference were all based on the gas-liquid mixing nozzle device having the number 12.

  In this comparative example, the gas-liquid mixing nozzle is similar in structure to the structure shown in FIGS. 1A and 1B, but does not include the throttle element 106, and the first portion 402 shown in FIG. The flow path having a small diameter to which the recess 500 is joined is different in that the diameter is 6.6 mm.

  The twelve gas-liquid mixing nozzles are connected in parallel to the same gas supply source and the same liquid supply source, and then six different liquid total flow rates are given to the twelve gas-liquid mixing nozzles, The total liquid flow rates are 25 l / min (l / min), 37 l / min, 50 l / min, 75 l / min, 100 l / min, and 125 l / min, respectively. When different liquid total flow rates were given, the water flow rate corresponding to each gas-liquid mixing nozzle device was recorded as shown in FIG.

  As can be seen from FIG. 3, the closer the gas-liquid mixing nozzle device is to the upper side, the smaller the water flow rate. In addition, the lower the total flow rate, the greater the relative difference between the plurality of gas-liquid mixing nozzle devices. It should be noted that when the total flow rate was lowered to 25 l / min and 37 l / min, the four and two gas-liquid mixing nozzle devices could not eject the liquid, respectively.

Example 1
In the first embodiment, the related experimental conditions adopted are the same as in the comparative example, but the gas-liquid mixing nozzle device of the first embodiment employs the structure shown in FIGS. 1A and 1B, that is, the throttle element 106. It differs from a comparative example by including. The throttle element 106 is a columnar body having a straight diameter of 5 mm.

  The experimental results are recorded in FIG. As can be seen from FIG. 4, the water flow distribution uniformity of the plurality of gas-liquid mixing nozzle devices is considerably superior to the comparative example in which the throttle element 106 is not attached. However, when the total flow rate is lowered to 25 l / min, the two gas-liquid mixing nozzle devices still cannot eject the liquid.

(Example 2)
In Example 2, the related experimental conditions adopted are the same as in the comparative example, but the gas-liquid mixing nozzle device of Example 2 adopts the structure shown in FIGS. 2A and 2B, that is, the choke line. This is different from the comparative example in that the diameter of the first passage 110b of the choke line is 4 mm.

  The experimental results are recorded in FIG. As can be seen from FIGS. 4 and 5, the water flow distribution uniformity of the plurality of gas-liquid mixing nozzle devices is similar to that of the first embodiment.

(Example 3)
In Example 3, the related experimental conditions adopted are the same as in the comparative example, but the gas-liquid mixing nozzle device of Example 3 adopts the structure shown in FIGS. 2A and 2B, that is, the choke line. This is different from the comparative example in that the diameter of the first passage 110b of the choke line is 3 mm.

  The experimental results are recorded in FIG. As can be seen from FIGS. 4, 5, and 6, Example 3 was further improved as compared to the water flow distribution uniformity of the plurality of gas-liquid mixing nozzle devices shown in FIGS. 4 and 5. Even when the total flow rate is lowered to 25 l / min, the gas-liquid mixing nozzle devices of Nos. 1 and 2 located above can still eject the liquid.

  In the present invention, the embodiment has been disclosed as described above, but this does not limit the present invention, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is limited by the description of the following claims.

DESCRIPTION OF SYMBOLS 100 ... Gas-liquid mixing nozzle apparatus, 102 ... Base, 102b ... 2nd side surface, 104 ... Sealing element, 108 ... Nozzle, 110 ... Throttle element, 110b ... First passage, 200 ... Gas passage, 202a ... Inclined surface, DESCRIPTION OF SYMBOLS 300 ... Liquid channel | path, 402 ... 1st part, 404 ... 2nd part, 500 ... Gas-liquid mixing recessed part, 1B-1B ... Cutting line, A ... Arrow, 100a ... Gas-liquid mixing nozzle apparatus, 102a ... 1st Side surface 102c ... Third side surface 106 ... Throttle element 108a ... Internal space 110a ... End portion 110c ... Second passage 202 ... Third portion 204 ... Fourth portion 400 ... Liquid containing recess 402a ... inclined surface, 404a ... opening, 500a ... opening, 2B-2B ... cutting line, B ... arrow

Claims (7)

A first side surface, a second side surface, and a third side surface, including a gas passage that is recessed in the first side surface and transmits gas, and a liquid that is recessed in the first side surface and transmits liquid A passage, and a first portion and a second portion that are recessed in the second side surface and communicate with each other, the second portion is adjacent to the second side surface, and the liquid passage is A liquid containing recess that penetrates from the first side surface and stores the liquid, and is recessed in the third side surface, and the gas passage and the liquid containing recess are respectively provided in the first side surface and the second side surface. A base that further includes a gas-liquid mixing recess that penetrates from a side surface, and wherein the liquid-receiving recess communicates with the gas-liquid mixing recess in the first portion;
A sealing element provided at the opening of the second portion of the liquid-containing recess;
A throttle element that is joined to the sealing element and protrudes into the first portion of the liquid containing recess, thereby reducing a cross-sectional area of the first portion; and the liquid and the gas in the gas-liquid mixing recess A gas-liquid mixing nozzle device comprising: a nozzle joined to an opening of the gas-liquid mixing recess so as to enter the space.   The throttle element is a columnar body, and the wall surface of the columnar body and the first portion of the liquid storage recess forms a flow path, and the liquid stored in the liquid storage recess passes through the flow path. The gas-liquid mixing nozzle device according to claim 1 which enters a gas-liquid mixing crevice. The throttle element is a choke line having an end portion, a first passage recessed at the end portion, and a second passage recessed at a side surface of the choke line, A passage and the second passage form a flow path, and a side surface of the choke line is in contact with a wall surface of the first portion of the liquid containing recess;
The gas-liquid mixing nozzle device according to claim 1, wherein the liquid stored in the liquid storage recess enters the gas-liquid mixing recess via the flow path.   The gas-liquid mixing nozzle device according to claim 1, wherein the throttle element is joined to the sealing element by a method selected from the group consisting of a welding method, a screwing method, and an engagement method.   2. The gas-liquid mixing nozzle device according to claim 1, wherein the sealing element is provided at an opening of the second portion of the liquid storage recess by a method selected from the group consisting of a screwing method and an engagement method.   2. The gas-liquid mixing nozzle device according to claim 1, wherein the first portion of the liquid containing recess further includes an inclined surface that gradually reduces the diameter of the first portion along a direction away from the second portion. . The gas passage further includes a third portion and a fourth portion provided adjacent to the first side surface, and communicates with the gas-liquid mixing recess at the third portion;
2. The gas-liquid mixing nozzle device according to claim 1, wherein the third portion further includes an inclined surface that gradually reduces the diameter of the third portion along a direction away from the fourth portion.

Images