CN210426179U

CN210426179U - Horizontal falling film liquid distributor with variable spacing

Info

Publication number: CN210426179U
Application number: CN201921072662.4U
Authority: CN
Inventors: 周亚素; 王树信; 颜子雄; 胡昊; 李晨星
Original assignee: Donghua University
Current assignee: Donghua University
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-04-28
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to a horizontal falling liquid film liquid distributor of variable interval, including feed liquor pipe, cloth liquid pipe, connecting pipe and sealed head, the feed liquor pipe is T type, perpendicular port be inlet, both sides parallel and level port be the liquid outlet, the liquid outlet of feed liquor pipe both sides interval in proper order, can dismantle, scalable ground sealing connection has a plurality of cloth liquid pipes and a plurality of connecting pipe, sealed head can dismantle sealing connection with the cloth liquid pipe in the outside, is equipped with on the cloth liquid pipe and drips and drenches the hole. The utility model discloses can adjust spraying the interval according to actual need, conveniently dismantle and clean and maintain.

Description

Horizontal falling film liquid distributor with variable spacing

Technical Field

The utility model belongs to the technical field of liquid distributor, especially, relate to a horizontal falling liquid film liquid distributor of variable interval.

Background

The horizontal falling film heat exchanger is efficient and energy-saving, and is widely applied to the fields of seawater desalination, sewage treatment, refrigeration and air conditioning, mechanical vapor recompression and the like. In the horizontal falling film heat exchange process, a fluid medium is sprayed to the outer wall surface of the horizontal tube through the liquid distributor to form a liquid film, the outer wall surface of the horizontal tube exchanges heat with fluid, part of the fluid is evaporated, and the rest of the fluid flows downwards along the outer wall of the tube under the action of gravity. One of the conditions for the efficient operation of the horizontal tube falling film heat exchanger is that a fluid medium forms a stable and uniform liquid film outside a tube, and the thinner the liquid film is, the better the liquid film thickness is, and simultaneously, dry spots cannot appear. The horizontal falling film liquid distributor directly influences the distribution and thickness of the liquid film on the outer wall surface of the tube, thereby influencing the heat exchange performance and the service life of the horizontal falling film heat exchanger.

The traditional horizontal falling film liquid distributor is mostly a spray pipe type liquid distributor, is simple in structure, low in price and simple to operate, is obtained by the design of spray intervals according to falling film wavelength correlation calculation, is difficult to match with actual engineering application, is integrated, is difficult to adjust the spray intervals and is difficult to replace and disassemble.

Disclosure of Invention

The utility model aims to solve the technical problem that a variable interval horizontal falling liquid film liquid distributor is provided can adjust the interval that sprays according to actual need, and convenient the dismantlement is cleaned and is maintained.

The utility model provides a technical scheme that its technical problem adopted provides a variable interval level falling liquid film liquid distributor, including feed liquor pipe, cloth liquid pipe, connecting pipe and sealed head, the feed liquor pipe is the T type, and perpendicular port is inlet, both sides horizontal port and is the liquid outlet, the liquid outlet of feed liquor pipe both sides is interval in proper order, can dismantle, scalable ground sealing connection has a plurality of cloth liquid pipes and a plurality of connecting pipe, sealed head can dismantle sealing connection with the cloth liquid pipe in the outside, be equipped with on the cloth liquid pipe and drip and drench the hole.

The liquid inlet pipe is connected with the liquid distribution pipe, the liquid distribution pipe is connected with the connecting pipe, and the connecting pipe is connected with the sealing head through a threaded structure.

The outer pipe wall of the connecting pipe is provided with bidirectional scale marks increasing from the center to numerical values at two ends along the axial direction, the outer pipe wall of the liquid distribution pipe is provided with bidirectional arrows at two ends along the axial direction, and the bidirectional arrows and the bidirectional scale marks are parallel and level along the axial direction.

The relative displacement length of one rotation between the liquid distribution pipe and the connecting pipe is equal to the integral scale length of the bidirectional scale mark.

The liquid inlet pipe, the connecting pipe and the sealing head are provided with external threads, and the liquid distribution pipe is provided with internal threads matched with each other.

Advantageous effects

The utility model discloses in, can drip the distance of drenching between the hole to adjacent through the relative length adjustment between cloth liquid pipe and the connecting pipe and adjust to can adjust spraying the interval according to the practical application needs of horizontal falling film liquid distributor. And the detachable connecting structure is arranged among the liquid inlet pipe, the liquid distribution pipe, the connecting pipe and the sealing head, so that the liquid inlet pipe, the liquid distribution pipe, the connecting pipe and the sealing head are convenient to detach for cleaning and maintenance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the connection between the liquid distribution tube and the connection tube.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

As shown in fig. 1 and 2, the variable-interval horizontal falling film liquid distributor comprises a liquid inlet pipe 1, a liquid distribution pipe 2, a connecting pipe 3 and a sealing head 6.

The whole liquid inlet pipe 1 is T-shaped, the outer diameter is 18mm, the vertical port is a liquid inlet, the parallel and level ports on the two sides are liquid outlets, and the liquid outlets on the two sides are provided with external threads. The liquid outlet of 1 both sides of feed liquor pipe is according to practical application liquid distribution needs interval in proper order, detachably, but telescopic adjustment ground sealing connection has a plurality of cloth liquid pipe 2 and a plurality of connecting

pipe

3, 2 both ends of cloth liquid pipe are equipped with the internal thread respectively, 3 both ends of connecting pipe are equipped with the external screw thread respectively, 2 external diameters of cloth liquid pipe are 20mm, the external diameter of connecting pipe 3 is 18mm, between feed liquor pipe 1 and the cloth liquid pipe 2, through the helicitic texture connection between cloth liquid pipe 2 and the connecting pipe 3. The sealing head 6 is provided with external threads and is in sealing connection with the liquid distribution pipe 2 at the outermost side through a thread structure. The liquid distribution pipe 2 is provided with a dripping hole 7 with the diameter of 1 mm.

The outer pipe wall of the connecting pipe 3 is provided with bidirectional scale marks 5 increasing from the center to the numerical values of the two ends along the axial direction, the outer pipe wall of the liquid distribution pipe 2 is provided with bidirectional arrows 4 towards the two ends along the axial direction, and the bidirectional arrows 4 are flush with the bidirectional scale marks 5 along the axial direction. The length of the relative displacement between the liquid distribution pipe 2 and the connecting pipe 3 rotating for one circle is equal to the integral scale length of the bidirectional scale mark 5, namely 1 mm.

The installation method of the variable-spacing horizontal falling film liquid distributor during use comprises the following steps: fixed mounting feed liquor pipe 1, connect cloth liquid pipe 2, adjust through rotatory cloth liquid pipe 2 and drip and drench the interval, and guarantee that feed liquor pipe 1's two-way scale mark 5 aligns with cloth liquid pipe 2's two-way arrow point 4 of level, install connecting pipe 3 and other cloth liquid pipes 2 again, rotatory connecting pipe 3 is adjusted and is dripped and drench the interval, guarantee that two-way arrow point 4 on the cloth liquid pipe 2 aims at two-way scale mark 5 on the connecting pipe 3, so on, install cloth liquid pipe 2 and connecting pipe 3 in turn and adjust the cloth liquid interval, make and satisfy the technological requirement, at cloth liquid pipe 2's terminal rotatory installation sealing head 6.

Claims

1. A horizontal falling film liquid distributor with variable intervals is characterized in that: including feed liquor pipe (1), cloth liquid pipe (2), connecting pipe (3) and sealed head (6), feed liquor pipe (1) is T type, perpendicular port and is inlet, both sides parallel and level port for the liquid outlet, the liquid outlet of feed liquor pipe (1) both sides interval in proper order, can dismantle, scalable ground sealing connection has a plurality of cloth liquid pipe (2) and a plurality of connecting pipe (3), sealed head (6) can dismantle sealing connection with cloth liquid pipe (2) in the outside, be equipped with on cloth liquid pipe (2) and drip and drench hole (7).

2. The variable-pitch horizontal falling film liquid distributor according to claim 1, wherein: the liquid inlet pipe (1) is connected with the liquid distribution pipe (2), the liquid distribution pipe (2) is connected with the connecting pipe (3), and the connecting pipe (3) is connected with the sealing head (6) through a threaded structure.

3. The variable-pitch horizontal falling film liquid distributor according to claim 2, wherein: the outer pipe wall of connecting pipe (3) is equipped with two-way scale mark (5) that increase to both ends numerical value from the center along the axial, the outer pipe wall of cloth liquid pipe (2) is equipped with two-way arrow point (4) to both ends along the axial, two-way arrow point (4) and two-way scale mark (5) are along the axial parallel and level.

4. The variable-pitch horizontal falling film liquid distributor according to claim 3, wherein: the relative displacement length of one rotation between the liquid distribution pipe (2) and the connecting pipe (3) is equal to the integral scale length of the bidirectional scale mark (5).

5. The variable-pitch horizontal falling film liquid distributor according to claim 2, wherein: the liquid inlet pipe (1), the connecting pipe (3) and the sealing head (6) are provided with external threads, and the liquid distribution pipe (2) is provided with internal threads matched with each other.