CN210268320U

CN210268320U - Plate pass shunting plate heat exchanger

Info

Publication number: CN210268320U
Application number: CN201921160064.2U
Authority: CN
Inventors: 李永堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-04-07
Anticipated expiration: 2029-07-23

Abstract

The utility model relates to a board shunting plate heat exchanger, including the casing with install in the casing and the more than two heat transfer modules of arranging from top to bottom, supplementary heat transfer board quantity is n1 in the heat transfer module of the superiors, supplementary heat transfer board quantity is n2 in its lower floor heat transfer module, supplementary heat transfer board quantity is n3 in the heat transfer module of the next floor again, analogize so on, n1, n2, n3 represent the natural number, and have at least the quantity of supplementary heat transfer board in one deck heat transfer module not zero; in the heat exchange module provided with the auxiliary heat exchange plate, the connecting point between the main plate inlet pipe and the inlet end collecting pipe is higher than the connecting point between the auxiliary plate inlet pipe and the inlet end collecting pipe. Liquid phase including oil in the plate process fluid is intensively converged by the inlet end collecting pipe and then is introduced into the independent auxiliary plate, so that the liquid phase discharge is accelerated, the content of the liquid phase and the oil passing through the main body heat exchange plate is greatly reduced, and the integral heat exchange efficiency of the device is improved.

Description

Plate pass shunting plate heat exchanger

Technical Field

The utility model relates to a plate heat transfer device mainly is applied to the heat transfer device that the board journey is steam (especially oiliness steam), for example condensing equipment, evaporation plant and fluid heating device.

Background

Existing heat exchangers, such as condensers, that condense a gas phase into a liquid phase, mainly include a shell-and-plate type (absorbing heat from water in a shell side), an air-cooled type (using air at normal temperature as cooling energy), and an evaporative cooling type (absorbing heat by water evaporation). In the heat exchange process, the liquid phase (condensate) in the plate pass (belonging to the tube pass) is gradually increased. In addition, some media contain oil, which tends to form an oil film on the inner surface of the heat exchanger. The formation and accumulation of condensate and oil film will seriously affect the medium flow speed in the heat exchanger, resulting in the reduction of heat exchange efficiency. In compressor systems, the formation and accumulation of condensate and oil films also results in increased compressor power consumption due to increased discharge pressure. Especially in places with high ambient temperature, the high discharge pressure of the compressor can also cause safety hazards.

Chinese patent application publication No. CN104132557A relates to "an intermediate liquid discharge type high efficiency condensing system. The intermediate liquid drainage is implemented at the tail end of the front-stage heat exchanger, and the liquid film drainage is accelerated by the measure, so that the heat exchange coefficient is increased. And effectively improve the utilization ratio of the heat exchange surface of the heat exchanger, and ensure that the preceding-stage heat exchanger is always in a high-efficiency heat exchange state. Through use, the intermediate liquid drainage measure has a certain effect on the aspect of improving the heat exchange efficiency, but as the method is to lead the condensate out of the heat exchanger, and the part of the lead-out medium is generally a gas-liquid mixed phase, high heat energy is still stored, so that the heat energy utilization rate is reduced on one hand, and the operation load of the refrigeration system is increased on the other hand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a board journey shunting plate heat exchanger is provided, with the liquid phase including oil in the board journey fluid through advance the end collector concentrate converge after introducing solitary supplementary slab, accelerate liquid phase discharge, reduce the liquid phase and the oily content through the main part heat exchanger fin by a wide margin to improve the whole heat exchange efficiency of device.

The technical scheme of the utility model as follows:

the plate pass divided-flow plate heat exchanger comprises a shell and more than two heat exchange modules which are arranged in the shell and arranged up and down, wherein each heat exchange module comprises a plurality of main heat exchange plates and a certain number of auxiliary heat exchange plates which are arranged in parallel, the medium inlet ends of the heat exchange plates are provided with inlet end collecting pipes, the medium outlet ends of the heat exchange plates are provided with outlet end collecting pipes, and the inlet end collecting pipes are connected with the main heat exchange plates through main plate inlet pipes and are connected with the auxiliary heat exchange plates through auxiliary plate inlet pipes; the outlet end collecting pipe of the last heat exchange module is connected with the inlet end collecting pipe of the next heat exchange module through a connecting pipe, and the heat exchange module heat exchanger is characterized in that: the number of the auxiliary heat exchange plates in the heat exchange module at the uppermost layer is n1, the number of the auxiliary heat exchange plates in the heat exchange module at the next layer is n2, the number of the auxiliary heat exchange plates in the heat exchange module at the next layer is n3, and so on, n1, n2 and n3 represent natural numbers, and the number of the auxiliary heat exchange plates in at least one layer of the heat exchange modules is not zero; in the heat exchange module provided with the auxiliary heat exchange plate, the connecting point between the main plate inlet pipe and the inlet end collecting pipe is higher than the connecting point between the auxiliary plate inlet pipe and the inlet end collecting pipe.

Preferably, the number of auxiliary heat exchange plates in each heat exchange module from top to bottom is gradually increased.

Preferably, the connection point between the main plate inlet pipe and the inlet header is located in the middle of the inlet header in the height direction, and the connection point between the auxiliary plate inlet pipe and the inlet header is located on the bottom side of the inlet header.

Preferably, the auxiliary heat exchange plates in each heat exchange module are arranged on the same side face of the heat exchanger.

The utility model has the advantages of:

first, the utility model discloses utilized the confluence and gas-liquid separation function of inlet header, most gaseous phase (steam) flow through main part heat transfer slab, and most liquid phase (including oil) gets into supplementary heat transfer slab. The liquid phase flow is accelerated by the confluence effect, so that the heat conductivity coefficient of the liquid phase is improved, the discharge speed of the liquid phase is increased, and the heat exchange efficiency is integrally improved. And the liquid phase and oil components (oil films) in the main body heat exchange plate are obviously reduced, so that the heat exchange effect is obviously improved. Under the condition of heat transfer volume is equaled in the realization, utilize the utility model discloses can reduce the heat exchanger specification by a wide margin to reduce heat transfer device's manufacturing, fortune dimension cost by a wide margin, and reduce heat transfer device area.

In the optimized technical scheme, more auxiliary heat exchange plates are arranged in the next module than the previous module. The design ensures that the gradually increased liquid phase output can be timely shunted in the heat exchange process of the plate-pass fluid flowing from top to bottom, so that the heat exchanger can always run in a balanced manner, and a more optimized heat exchange effect is obtained.

Three, the utility model discloses supplementary heat transfer slab quantity is less and install in the same side of heat exchanger, and more convenient to detach deoils, and a large amount of main heat transfer slabs deposit the oil mass and obtain effective control, have prolonged complete machine maintenance cycle.

Drawings

Fig. 1 is a schematic diagram of the structure and the operation principle of the embodiment of the present invention. In fig. 1, only one primary and one secondary heat exchanger plate are shown in each module due to the shielding relationship.

Fig. 2 is a schematic view of another view structure according to an embodiment of the present invention. Fig. 2 belongs to the left-hand schematic view with respect to fig. 1.

The housing is omitted from both figures.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1 and 2, the present embodiment includes a housing and a three-layer heat exchange module installed in the housing. Each heat exchange module comprises a plurality of main heat exchange plates 4 and at least one auxiliary heat exchange plate 5 which are arranged in parallel, the medium inlet ends of the heat exchange plates are provided with inlet end collecting pipes, and the medium outlet ends of the heat exchange plates are provided with outlet end collecting pipes. The inlet header is connected with the main heat exchange plate through a main plate inlet pipe 3 and is connected with the auxiliary heat exchange plate through an auxiliary plate inlet pipe 15. The main heat exchange plate is connected with an outlet header through a main plate outlet pipe 6 and the auxiliary heat exchange plate through an auxiliary plate outlet pipe 16 respectively.

Different heat exchange modules can be arranged in the same shell, and also can be arranged in different shells.

The bottom ends of the parallel mounting fingers are parallel and level and are arranged in parallel. Generally, all the main heat exchanger plates have the same height, all the auxiliary heat exchanger plates have the same height and are equal to or lower than the main heat exchanger plates, and the preferred scheme is that the auxiliary heat exchanger plates are lower than the main heat exchanger plates.

In this embodiment, the upper inlet header 2 of the upper heat exchange module is connected to the inlet manifold 1, the upper outlet header 7 of the upper heat exchange module is connected to the middle inlet header 9 of the middle heat exchange module through the first connection pipe 8, the middle outlet header 14 of the middle heat exchange module is connected to the lower inlet header 12 of the lower heat exchange module through the second connection pipe 13, and the lower outlet header 10 of the lower heat exchange module is connected to the outlet manifold 11. In the scheme, n1=1, n2=2 and n =3, as shown in fig. 2. Fig. 2 is a schematic structural diagram, and the number of the main heat exchange plates is much larger than that of the auxiliary heat exchange plates in actual manufacturing.

In the heat exchange module provided with the auxiliary heat exchange plate, the connecting point between the main plate inlet pipe 3 and the inlet end collecting pipe is higher than the connecting point between the auxiliary plate inlet pipe 15 and the inlet end collecting pipe, and the connecting point between the auxiliary plate inlet pipe 15 and the inlet end collecting pipe is higher than the connecting point between the auxiliary plate inlet pipe 15 and the auxiliary heat exchange plate. Generally, the connection point between the main plate inlet pipe 3 and the inlet header is located in the middle of the inlet header in the height direction, and the connection point between the auxiliary plate inlet pipe 15 and the inlet header is located on the bottom side of the inlet header.

The above is an optimized embodiment of the present invention. Which meets the requirement that the number of auxiliary heat exchange plates in each heat exchange module from top to bottom is gradually increased (i.e. meets n3 > n2 > n 1). Other specific technical solutions meeting the present requirements include: among a plurality of heat exchange modules arranged from top to bottom, the uppermost layer is not provided with auxiliary heat exchange plates, and other layers are provided with auxiliary heat exchange plates. The utility model discloses a common technical scheme examples: in a plurality of heat exchange modules arranged up and down, only the middle layer is provided with an auxiliary heat exchange plate, and the upper layer and the lower layer are not provided with auxiliary heat exchange plates.

In actual manufacture, the auxiliary heat exchange plates are generally installed on the same side of the heat exchange module and close to the same side of the heat exchanger shell, so that replacement or oil removal cleaning can be conveniently implemented only for the auxiliary heat exchange plates.

The sheet of the utility model is formed by compounding two same metal plates, and a medium channel is arranged between the two metal plates.

Claims

1. The plate pass divided-flow plate heat exchanger comprises a shell and more than two heat exchange modules which are arranged in the shell and arranged up and down, wherein each heat exchange module comprises a plurality of main heat exchange plates and a certain number of auxiliary heat exchange plates which are arranged in parallel, the medium inlet ends of the heat exchange plates are provided with inlet end collecting pipes, the medium outlet ends of the heat exchange plates are provided with outlet end collecting pipes, and the inlet end collecting pipes are connected with the main heat exchange plates through main plate inlet pipes and are connected with the auxiliary heat exchange plates through auxiliary plate inlet pipes; the outlet end collecting pipe of the last heat exchange module is connected with the inlet end collecting pipe of the next heat exchange module through a connecting pipe, and the heat exchange module heat exchanger is characterized in that: the number of the auxiliary heat exchange plates in the heat exchange module at the uppermost layer is n1, the number of the auxiliary heat exchange plates in the heat exchange module at the next layer is n2, the number of the auxiliary heat exchange plates in the heat exchange module at the next layer is n3, and so on, n1, n2 and n3 represent natural numbers, and the number of the auxiliary heat exchange plates in at least one layer of the heat exchange modules is not zero; in the heat exchange module provided with the auxiliary heat exchange plate, the connecting point between the main plate inlet pipe and the inlet end collecting pipe is higher than the connecting point between the auxiliary plate inlet pipe and the inlet end collecting pipe.

2. The plate-pass, split-flow plate heat exchanger of claim 1, wherein: the number of the auxiliary heat exchange plates in each heat exchange module from top to bottom is gradually increased.

3. The plate pass split plate heat exchanger of claim 1 or 2, wherein: the connection point between the main plate sheet inlet pipe and the inlet end collecting pipe is positioned in the middle of the inlet end collecting pipe in the height direction, and the connection point between the auxiliary plate sheet inlet pipe and the inlet end collecting pipe is positioned at the bottom side of the inlet end collecting pipe.

4. The plate pass split plate heat exchanger of claim 1 or 2, wherein: and the auxiliary heat exchange plates in each heat exchange module are arranged on the same side surface of the heat exchanger.

5. The plate-pass, split-flow plate heat exchanger of claim 3, wherein: and the auxiliary heat exchange plates in each heat exchange module are arranged on the same side surface of the heat exchanger.