Balanced pipeline on-line unblocking device

Abstract

The utility model relates to a balance pipeline on-line unblocking device which comprises a balance pipe, the two ends of the balance pipe are communicated with a high-temperature condensate tank and a final cooler respectively, a water outlet of the high-temperature condensate tank is connected with a water conveying pipe, the other end of the water conveying pipe is provided with a three-way valve, and one connector of the three-way valve is connected with a delivery pipe. The other connector of the three-way valve is communicated with the balance pipe through a backflow pipe. A water pump is further arranged on the water conveying pipe. The balance pipe is further movably sleeved with an unblocking assembly. According to the application, saturated steam is firstly utilized to heat the blocked part of the balance pipe, so that the blocked part is separated from the pipe wall of the balance pipe, then condensate in the high-temperature condensate tank is utilized to quickly wash the interior of the pipeline, ammonium salt and the condensate are recovered into the high-temperature condensate tank together, the whole process can be carried out under the condition of no shutdown, and the production efficiency is improved. And saturated steam cannot be directly input into the balance pipe, so that zero discharge of waste water and waste gas is realized, and the purpose of quickly solving pipeline blockage can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of balance pipe blockage clearing, in particular to an on-line blockage clearing device for a balance pipeline. Background Art

[0002] The conversion and heat recovery high-temperature condensate tank is mainly used to recover the condensate from the conversion gas. Since the ammonia content in the condensate is relatively high, ammonium salts formed by ammonia and carbon dioxide will be present in the gas phase after the condensate enters the high-temperature condensate tank. The ammonium salts will enter the balance pipe at the top of the high-temperature condensate tank. Due to the long length and small diameter of this balance pipeline, ammonium salt crystallization is extremely likely to occur, resulting in pipeline blockage. Eventually, the pressure inside the high-temperature condensate tank increases as the liquid level rises, and the condensate can no longer be discharged into the high-temperature condensate tank, posing a great potential safety hazard to the long-term stable operation of the conversion device.

[0003] The conventional cleaning method generally involves shutting down the equipment, removing the blocked part of the pipeline, injecting chemical agents into the interior for cleaning, and then reassembling after cleaning. This not only affects the production efficiency of the equipment, but also easily generates waste water and waste gas when using chemical agents for cleaning, increasing the maintenance cost of the equipment. Summary of the Utility Model

[0004] Based on the above description, the utility model provides an on-line blockage clearing device for a balance pipeline to solve the disadvantages that the existing balance pipe blockage clearing method requires shutdown for operation, has cumbersome steps, affects production efficiency, and is prone to generating waste water and waste gas after cleaning, resulting in increased maintenance costs.

[0005] The utility model is realized through the following technical solutions:

[0006] An on-line blockage clearing device for a balance pipeline includes a balance pipe. The two ends of the balance pipe are respectively communicated with a high-temperature condensate tank and a final cooler, and first and second water stop valves are also equipped at both ends of the balance pipe. The drain port of the high-temperature condensate tank is connected with a water delivery pipe, and the other end of the water delivery pipe is provided with a three-way valve. One interface of the three-way valve is connected with an external delivery pipe, and the other interface of the three-way valve is communicated with the balance pipe through a return pipe. A water pump is also arranged on the water delivery pipe; a blockage clearing assembly is movably sleeved outside the balance pipe and is arranged close to the side of the high-temperature condensate tank.

[0007] Further, the blockage clearing assembly includes a protective housing. There is a gap between the inner wall of the protective housing and the outer wall of the balance pipe. Adjusting rings are rotatably installed at both ends of the protective housing respectively. The inner side of the adjusting ring is provided with a spiral groove. An installation ring is also provided between the protective housing and the adjusting ring. The outer wall of the installation ring is fixedly connected to the inner wall of the protective housing. Multiple chutes are arranged in a circumferential manner on the outer side of the installation ring. A fixing block is arranged inside each chute. The top parts of several fixing blocks protrude and are slidably inserted into the groove.

[0008] Further, the side of the fixing block facing the center is arc-shaped. When several fixing blocks gather towards the center until their side walls are in contact, the centers of several fixing blocks exactly form a circle with the same diameter as the outer diameter of the balance pipe. Rubber pads are provided on the arc-shaped surface and both end faces of the fixing block.

[0009] Further, an elastic pad is also provided on the outer side wall of the adjusting ring. Anti-slip patterns are provided on the elastic pad.

[0010] Further, an injection port and a discharge port are also provided on the outer side wall of the protective housing. The injection port is remotely connected to a steam generator through a gas pipe. An air pump is also arranged at the connection between the steam generator and the gas pipe.

[0011] Further, a temperature sensor is arranged at the center of the top surface of the protective housing. The detection end of the temperature sensor extends into the interior of the protective housing and has a spacing from the outer wall of the balance pipe. A display screen is provided on the outer side wall of the temperature sensor body for real-time display of the measured temperature.

[0012] Further, a heat insulation layer is also provided on the outer side wall of the protective housing.

[0013] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0014] 1. Based on the existing blockage clearing method, the present application improves it and adopts a combination of external heating and internal flushing for blockage clearing. That is, first use saturated steam to heat the blocked part of the balance pipe. After the ammonium salt crystals inside come into contact with high temperature, they will decompose by themselves, so that they are separated from the pipe wall of the balance pipe. Then use the condensate inside the high-temperature condensate tank to quickly flush the inside of the pipeline, and recover the ammonium salt and the condensate into the high-temperature condensate tank together. The whole process can be carried out without shutting down the machine, and only need to open and close multiple valves respectively. At the same time, in the above method, the saturated steam is not directly input into the balance pipe. Therefore, after heating, the steam can be directly discharged to the outside, so as to achieve zero discharge of waste water and waste gas, and can quickly solve the problem of pipeline blockage, effectively ensuring the long-term stable operation of the conversion and heat recovery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the connection structure of the balance pipe, blockage removal assembly, high-temperature condensate tank and final cooler in this embodiment;

[0016] Figure 2 Schematic diagram of the disassembled structure of the protective shell and the adjusting ring in this embodiment;

[0017] Figure 3 Schematic diagram of the structure of the adjusting ring in this embodiment;

[0018] Wherein: 1. Balance pipe; 11. First water stop valve; 12. Second water stop valve; 13. Three-way valve; 14. Water delivery pipe; 15. External delivery pipe; 16. Return pipe; 2. High-temperature condensate tank; 3. Final cooler; 4. Water pump; 5. Blockage removal assembly; 51. Protective shell; 52. Adjusting ring; 53. Installation ring; 54. Chute; 55. Fixed block; 56. Injection port; 57. Discharge port; 6. Steam generator; 61. Air pump; 7. Temperature sensor. Detailed implementation manners

[0019] For the convenience of understanding the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] Combined with Figures 1-3 As shown, an on-line blockage removal device for a balance pipeline includes:

[0022] A balance pipe 1, the two ends of which are respectively communicated with a high-temperature condensate tank 2 and a final cooler 3, and a first water stop valve 11 and a second water stop valve 12 are respectively provided at the connection points. The balance pipe 1 is connected to a three-way valve 13 through a return pipe 16. The three-way valve 13 is communicated with the drainage port of the high-temperature condensate tank 2 through a water delivery pipe 14, and the other end of the three-way valve 13 is communicated with an external delivery pipe 15;

[0023] A blockage removal assembly 5, which is movably sleeved on the balance pipe 1 and performs blockage removal work on the balance pipe 1 by external heating.

[0024] Specifically; in this embodiment, a water pump 4 is further provided on the water delivery pipe 14. Therefore, by controlling the delivery direction of the three-way valve 13, the condensate inside the high-temperature condensate tank 2 can be transported to the balance pipe 1 by using the water pump 4 to complete the flushing work.

[0025] Since the ammonium salt is a crystal and adheres to the pipe wall, only using condensate for cleaning has a general effect. Although the ammonium salt crystals will dissolve into the condensate, the efficiency is low. Therefore, in order to make the ammonium salt fall off quickly, the blockage clearing assembly 5 needs to be used in cooperation outside the pipe wall.

[0026] The blockage clearing assembly 5 includes a protective housing 51. The protective housing 51 has a cylindrical structure and there is a gap between its inner wall and the outer wall of the balance pipe 1. At the same time, adjusting rings 52 are provided at both ends of the protective housing 51. The adjusting rings 52 are movably assembled with the inner wall of the protective housing 51 by using ball bearings, and sealing gaskets should be added at both ends of the ball bearings. An installation ring 53 is also provided between the protective housing 51 and the adjusting ring 52. The outer wall of the installation ring 53 is fixedly connected to the inner wall of the protective housing 51.

[0027] The inner side of the adjusting ring 52 is provided with a spiral groove. Multiple rectangular sliding grooves 54 are arranged in a circular pattern on the outer side of the installation ring 53. A fixing block 55 is movably installed in each sliding groove 54, and the top part of each fixing block 55 protrudes and is slidably inserted into the groove. Therefore, when the protective housing 51 is fixed and the adjusting ring 52 at the end is twisted, all the fixing blocks 55 will gather towards the center or expand outwards, thereby achieving the effect of clamping or loosening.

[0028] In addition, the side of each fixing block 55 facing the center should be set as an arc surface. For example Figure 2 as described in, when the 4 fixing blocks 55 gather towards the center until their side walls are mutually attached, the through hole formed by the central gathering is exactly the same as the outer diameter of the balance pipe 1, so that a sealed space is formed between the protective housing 51 and the outer wall of the balance pipe 1.

[0029] In the above structure, relying only on the mutual cooperation of the fixing blocks 55, the sealing effect is poor. Therefore, rubber gaskets can also be provided on their arc surfaces and both side walls. When driving them to gather later, the sealing performance can be further improved by squeezing the rubber gaskets.

[0030] For the above snap-together sealing structure, it can also be filled and sealed with an external elastic material, as long as it can block both ends of the protective housing 51 for use.

[0031] On the outer wall of the protective housing 51, there are also a filling port 56 and a discharge port 57. The filling port 56 is remotely connected to a steam generator 6 through a gas pipe, and a gas pump 61 is also provided at the connection between the gas pipe and the steam generator 6. An electronic valve can also be added to the discharge port 57 to discharge steam regularly.

[0032] Based on the above structure, the high-temperature steam can be quickly input between the protective housing 51 and the balance pipe 1 through the gas pump 61. Then, by utilizing the property that ammonium salts decompose when heated and adopting an external heating method, the inner wall of the balance pipe 1 can be separated from the ammonium salts. Finally, the purpose of unclogging can be achieved by flushing with the water pump 4.

[0033] The operation method is as follows:

[0034] ① First, close the second water stop valve 12 and open the first water stop valve 11; and simultaneously switch the three-way valve 13 to connect the water delivery pipe 14 with the balance pipe 1.

[0035] ② Move the unclogging assembly 5 to the designated position and twist the adjusting rings 52 at both ends to fix it to the balance pipe 1.

[0036] ③ Start the steam generator 6 and simultaneously start the gas pump 61 to input the high-temperature steam between the protective housing 51 and the balance pipe 1 to quickly heat the outer wall of the balance pipe 1.

[0037] ④ After heating the balance pipe 1 for a period of time, start the water pump 4 and discharge the condensate in the high-temperature condensate tank 2 into the balance pipe 1, so that the ammonium salts are washed back into the high-temperature condensate tank 2 along the balance pipe 1 to complete the unclogging work.

[0038] In the above work, not only can the ammonium salts be recovered, but also the steam will never come into contact with the inside of the balance pipe 1. Therefore, it can be directly discharged outward, achieving zero discharge of waste water and waste gas, quickly solving the problem of pipeline blockage, effectively ensuring the long-term stable operation of the conversion and heat recovery device, and greatly reducing the maintenance cost.

[0039] In addition, a temperature sensor 7 should be added outside the protective housing. A display screen is provided on the main body of the temperature sensor 7, and its detection end extends into the protective housing and leaves a distance from the outer wall of the balance pipe 1. Its main purpose is to detect the temperature of the injected air and display it in real time through the display screen so as to adjust it to the optimal temperature to improve the unclogging efficiency.

[0040] At the same time, in order to prevent the temperature of the steam input between the protective housing and the balance pipe 1 from decreasing too quickly, a heat insulation layer can also be added outside the protective housing. The heat insulation layer can be made of materials such as heat insulation cotton, and it can also prevent workers from being scalded.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. And these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present invention.

Claims

1. An on-line blockage clearing device for a balance pipeline, characterized in that, It includes a balance pipe (1), both ends of the balance pipe (1) are respectively communicated with a high-temperature condensate tank (2) and a final cooler (3), and a first water stop valve (11) and a second water stop valve (12) are also equipped at both ends of the balance pipe (1). The drain outlet of the high-temperature condensate tank (2) is connected with a water delivery pipe, the other end of the water delivery pipe (14) is provided with a three-way valve (13), one interface of the three-way valve (13) is connected with an external delivery pipe (15), the other interface of the three-way valve (13) is communicated with the balance pipe (1) through a return pipe (16), and a water pump (4) is also provided on the water delivery pipe (14); An anti-blocking assembly (5) is also movably sleeved outside the balance pipe (1) and is arranged close to the side of the high-temperature condensate tank (2).

2. The on-line blockage clearing device for a balance pipeline according to claim 1, characterized in that, The anti-blocking assembly (5) includes a protective shell (51), a gap is left between the inner wall of the protective shell (51) and the outer wall of the balance pipe (1), and adjusting rings (52) are respectively rotatably installed at both ends of the protective shell (51). The inner side of the adjusting ring (52) is provided with a spiral groove, and an installation ring (53) is also provided between the protective shell (51) and the adjusting ring (52). The outer wall of the installation ring (53) is fixedly connected with the inner wall of the protective shell (51), and a plurality of sliding grooves (54) are arranged around the outer side of the installation ring (53). Each of the sliding grooves (54) is internally provided with a fixing block (55), and the top parts of several fixing blocks (55) protrude and are slidably inserted into the groove.

3. The on-line blockage clearing device for a balance pipeline according to claim 2, characterized in that, The side of the fixing block (55) facing the center is arc-shaped. When several fixing blocks (55) gather towards the center until their side walls are in contact, the centers of several fixing blocks (55) exactly form a circle with the same outer diameter as the balance pipe (1), and rubber pads are provided on the arc-shaped surface and both side end faces of the fixing block (55).

4. The on-line blockage clearing device for a balance pipeline according to claim 3, characterized in that, An elastic pad is also provided on the outer side wall of the adjusting ring (52), and anti-slip patterns are provided on the elastic pad.

5. The on-line blockage clearing device for a balance pipeline according to claim 4, characterized in that, A filling port (56) and a discharge port (57) are also provided on the outer side wall of the protective shell (51). The filling port (56) is remotely connected with a steam generator (6) through an air pipe, and an air pump (61) is also arranged at the connection of the steam generator (6) and the air pipe.

6. The on-line blockage clearing device for a balance pipeline according to claim 5, characterized in that A temperature sensor (7) is arranged at the center of the top surface of the protective shell (51), and the detection end of the temperature sensor (7) extends into the protective shell and has a distance from the outer wall of the balance pipe (1). A display screen is provided on the outer side wall of the temperature sensor (7) body for real-time displaying the measured temperature.

7. The on-line blockage clearing device for a balance pipeline according to claim 6, characterized in that, A heat preservation layer is also provided on the outer side wall of the protective shell (51).

Images