CN202126203U

CN202126203U - Shell side inlet anti-impact device of shell-and-tube heat exchanger

Info

Publication number: CN202126203U
Application number: CN2011202062292U
Authority: CN
Inventors: 王维刚; 倪红梅; 刘金梅
Original assignee: Northeast Petroleum University
Current assignee: Northeast Petroleum University
Priority date: 2011-06-19
Filing date: 2011-06-19
Publication date: 2012-01-25
Anticipated expiration: 2021-06-19

Abstract

A shell side inlet anti-impact device of a shell-and-tube heat exchanger mainly solves the problems that resistance to impact force is poor and accidents are prone to happen when a plate type anti-impact device is adopted in the prior art. The shell side inlet anti-impact device is characterized in that an arc anti-impact plate (3) consists of an arc surface raised in the middle and lateral lugs (8) of which two ends are used for fixing; a plurality of parallel grid holes (7) are distributed at intervals on the arc surface of the arc anti-impact plate (3); the lower end of a rib plate (5) is symmetrically fixed and connected on two lateral lugs (8); the upper end of the rib plate (5) acts as the end connected with the inner wall of the shell-and-tube heat exchanger; the lower end of a pull rod (4) is symmetrically fixed and connected at the lower arc of the arc anti-impact plate (3); and the upper end of the pull rod (4) acts as the end connected with an inlet connection tube of the shell-and-tube heat exchanger. The shell side inlet anti-impact device can reduce the resistance loss at a fluid inlet, and enable fluid to enter a tube bundle area uniformly, thus decreasing vibration of equipment, improving the impact resistance of equipment and ensuring the stable operation of equipment.

Description

Shell-and-tube heat exchanger shell side import checking motion

Technical field

The utility model relates to a kind of servicing unit that is used for technical field of heat exchangers, specifically, relates to a kind of import checking motion that is used on the shell-and-tube heat exchanger.

Background technology

For shell-and-tube heat exchanger, stronger near the fluid scouring that the tube bank at fluid inlet place is born than the tube bank at other position, high-velocity fluid wash away direct corrosion heat exchanger tube and tube sheet, therefore checking motion need be installed at the fluid inlet place.Traditional method is to add flat board or taper impingement baffle, and its weak point is that anti-impact force is poor, and the vibration amplitude under the pressure frequent fluctuation is bigger, is prone to obscission takes place, and causes the damaged leakage of heat exchanger tube, thereby causes tremendous loss.

Summary of the invention

In order to solve the prior art problem that provides in the background technology; The utility model provides a kind of shell-and-tube heat exchanger shell side import checking motion; This kind shell-and-tube heat exchanger shell side import checking motion can reduce the drag losses at fluid inlet place, makes fluid evenly get into the tube bank district, thereby reduces vibration equipment; The impact resistance of raising equipment is guaranteed the stable operation of device.

The technical scheme of the utility model is: this kind shell-and-tube heat exchanger shell side import checking motion; Comprise arc impingement baffle, pull bar and gusset; Wherein, Said arc impingement baffle constitutes some parallel grid holes spaced apart on the arc surface of said arc impingement baffle by picking up the ears of being used for fixing of the arc surface of intermediate projections and two ends; The lower end symmetry of said gusset be fixedly connected on two pick up the ears on, the upper end conduct of gusset and the inwall link of shell-and-tube heat exchanger; The lower end symmetry of said pull bar is fixedly connected on the circular arc place, bottom of arc impingement baffle, the upper end conduct of pull bar and the link of the entrance sleeve of shell-and-tube heat exchanger.

The utlity model has following beneficial effect: this kind shell-and-tube heat exchanger shell side import checking motion is through installing arc impingement baffle with holes in shell side import department, and the fluid intake resistance is little, and fluid evenly gets into tube bank, can alleviate fluid exchange heat pipe and impact.Impingement baffle is done camber, can reduce the amplitude that is made the impingement baffle shake by pressure oscillation widely, the stress that has also alleviated gusset and impingement baffle, housing commissure is simultaneously concentrated.

Description of drawings:

Fig. 1 is the scheme of installation of the utility model.

Fig. 2 is the structural representation of the utility model.

Fig. 3 is an A-A cutaway view among Fig. 2.

Fig. 4 is the vertical view of the said arc impingement baffle of the utility model.

1-housing among the figure, the 2-inlet tube, 3-arc impingement baffle, the 4-pull bar, the 5-gusset, the 6-heat exchanging water pipe, 7-grid hole, 8-picks up the ears.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is described further:

Combine shown in Figure 3 like Fig. 2; This kind shell-and-tube heat exchanger shell side import checking motion; Comprise arc impingement baffle 3, pull bar 4 and gusset 5, wherein, as shown in Figure 4; Said arc impingement baffle 38 constitutes some parallel grid holes 7 spaced apart on the arc surface of said arc impingement baffle 3 by picking up the ears of being used for fixing of the arc surface of intermediate projections and two ends; The lower end symmetry of said gusset 5 is fixedly connected on two and picks up the ears on 8 the upper end conduct of gusset 5 and the inwall link of shell-and-tube heat exchanger; The lower end symmetry of said pull bar 4 is fixedly connected on the circular arc place, bottom of arc impingement baffle 3, the upper end conduct of pull bar 4 and the link of the entrance sleeve of shell-and-tube heat exchanger.

The flow velocity of tube bank district moment is the highest because fluid gets into, and impact failure power is maximum, i.e. the suffered impact of the heat exchanger tube of below, fluid intake place is the strongest.After this device is connected in shell-and-tube heat exchanger shell side import department, can convection cell cushions and lead, can resist fluid impact effectively.Impingement baffle is done camber, is in order to improve the rigidity of impingement baffle anti-impact force, and when pressure oscillation constantly changes the suffered impulsive force of impingement baffle, the jitter amplitude of impingement baffle will reduce greatly.Simultaneously fluid through the hole on the impingement baffle after disturbance each other, form turbulent flow, reduce fluid exchange heat pipe and directly impact, increase the uniformity that fluid gets into tube bank, improve heat exchange efficiency.

Claims

1. shell-and-tube heat exchanger shell side import checking motion; Comprise arc impingement baffle (3), pull bar (4) and gusset (5); It is characterized in that: said arc impingement baffle (3) constitutes some parallel grid holes (7) spaced apart on the arc surface of said arc impingement baffle (3) by pick up the ears (8) that the arc surface of intermediate projections and two ends are used for fixing; The lower end symmetry of said gusset (5) is fixedly connected on two pick up the ears (8), the upper end conduct of gusset (5) and the inwall link of shell-and-tube heat exchanger; The lower end symmetry of said pull bar (4) is fixedly connected on the circular arc place, bottom of arc impingement baffle (3), the upper end conduct of pull bar (4) and the link of the entrance sleeve of shell-and-tube heat exchanger.