CN215810447U

CN215810447U - Tubular heat exchanger back-driving type online flushing device

Info

Publication number: CN215810447U
Application number: CN202122041013.1U
Authority: CN
Inventors: 姚杰新; 冯关琴
Original assignee: Zhengzhou Saiwei Mechanical And Electrical Equipment Co ltd
Current assignee: Zhengzhou Saiwei Mechanical And Electrical Equipment Co ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-02-11
Anticipated expiration: 2031-08-27

Abstract

The utility model provides a back-drive type online flushing device of a tubular heat exchanger, which comprises a liquid inlet pipe, a hydraulic steering mechanism, a liquid outlet pipe, a heat exchange pipe flushing sprayer and a power source, wherein the hydraulic steering mechanism comprises a switching chamber, a liquid storage chamber, a transmission chamber and a transmission mechanism, the switching chamber is provided with a liquid inlet, a power input port and two mounting holes, the liquid storage chamber is communicated with the liquid inlet pipe through the liquid inlet, the liquid outlet pipe is rotatably arranged in the two mounting holes, the liquid outlet of the liquid outlet pipe extends out of the switching chamber, the liquid outlet pipe is communicated with the liquid storage chamber through an opening on the side wall, the transmission chamber is positioned outside the tail end of the liquid storage chamber, the power input port is communicated with the transmission chamber, the transmission mechanism comprises a turbine and a worm, the turbine is arranged at the tail end of the liquid outlet pipe, and the power source inputs power from the power input port and drives the worm to rotate. The tubular heat exchanger back-drive type online flushing device has the advantages of scientific design, simple structure, low failure rate and long service life.

Description

Tubular heat exchanger back-driving type online flushing device

Technical Field

The utility model relates to a cleaning device, in particular to a back-drive type online flushing device for a tubular heat exchanger.

Background

The tubular heat exchanger is a heat exchanger commonly used in the industrial field at present, and sludge and scale can be accumulated in a heat exchange tube or a heat exchange plate due to heat exchange and concentration of cooling water in the operation process, so that the heat exchange tube or the heat exchange plate needs to be cleaned. The conventional cleaning mode of the original heat exchanger mainly adopts manual mechanical cleaning or chemical cleaning, the heat exchanger needs to be shut down and disassembled during cleaning, cleaning personnel enter a water chamber of the heat exchanger through a manhole and clean and inspect the heat exchange pipe, and therefore the conventional cleaning mode not only takes labor cost materials, but also is poor in labor environment and influences normal operation of a unit.

For the tube type heat exchanger generating the hard scale, the chemical cleaning is carried out only after the shutdown, the hard scale cannot be removed in time, and a large amount of energy consumption is generated in the operation; when the tube type heat exchanger is seriously scaled, corrosion leakage or tube explosion accidents can be generated, so that the water quality of the tube shell side is polluted, the water quality of a heat supply system is further deteriorated, and the problems of unsafety and uneconomic production are brought.

In order to solve the problem, the utility model provides a line belt cleaning device to shell and tube heat exchanger, this belt cleaning device gets into from the lateral wall of heat exchanger head, carry the washing liquid to a style of calligraphy through steering mechanism on spraying female pipe, a style of calligraphy sprays female pipe and just sets up the heat exchange tube mouth of pipe, sprays female pipe's rotation through a style of calligraphy during the washing, can wash each heat exchange tube, when not wasing, also do not influence the normal use of heat exchanger, reach the purpose of washing on line.

Because the temperature difference between the fluid in the heat exchanger and the cleaning fluid in the cleaning device is large, the cleaning fluid conveying pipeline needs to turn and simultaneously takes into account the transmission of the rotary power, and the sealing performance and the transmission stability have certain difficulty. For example, the applicant provides a "hydraulic steering device" in the patent with the application number of 201420601506.3, and provides a "rotary online flushing device and a process system" in the patent with the application number of 202011242100.7, both of which are connected with a rotary water inlet pipe and a rotary water outlet pipe through two ends of a fixed right-angle pipeline, so as to realize the hydraulic steering function, the right-angle pipeline needs to be in sealing butt joint with the water inlet pipe and the water outlet pipe on one hand, so as to ensure that cleaning liquid does not leak, on the other hand, a steering transmission mechanism needs to be arranged outside the water inlet pipe and the water outlet pipe, the right-angle pipeline needs to be kept fixed, and the overall structure is relatively complex; because tubular heat exchanger's cleaning fluid temperature and pressure are all higher, right angle pipeline, water inlet, delivery port department lead to the transmission shaft to take place to deflect because of expend with heat and contract with cold easily, can increase the wearing and tearing of junction like this, shorten equipment life, including the complexity of its structure itself, this kind of hydraulic steering mechanism's fault rate is higher.

In order to solve the above problems, people are always seeking an ideal technical solution.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides the tubular heat exchanger back-drive type online flushing device which is scientific in design, simple in structure, low in failure rate and long in service life.

In order to achieve the purpose, the utility model adopts the technical scheme that: a back-drive online flushing device of a tubular heat exchanger comprises a liquid inlet pipe, a hydraulic steering mechanism, a liquid outlet pipe, a heat exchange pipe flushing nozzle connected to the liquid outlet pipe and a power source, wherein the hydraulic steering mechanism comprises a transfer chamber, a liquid storage cavity arranged in the transfer chamber, a transmission cavity arranged in the transfer chamber and a transmission mechanism arranged in the transmission cavity, the transfer chamber is provided with a liquid inlet, a power inlet and two installation holes positioned at two sides of the liquid storage cavity, the liquid inlet and the two installation holes are vertically arranged, the liquid storage cavity is communicated with the liquid inlet pipe through the liquid inlet, the liquid outlet pipe is rotatably arranged in the two installation holes, the liquid outlet of the liquid outlet pipe extends out of the transfer chamber, the liquid outlet pipe is communicated with the liquid storage cavity through a side wall opening, and the transmission cavity is positioned outside the tail end of the liquid storage cavity, the power input port is communicated with the transmission cavity, the transmission mechanism comprises a worm wheel and a worm which are meshed together, the worm wheel is installed at the tail end of the liquid outlet pipe, and the power source inputs power from the power input port and drives the worm to rotate.

Based on the above, the power supply includes driving motor and pivot, pivot one end with driving motor's drive shaft connection, the other end of pivot passes behind the power input port with the worm is connected, the pivot is rotationally installed in the power input port.

Based on the above, the drain pipe passes through the bearing to be installed two in the installation hole, the worm both ends are passed through the bearing and are installed in the transmission intracavity, the drain pipe and two be provided with the sealing washer between the installation hole respectively.

Based on the above, the adapter chamber further comprises a rear cover capable of completely opening the transmission cavity, and the rear cover is detachably mounted through bolts.

Based on the above, every the installation hole outside all is provided with the bearing gland, every the bearing gland all installs through bolt detachably on the adapter.

Based on the above, it still includes the connection dead lever on the adapter chamber, the dead lever with the feed liquor pipe is the in-line and arranges, the pivot with dead lever parallel arrangement.

Based on the above, be provided with the telescopic joint on the feed liquor pipe.

Based on the above, the heat exchange tube washing nozzle is a straight-line nozzle, two rows of nozzles are arranged on the straight-line nozzle, two rows of nozzles are reserved between the adjacent heat exchange tubes, and the two rows of nozzles are arranged in a tooth-shaped crossed manner.

Compared with the prior art, the liquid storage cavity has substantive characteristics and progress, and particularly, the cleaning liquid can be cached by the aid of the liquid storage cavity, the liquid outlet pipe is communicated with the liquid storage cavity through the side wall opening, so that the cleaning liquid can be turned after being cached, the liquid inlet pipe can be fixedly arranged in such a way, the liquid outlet pipe can be rotated only by the aid of the worm and gear meshed together to form a transmission mechanism, and the liquid outlet pipe is directly driven to rotate from the tail end.

Furthermore, the power source adopts the driving motor and the rotating shaft, so that the control and the use are convenient and fast; a set of bearing and a set of seal are respectively installed in the two installation holes, and compared with a traditional structure that two sets of relative rotation need to be arranged at a steering position, the structure at the rotating position is greatly simplified, so that the transmission is more stable, and the failure rate is lower.

Furthermore, the rear cover and each bearing gland are detachably mounted by bolts, so that the replacement and maintenance of internal transmission parts are facilitated; the fixed rods and the liquid inlet pipe are arranged in a straight line shape, and two ends of the fixed rods are fixedly arranged on the end cover of the tubular heat exchanger, so that the transfer chamber can be stably fixed, and the amplitude of the transfer chamber in the use process is reduced; the arrangement of the expansion joint can digest the deformation of the liquid inlet pipe caused by expansion with heat and contraction with cold of the high-temperature cleaning liquid; two the nozzle is the profile of tooth and alternately arranges, can align with two heat exchange tubes, once only washs two heat exchange tubes to improve the cleaning efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a back-drive type online flushing device of a tubular heat exchanger in the utility model.

Fig. 2 is a front structural view of a washing nozzle of the heat exchange tube of the present invention.

Fig. 3 is a schematic structural view of the hydraulic power steering mechanism of the present invention.

In the figure: 1. a liquid inlet pipe; 2. a liquid outlet pipe; 3. a washing nozzle of the heat exchange tube; 4. a transfer chamber; 5. a liquid storage cavity; 6. a drive motor; 7. a rotating shaft; 8. a turbine; 9. a worm; 10. a bearing; 11. a seal ring; 12. a rear cover; 13. a bearing gland; 14. fixing the rod; 15. a transmission cavity; 16. an expansion joint; 17. a nozzle; 18. an end cover of the tubular heat exchanger; 21. a sidewall opening; 41. a liquid inlet; 42. a power input port; 43. and (6) installing holes.

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments.

As shown in fig. 1-3, a back-drive type online flushing device for a tubular heat exchanger comprises a liquid inlet pipe 1, a hydraulic steering mechanism, a liquid outlet pipe 2, a flushing nozzle 3 for a heat exchange pipe connected to the liquid outlet of the liquid outlet pipe 2, and a power source, wherein the hydraulic steering mechanism specifically comprises a transfer chamber 4, a liquid storage cavity 5 arranged in the transfer chamber 4, a transmission cavity 15 arranged in the transfer chamber 4, and a transmission mechanism arranged in the transmission cavity 15, the transfer chamber 4 is provided with a liquid inlet 41, a power input port 42, and two mounting holes 43 located at two sides of the liquid storage cavity 5, the liquid inlet 41 is perpendicular to the two mounting holes 43, the liquid storage cavity 5 is communicated with the liquid inlet pipe 1 through the liquid inlet 41, the liquid outlet pipe 2 is mounted in the two mounting holes 43 through a bearing 10, and the liquid outlet of the liquid outlet pipe 2 extends out of the transfer chamber 4, the liquid outlet pipe 2 is communicated with the liquid storage cavity 5 through a side wall opening 21, so that the buffer storage and the steering of the cleaning liquid are realized.

Drive chamber 15 is located deposit the tail end outside of liquid chamber 5, power input port 42 with drive chamber 15 intercommunication, drive mechanism is including meshing worm 8 and worm 9 together, turbine 8 is installed 2 tail ends of drain pipe, the power supply specifically includes driving motor 6 and pivot 7, pivot 7 one end with driving motor 6's drive shaft connection, the other end of pivot 7 passes behind the power input port 42 with worm 8 is connected, and install through bearing 10 respectively at the both ends of worm 9 in the drive chamber 15, power input port 42 setting is rotationally passed to pivot 7.

In order to ensure the sealing performance of the rotating part, sealing rings 11 are respectively arranged between the liquid outlet pipe 2 and the two mounting holes 43.

For convenience of maintenance, the adapter 4 further includes a rear cover 12 capable of completely opening the transmission cavity 15, the rear cover 12 is detachably mounted by bolts, a bearing cover 13 is disposed outside each mounting hole 43, and each bearing cover 13 is detachably mounted on the adapter 4 by bolts.

In order to facilitate fixation, the transfer chamber 4 is further connected with fixing rods 14, the fixing rods 14 and the liquid inlet pipe 1 are arranged in a straight line, and the rotating shaft 7 is parallel to the fixing rods 14.

In order to reduce the influence of expansion with heat and contraction with cold on the service life of the equipment, the liquid inlet pipe 1 is provided with an expansion joint 16; when in use, the expansion joint 16 can digest the deformation of the liquid inlet pipe 1 caused by expansion with heat and contraction with cold.

In order to improve the cleaning efficiency, the heat exchange tube flushing sprayer 3 is a straight-line-shaped sprayer, two rows of nozzles 17 are distributed on the straight-line-shaped sprayer, the distance between the adjacent heat exchange tubes is reserved between the two rows of nozzles 17, and the two rows of nozzles 17 are distributed in a tooth-shaped crossed manner; when cleaning, the two rows of nozzles 17 can be aligned with the two rows of heat exchange tubes at a time, thereby doubling the cleaning efficiency.

The working principle is as follows:

the two ends of a liquid inlet pipe 1 and a fixed rod 14 are fixed on a pipe type heat exchanger end cover 18, the liquid inlet pipe 1 is externally connected with cleaning liquid, the cleaning liquid firstly enters a liquid storage cavity 5 for caching, then enters a liquid outlet pipe 2 from a side wall opening 21, a driving motor 6 is started, the liquid outlet pipe 2 is driven to rotate through a rotating shaft 7, a worm 9 and a turbine 8, two rows of nozzles 17 on a heat exchange pipe flushing sprayer 3 can be sequentially aligned with each row of heat exchange pipes along with the rotation of the liquid outlet pipe 2, after the alignment, the driving motor 6 is closed, after the cleaning liquid is cleaned, the cleaning liquid is switched to the next station, and the heat exchange pipes are completely cleaned.

Compared with the traditional hydraulic steering mechanism, the cleaning liquid can be cached by utilizing the arrangement of the liquid storage cavity 5, the liquid inlet pipe 1 can be fixedly arranged in the mode and only the liquid outlet pipe 2 needs to rotate, and compared with the original structure, the design does not need to arrange a complex rotating and sealing structure at the position of the liquid inlet pipe 1, the steering of the cleaning liquid and power is realized, the whole structure is simpler, the coaxiality requirement in the transmission process is reduced compared with the traditional structure, and therefore the fault rate can be greatly reduced, and the service life is prolonged.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the utility model or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the utility model as defined by the appended claims.

Claims

1. The utility model provides an online washing unit of tubular heat exchanger back-drive formula, includes feed liquor pipe, hydraulic steering mechanism, drain pipe, connects heat exchange tube washing terminals and power supply on the drain pipe liquid outlet, its characterized in that: the hydraulic steering mechanism comprises a switching chamber, a liquid storage cavity arranged in the switching chamber, a transmission cavity arranged in the switching chamber and a transmission mechanism arranged in the transmission cavity, wherein the switching chamber is provided with a liquid inlet, a power input port and two installation holes positioned at two sides of the liquid storage cavity, the liquid inlet is vertically arranged with the two installation holes, the liquid storage cavity is communicated with the liquid inlet pipe through the liquid inlet, the liquid outlet pipe is rotatably arranged in the two installation holes, the liquid outlet of the liquid outlet pipe extends out of the switching chamber, the liquid outlet pipe is communicated with the liquid storage cavity through a side wall opening, the transmission cavity is positioned at the outer side of the tail end of the liquid storage cavity, the power input port is communicated with the transmission cavity, the transmission mechanism comprises a turbine and a worm which are meshed together, and the turbine is arranged at the tail end of the liquid outlet pipe, the power source inputs power from the power input port and drives the worm to rotate.

2. The tubular heat exchanger back-drive online flushing device according to claim 1, characterized in that: the power supply comprises a driving motor and a rotating shaft, one end of the rotating shaft is connected with a driving shaft of the driving motor, the other end of the rotating shaft penetrates through the power input port and then is connected with the worm, and the rotating shaft is rotatably installed in the power input port.

3. The tubular heat exchanger back-drive online flushing device according to claim 2, characterized in that: the drain pipe passes through the bearing and installs two in the installation hole, the worm both ends pass through the bearing and install in the transmission intracavity, the drain pipe and two be provided with the sealing washer between the installation hole respectively.

4. The tubular heat exchanger back-drive online flushing device according to claim 3, characterized in that: the adapter chamber further comprises a rear cover capable of completely opening the transmission cavity, and the rear cover is detachably mounted through bolts.

5. The tubular heat exchanger back-drive online flushing device according to claim 4, characterized in that: every the installation hole outside all is provided with bearing cover, every bearing cover all installs through bolt detachably on the adapter.

6. A tube heat exchanger back-drive online flushing device according to any one of claims 2-5, characterized in that: the liquid inlet pipe is arranged in a straight line with the liquid inlet pipe, and the rotating shaft is arranged in parallel with the fixed rod.

7. A tube heat exchanger back-drive online flushing device according to any one of claims 1-5, characterized in that: and the liquid inlet pipe is provided with an expansion joint.

8. The tubular heat exchanger back-drive online flushing device according to claim 7, characterized in that: the heat exchange tube flushing sprayer is a straight-line-shaped sprayer, two rows of nozzles are distributed on the straight-line-shaped sprayer, two rows of adjacent heat exchange tube intervals are reserved between the nozzles, and the two rows of nozzles are arranged in a tooth-shaped crossed manner.