CN111318057A

CN111318057A - Overflow pipe

Info

Publication number: CN111318057A
Application number: CN202010237308.3A
Authority: CN
Inventors: 刘涛
Original assignee: China Nerin Engineering Co Ltd
Current assignee: China Nerin Engineering Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-06-23

Abstract

The invention relates to the technical field of fluid fittings, in particular to an overflow pipe which comprises a sampling pipe, a descending pipe and a flange connecting pipe, wherein the sampling pipe horizontally extends into container equipment, the descending pipe is communicated with the end part of the sampling pipe, the flange connecting pipe is communicated with the end part, far away from the sampling pipe, of the descending pipe, one end, far away from the descending pipe, of the sampling pipe is closed, the descending pipe is arranged obliquely downwards, the flange connecting pipe extends out of the container equipment and is used for being fixedly connected with the container equipment, and an overflow through hole is formed in the top of the sampling pipe in. The overflow through hole is formed in the top of the sampling tube, heavy solids in the working substance liquid move downwards, the remaining clear liquid finally enters the sampling tube under the influence of negative pressure at the overflow through hole, separation of the heavy solids and light gas components in the working substance liquid is achieved, the descending tube is obliquely downwards provided with a certain liquid level difference, the flow rate of the overflow liquid is increased, separation of gas entering the descending tube at the position and gathering of the gas are facilitated, the gas is upwards discharged from the overflow through hole, and gas is prevented from being entrained in the overflow liquid which finally flows out.

Description

Overflow pipe

Technical Field

The invention relates to the technical field of fluid fittings, in particular to an overflow pipe.

Background

The overflow pipe is generally a device for keeping a certain liquid level and quickly removing redundant liquid, and is generally arranged on the container equipment at a position close to the liquid level, and the liquid material at the top layer overflows out of the container equipment by utilizing the principle of a communicating vessel.

The designer often neglects the influence of overflow pipe structural design to container equipment performance under the current situation, and the structural design of overflow pipe is simpler, only sets up a section flange nozzle stub on container equipment casing, and the both ends opening of flange nozzle stub, unnecessary liquid flows out the container equipment through the flange nozzle stub.

However, the overflow pipe of the conventional structure adversely affects the distribution of the working fluid in the container equipment, and even degrades the working performance in the container equipment. For the condition that gas is entrained in the working fluid, because the flow rate of the liquid close to the sampling port at the overflow pipe is too high, a large amount of entrained gas cannot be separated in time, and the entrained gas overflows through the overflow pipe, the expense of the liquid treatment process after overflow is increased.

Disclosure of Invention

The invention aims to provide an overflow pipe, which solves the problem that the existing overflow pipe is poor in gas-liquid separation effect.

The invention provides an overflow pipe, which comprises a sampling pipe horizontally extending into container equipment, a downcomer communicated with the end part of the sampling pipe, and a flange connecting pipe communicated with the end part of the downcomer far away from the sampling pipe, wherein one end of the sampling pipe far away from the downcomer is closed, the downcomer is obliquely and downwards arranged, the flange connecting pipe extends out of the container equipment and is used for being fixedly connected with the container equipment, and the top of the sampling pipe is axially provided with an overflow through hole.

The overflow pipe provided by the invention has the following beneficial effects: according to the invention, the overflow through hole is formed in the top of the sampling tube, when the working fluid rises and passes through the top of the sampling tube, the heavier solids in the working fluid move downwards deviating from the original track, the lighter gas components move upwards under the influence of self buoyancy, the remaining clear liquid finally enters the sampling tube under the influence of negative pressure at the overflow through hole, so that the separation of the heavier solids and the lighter gas components in the working fluid is realized, the descending tube is obliquely downwards provided with a certain liquid level difference, the flow rate of the overflow fluid is increased, the gas entering the descending tube is favorably separated at the position and is gathered upwards and discharged from the overflow through hole, and the gas is prevented from being entrained in the overflow fluid finally flowing out.

In addition, the overflow pipe provided by the invention can also have the following additional technical characteristics:

furthermore, the longitudinal section of the overflow through hole is long-strip-shaped, and the overflow through hole and the central shaft of the sampling tube are arranged in parallel.

Further, the overflow hole is axisymmetrical to the central axis of the container device.

Further, the flow area of the overflow through hole is not smaller than the flow area inside the sampling pipe.

Furthermore, a port is formed in one end, far away from the descending pipe, of the sampling pipe, and an end cover matched with the port is arranged on the port.

Further, the flanged connection pipe and the sampling pipe are arranged in parallel.

Furthermore, the outer wall of the flange connecting pipe is sleeved and fixedly connected with a socket flange, and the socket flange is used for being fixedly connected with the outer wall of the container equipment.

Further, the inclination angle of the downcomer and the horizontal plane is 45 degrees.

Further, the cross section of the sampling tube is circular.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front view of an overflow tube of an embodiment of the invention mounted on a container apparatus;

FIG. 2 is a cross-sectional view of the overflow tube of FIG. 1 at plane A-A;

FIG. 3 is a top view of an overflow tube of an embodiment of the present invention mounted on a receptacle means;

10. a container device; 20. a sampling tube; 21. an overflow through hole; 30. a down pipe; 40. a flange adapter; 50. an end cap; 60. and (4) a socket flange.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 3, an overflow pipe according to an embodiment of the present invention includes a sampling pipe 20 horizontally extending into a container apparatus 10, a down pipe 30 communicating with an end of the sampling pipe 20, and a flange joint pipe 40 communicating with an end of the down pipe 30 far from the sampling pipe 20.

The container device 10 is cylindrical, a mounting opening is formed in the position, close to the top, of the outer wall of the container device 10, the overflow pipe enters the container device 10 from the mounting opening, the sampling pipe 20, the downcomer 30 and the flange adapter 40 are connected in an integrated and closed mode, the sampling pipe 20 horizontally extends into the container, one end, far away from the downcomer 30, of the sampling pipe 20 is closed, the downcomer 30 is arranged obliquely and downwards, the flange adapter 40 extends out of the container device 10 and is fixedly connected with the container device 10 so as to enable the whole overflow pipe to be mounted and fixed on the container device 10, and an overflow through hole 21 is formed in the top of the sampling pipe 20 in the axial direction.

The working process of the invention is as follows: the working substance liquid in the container device 10 flows over the sampling tube 20 from bottom to top, when the working substance liquid rises and passes through the top of the sampling tube 20, heavier solids in the working substance liquid move downwards to be far away from the sampling tube 20, lighter gas components move upwards to enter a gas phase space of the container device 10 under the influence of self buoyancy, and the rest clear liquid continues to move around the surface of the sampling tube 20 under the influence of negative pressure at the overflow through hole 21, finally overflows from the overflow through hole 21 of the sampling tube 20 to enter the sampling tube 20, then flows to the flange connecting tube 40 through the descending tube 30, and finally overflows out of the container device 10.

From the above description, the beneficial effects of the present invention are: according to the invention, the overflow through hole 21 is arranged at the top of the sampling tube 20, when the working substance liquid rises and passes through the top of the sampling tube 20, heavier solids in the working substance liquid move downwards deviating from the original track, lighter gas components move upwards under the influence of self buoyancy, the remaining clear liquid finally enters the sampling tube 20 under the influence of negative pressure at the overflow through hole 21, so that the separation of the heavier solids and the lighter gas components in the working substance liquid is realized, the descending tube 30 is obliquely downwards provided with a certain liquid level difference to increase the flow rate of the overflow liquid, so that the gas entering the descending tube is favorably separated at the position and gathered upwards to be discharged from the overflow through hole 21, and the gas in the overflow liquid which finally flows out is avoided from being entrained with the gas.

In the embodiment of the present invention, the longitudinal section of the overflow through hole 21 is a long strip, the overflow through hole 21 extends from one end to the other end of the sampling tube 20, and the overflow through hole 21 and the central axis of the sampling tube 20 are parallel to each other. The overflow through hole 21 is a long hole, so that the working substance liquid uniformly enters along the periphery of the overflow through hole 21, the flow rate and the pressure of the working substance liquid passing through the overflow hole are consistent, and the interference of the overflow pipe on the working substance liquid in the container device 10 during working is ensured to be small.

In an embodiment of the invention, the overflow through hole 21 is axisymmetric to the central axis of the container apparatus 10. The overflow through holes 21 are axially symmetrical along the central axis of the container device 10, so that the interference of the overflow pipe on the working liquid in the container device 10 is small when the overflow pipe works, and the performance of the container device 10 is prevented from being influenced.

In an embodiment of the invention, the flow area of the overflow through hole 21 is not smaller than the flow area inside the sampling tube 20.

In the embodiment of the present invention, a port is opened at one end of the sampling tube 20 away from the downcomer 30, and an adaptive end cover 50 is provided on the port. The end of the sampling tube 20 is provided with a detachable end cap 50, and the interior of the sampling tube 20 is conveniently maintained after the end cap 50 is detached.

In the embodiment of the present invention, the flanged connection tube 40 and the sampling tube 20 are disposed parallel to each other. Thus, the tube center elevation of the coupon 20 is greater than the tube center elevation of the stub 40.

In the embodiment of the present invention, the outer wall of the flanged connection pipe 40 is sleeved and fixedly connected with a socket flange 60, and the socket flange 60 is used for being fixedly connected with the outer wall of the container device 10. The mating flange is provided on the outer wall of the container device 10, and the socket flange 60 is connected to the mating flange, which facilitates the installation and maintenance of the overflow pipe.

In the embodiment of the present invention, the angle of inclination of the downcomer 30 to the horizontal is 45 degrees. The downcomer 30 is obliquely downwards provided with a certain liquid level difference, so that the flow speed of overflow liquid can be increased when the overflow liquid passes through, and the risk of blockage of a pipeline due to precipitation and aggregation of solid components is reduced; on the other hand, the descending pipe 30 is arranged in an inclined downward structure, which is beneficial to leading the gas entering the descending pipe to be separated and gathered upwards and discharged from the overflow hole, and avoiding the gas from being entrained in the finally flowing overflow liquid.

In an embodiment of the present invention, the sampling tube 20 is circular in cross-section. The cross section of the sampling tube 20 is a circular tube, so that when the working fluid rises through the sampling tube 20, the movement locus of the heavier solid and lighter gas components in the working fluid is changed under the influence of the arc shape of the surface of the sampling tube 20, wherein the heavier solid components move away from the original locus in a direction away from the sampling tube 20.

In summary, the invention provides an overflow pipe, which has the following beneficial effects: the overflow through hole 21 is arranged at the top of the sampling tube 20, when the working fluid rises to pass through the top of the sampling tube 20, heavier solids in the working fluid move downwards by deviating from the original track, lighter gas components move upwards under the influence of self buoyancy, the remaining clear fluid finally enters the sampling tube 20 under the influence of negative pressure at the overflow through hole 21, the separation of the heavier solids and the lighter gas components in the working fluid is realized, a certain liquid level difference is arranged at the inclined downward position of the descending tube 30, the flow rate of the overflow fluid is increased, the gas entering the descending tube is favorably separated at the position and is collected upwards to be discharged from the overflow through hole 21, and the gas is prevented from being entrained in the overflow fluid which finally flows out.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an overflow pipe, its characterized in that, including the level stretch into the inside sampling tube of container equipment, with the downcomer of the tip intercommunication of sampling tube and with the downcomer is kept away from the flange takeover of the tip intercommunication of sampling tube, the one end that the sampling tube was kept away from the downcomer is sealed, the downcomer slope sets up downwards, the flange takeover stretches out container equipment outer and is used for with container equipment fixed connection, an overflow through-hole is seted up along the axial in the top of sampling tube.

2. An overflow tube as claimed in claim 1, wherein the longitudinal cross-section of the overflow through hole is elongated, and the overflow through hole and the central axis of the sampling tube are arranged parallel to each other.

3. An overflow tube as in claim 1, wherein the overflow aperture is axisymmetric to a central axis of the receptacle means.

4. An overflow tube as defined in claim 1, wherein the flow area of the overflow through-hole is not less than the flow area inside the sampling tube.

5. An overflow tube as claimed in claim 1, wherein the end of the sampling tube remote from the downcomer is ported with a suitable end cap.

6. An overflow tube as claimed in claim 1, wherein the flanged connection and the sampling tube are arranged parallel to one another.

7. An overflow tube as claimed in claim 1, wherein the outer wall of the flanged connection is sleeved and fixedly connected with a female flange for fixed connection with the outer wall of the container means.

8. An overflow tube as claimed in claim 1, wherein the angle of inclination of the downcomer to the horizontal is 45 degrees.

9. An overflow tube as claimed in claim 1, wherein the sampling tube is circular in cross-section.