Online treatment system for drainage inner leakage in unit operation

Abstract

The utility model provides an on-line treatment system for drainage inner leakage in unit operation, which comprises a steam pipeline, a drainage pipeline and a drainage collecting pipe, the steam pipeline is communicated with the drainage pipeline, the other end of the drainage pipeline is communicated with the drainage collecting pipe, and the drainage pipeline is communicated with the drainage collecting pipe through a quick release mechanism. An online detection system is arranged in the quick release mechanism, the quick release mechanism comprises a water guide pipe, flange plates are arranged at the two ends of the water guide pipe, first embedding grooves and first clamping strips are formed in the flange plates, second clamping strips and second embedding grooves are formed in connecting plates of the drainage pipeline and the drainage collecting pipe correspondingly, the first clamping strips are matched with the second embedding grooves, and the second clamping strips are matched with the second embedding grooves. According to the quick-dismounting water guide pipe, the quick dismounting and mounting of the water guide pipe for leakage detection can be realized through the quick dismounting mechanism, the maintenance and replacement time is greatly shortened, the unnecessary economic loss is reduced, the maintenance efficiency is improved, and the operation is quicker, more convenient, safer and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of drain and water discharge systems in power plants, in particular to an online drainage internal leakage treatment system during the operation of a unit. Background Art

[0002] Energy conservation and consumption reduction is a very important task for power plants now and in the future. In the field of steam pipeline draining (regular draining rather than startup draining), when the generator set is operating under load, the normal state of the drain system valve is closed, and the hot standby system drain valve is in a slightly open state to ensure that steam is always flowing; however, as long as the valve is not fully open, the valve core will be flushed. When the hot standby drain valve is fully closed again, the valve will leak internally.

[0003] The conventional layout of the drainage system is as follows: Figure 5 As shown, there is a manual isolation valve and a remote-controlled electric or pneumatic steam trap isolation valve; the normal operation mode is: the manual valve 1 is generally in the fully open state, and the remote control is used for steam trap control. When the remote-controlled steam trap valve 2 is switched on and off after the heating pipe is under pressure, the valve core will be eroded. After the unit is started and stopped several times, the remote-controlled steam trap valve 2 will have internal leakage. When the valve of the conventional steam trap system is replaced, the unit must be shut down for replacement or maintenance, which is troublesome to operate.

[0004] The prior art provides a hydrophobic internal leakage online detection system, the structural schematic diagram of which is shown in FIG. Figure 6 As shown, a steam pipe 3 and a drain pipe 4 connected to the steam pipe 3 are provided on the drain pipe 4 in sequence from close to the steam pipe 3 to far away from the steam pipe 3. A drain header 13 is provided at the end of the third valve 7 far away from the fourth valve 8, and a first thermometer 9 is provided on the drain pipe 4 between the first valve 5 and the steam pipe 3, and a pressure measuring instrument 12 is provided between the first thermometer 9 and the first valve 5; a second thermometer 10 is provided between the first valve 5 and the second valve 6; and a third thermometer 11 is provided between the fourth valve 8 and the third valve 7.

[0005] When in use, the first valve 5, the second valve 6, the fourth valve 8 and the third valve 7 are fully opened to discharge the water in the steam pipeline; and when it is necessary to detect whether the water trap system has internal leakage, it is only necessary to open the first valve 5 and the third valve 7, and then close the fourth valve 8 and then the second valve 6. At this time, when the temperature values ​​measured by the first thermometer 9, the second thermometer 10 and the third thermometer 11 are always the same and higher than the corresponding saturation temperature value at the pressure measuring instrument 12, the water trap system has internal leakage, and the second valve 6 or the fourth valve 8 needs to be replaced. At this time, the first valve 5 and the third valve 7 are closed again. After closing, when the temperature values ​​displayed by the second thermometer 10 and the third thermometer 11 show a continuous downward trend, it can be considered that the first valve 5 and the third valve 7 are completely closed, and the second valve 6 and the fourth valve 8 can be repaired or replaced.

[0006] The traditional method of replacement is to use a cutting machine to cut off the pipe at the leaking part of the weld, replace it and then re-weld it, or remove the leaking pipe between the flange bolts and nuts, replace it as a whole and then tighten it with bolts and nuts. Both of these methods are time-consuming, inefficient and cumbersome to operate. The longer the replacement time is, the greater the economic loss will be, which will cause great trouble to the maintenance work and greatly reduce the maintenance efficiency. Utility Model Content

[0007] In view of this, the utility model provides an online treatment system for hydrophobic internal leakage during unit operation, which can realize fast, safe and efficient replacement of pipes at leaking parts through a quick-disassembly mechanism, solving the problems of the traditional methods of cutting off the welded pipes at leaking parts with the help of a cutting machine or removing the leaking pipes between the flange bolts and nuts for overall replacement and then locking them with bolts and nuts, which are time-consuming, inefficient and cumbersome to operate. It greatly reduces the replacement time, greatly reduces the economic loss, makes maintenance simpler and greatly improves the maintenance efficiency.

[0008] To solve the above technical problems, the utility model provides an online control system for drain internal leakage during unit operation, including a steam pipe, a drain pipe and a drain header, wherein the steam pipe is connected to the drain pipe, the other end of the drain pipe is connected to the drain header, the drain pipe and the drain header are connected through a quick-release mechanism, an online detection system is arranged inside the quick-release mechanism, the quick-release mechanism includes a water pipe, both ends of the water pipe are provided with flanges, a first engaging groove and a first clamping strip are provided on the flange, a second clamping strip and a second engaging groove are respectively provided on the connecting plates of the drain pipe and the drain header, the first clamping strip is matched with the second engaging groove, and the second clamping strip is matched with the first engaging groove. The utility model can realize the rapid disassembly and installation of the water pipe for detecting leakage through the quick-release mechanism, which greatly reduces the time for maintenance and replacement, reduces unnecessary economic losses, improves maintenance efficiency, and makes the operation faster, more convenient, safer and more efficient.

[0009] The first engaging groove is an arc-shaped structure, a mounting hole is provided inside the first engaging groove, a spring is provided inside the mounting hole, a chuck is provided on the upper part of the spring, a limit stop groove is provided on the chuck, the first clamping strip is an arc-shaped structure, a semicircular through groove matched with the chuck is provided at one end of the first clamping strip, and the other end of the first clamping strip extends to the upper part of the first engaging groove. The utility model can realize the rapid installation and disassembly of the water pipe through the cooperation of the first clamping strip on the water pipe and the second clamping slot on the connecting disk of the drainage pipe, and the mutual cooperation of the first engaging groove on the water pipe and the second clamping strip on the connecting disk of the drainage collecting pipe, so that the operation is more convenient and efficient, and the maintenance efficiency is greatly improved.

[0010] The second clamping strip is an arc-shaped structure adapted to the first interlocking groove, and the left and right ends of the second clamping strip are respectively provided with avoidance grooves that are inserted into the lower part of the limit stop groove. The utility model can achieve the fixing operation of the installed drain pipe or drain collecting pipe through the cooperation of the avoidance groove on the second clamping strip and the chuck inside the first interlocking groove, thereby ensuring the tightness of the connection and realizing its rapid disassembly and installation operation.

[0011] Pin holes are respectively provided on the connection plates of the drain pipe and the drain collecting pipe, and positioning pins are inserted into the pin holes. The utility model can press the positioning pin downward to further compress the spring by pressing the chuck downward, so as to enhance the tightness of the connection between the water pipe and the drain pipe, and the water pipe and drain collecting pipe, and the operation is more convenient.

[0012] The pin hole is a semicircular columnar structure matched with the semicircular through groove, and the positioning pin is matched with the pin hole.

[0013] A handle is arranged on the outer side of the water guide pipe. The utility model can realize the rapid installation, docking and disassembly of the water guide pipe with the drainage header or the water guide pipe with the drainage pipe by the operator holding the handle, which is more convenient to operate.

[0014] The water pipe is provided with a first valve, a second valve, a fourth valve and a third valve in sequence from the direction close to the steam pipe to the direction away from the steam pipe, the drain manifold is arranged at the end of the third valve away from the fourth valve, and a first thermometer is arranged on the drain pipe between the first valve and the steam pipe, a pressure measuring instrument is arranged between the first thermometer and the first valve; a second thermometer is arranged between the first valve and the second valve; a third thermometer is arranged between the fourth valve and the third valve, and the utility model can isolate the second valve and the fourth valve by closing the first valve and the third valve, and can also isolate the second valve and the fourth valve by closing the first valve and the third valve, and can also isolate the second valve and the fourth valve by closing the first thermometer, the second thermometer and the third thermometer. The instrument measures whether the first valve and the third valve are completely closed, so as to prevent the staff from being hurt by the high-temperature steam sprayed from the second valve when removing the second valve, thereby protecting the safety of the staff. At the same time, during use, since the first valve and the third valve are always fully open, the first valve and the third valve are difficult to be damaged, and since the second valve closes the fourth valve first when closing, the drain in the second valve can fill the pipeline between the second valve and the fourth valve when the second valve is closed, so that the second valve is flushed by the drain for a short time, the second valve is not easily damaged, the service life of the water pipe is greatly increased, and the operation is more convenient.

[0015] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The utility model can realize the rapid, safe and efficient replacement of the pipe at the leaking part through the quick-disassembly mechanism, which solves the problems of the traditional methods of cutting off the pipe at the leaking part by means of a cutting machine or removing the leaking pipe between the flange bolt and nut connection methods for overall replacement and then locking it with bolts and nuts. These two methods are time-consuming, inefficient and cumbersome to operate, greatly reducing the replacement time, greatly reducing economic losses, making maintenance simpler and greatly improving maintenance efficiency.

[0017] 2. The utility model can realize the rapid installation and disassembly of the water pipe through the cooperation between the first clamping strip on the water pipe and the second clamping groove on the connecting plate of the drain pipe, and the mutual cooperation between the first engaging groove on the water pipe and the second clamping strip on the connecting plate on the drain collecting pipe, which makes the operation more convenient and efficient, and greatly improves the maintenance efficiency.

[0018] 3. The utility model can achieve the fixing operation of the installed drain pipe or drain manifold through the cooperation of the avoidance groove on the second clamping strip and the clamping disc inside the first engaging groove, ensure the tightness of the connection, and realize the rapid disassembly and installation operation.

[0019] 4. The utility model can further compress the spring by pressing the chuck downwards by pressing the positioning pin downwards, thereby enhancing the tightness of the connection between the water pipe and the drain pipe, or the water pipe and the drain header, and making the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the quick-disassembly mechanism in the online drainage internal leakage treatment system during the operation of the unit of the utility model;

[0021] Figure 2 This is an enlarged view of the structure at A of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the drain pipe or drain header in the online drainage internal leakage treatment system during the operation of the unit of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the connection of the drain pipe, quick-release mechanism and drain header in the online drain internal leakage treatment system during the operation of the unit of the utility model;

[0024] Figure 5 A schematic diagram of a conventionally arranged drainage system in the prior art;

[0025] Figure 6 The utility model is a structural schematic diagram of an online detection system for hydrophobic internal leakage.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. manual valve; 2. isolating valve; 3. steam pipe; 4. drain pipe; 5. first valve; 6. second valve; 7. third valve; 8. fourth valve; 9. first thermometer; 10. second thermometer; 11. third thermometer; 12. pressure measuring instrument; 13. drain manifold; 14. quick release mechanism; 140. water guide pipe; 141. flange; 142. first fitting groove; 143. first clamping strip; 144. second clamping strip; 145. second fitting groove; 146. mounting hole; 147. spring; 148. chuck; 149. limit stop groove; 150. avoidance groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-6 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0028] like Figure 1-4As shown: This embodiment provides an online treatment system for drain internal leakage during unit operation, including a steam pipe 3, a drain pipe 4 and a drain header 13, wherein the steam pipe 3 is connected to the drain pipe 4, the other end of the drain pipe 4 is connected to the drain header 13, the drain pipe 4 and the drain header 13 are connected through a quick release mechanism 14, an online detection system is arranged inside the quick release mechanism 14, the quick release mechanism 14 includes a water pipe 140, both ends of the water pipe 140 are provided with flanges 141, the flange 141 is provided with a first fitting groove 142 and a first clamping strip 14 3. The connection plates of the drain pipe 4 and the drain manifold 13 are respectively provided with a second clamping strip 144 and a second fitting groove 145, the first clamping strip 143 is matched with the second fitting groove 145, the second clamping strip 144 is matched with the first fitting groove 142, and sealing gaskets are provided on the first clamping strip 143 and the second clamping strip 144. The utility model can realize the rapid disassembly and installation of the leak detection water pipe 140 through the quick disassembly mechanism 14, which greatly reduces the time for maintenance and replacement, reduces unnecessary economic losses, improves maintenance efficiency, and makes the operation faster, more convenient, safer and more efficient.

[0029] According to one embodiment of the utility model, Figure 1 , Figure 2 and Figure 4 As shown, the first engaging groove 142 is an arc-shaped structure, a mounting hole 146 is provided inside the first engaging groove 142, a spring 147 is provided inside the mounting hole 146, a chuck 148 is provided on the upper part of the spring 147, a limit stop groove 149 is provided on the chuck 148, and the first clamping strip 143 is an arc-shaped structure, one end of the first clamping strip 143 is provided with a semicircular through groove matched with the chuck 148, and the other end of the first clamping strip 143 extends to the upper part of the first engaging groove 142. The utility model can realize the rapid installation and disassembly of the water pipe 140 through the cooperation of the first clamping strip 143 on the water pipe 140 and the second clamping groove on the connecting disk of the drainage pipe 4, and the mutual cooperation of the first engaging groove 142 on the water pipe 140 and the second clamping strip 144 on the connecting disk of the drainage collection pipe 13, the operation is more convenient and efficient, and the maintenance efficiency is greatly improved.

[0030] According to one embodiment of the utility model, Figure 1 and Figure 3 As shown, the second clamping strip 144 is an arc-shaped structure adapted to the first interlocking groove 142, and the left and right ends of the second clamping strip 144 are respectively provided with avoidance grooves 150 that are inserted into the lower part of the limit stop groove 149. The utility model can achieve the fixing operation of the installed drain pipe 4 or drain collection pipe 13 through the cooperation of the avoidance groove 150 on the second clamping strip 144 and the chuck 148 inside the first interlocking groove 142, thereby ensuring the tightness of the connection and realizing its rapid disassembly and installation operation.

[0031] According to one embodiment of the utility model, Figure 1 , Figure 2 and Figure 3 As shown, pin holes are respectively provided on the connection plates of the drain pipe 4 and the drain collection pipe 13, and positioning pins are inserted into the pin holes. The utility model can press the positioning pin downward to press the chuck 148 downward to further compress the spring 147, so as to enhance the tightness of the connection between the water pipe 140 and the drain pipe 4, and the water pipe 140 and the drain collection pipe 13, and the operation is more convenient.

[0032] The pin hole is a semicircular columnar structure matched with the semicircular through groove, and the positioning pin is matched with the pin hole.

[0033] A handle is provided on the outside of the water pipe 140. The utility model allows the operator to quickly install, connect and disassemble the water pipe 140 with the drainage header 13 or the water pipe 140 with the drainage pipe 4 by holding the handle, which makes the operation more convenient.

[0034] According to one embodiment of the utility model, Figure 4 , Figure 5 and Figure 6 As shown, the water conduit 140 is provided with a first valve 5, a second valve 6, a fourth valve 8 and a third valve 7 in sequence from the direction close to the steam pipe 3 to the direction away from the steam pipe 3, the drain header 13 is arranged at the end of the third valve 7 away from the fourth valve 8, and a first thermometer 9 is provided on the drain pipe 4 between the first valve 5 and the steam pipe 3, and a pressure measuring instrument 12 is provided between the first thermometer 9 and the first valve 5; a second thermometer 10 is provided between the first valve 5 and the second valve 6; a third thermometer 11 is provided between the fourth valve 8 and the third valve 7. The utility model can isolate the second valve 6 and the fourth valve 8 by closing the first valve 5 and the third valve 7, and the pressure measuring instrument 12 is provided between the first thermometer 9 and the first valve 5. The thermometer 10 and the third thermometer 11 measure whether the first valve 5 and the third valve 7 are completely closed, so as to avoid the staff from being hurt by the high-temperature steam sprayed from the second valve 6 when removing the second valve 6, thereby protecting the safety of the staff. At the same time, during use, since the first valve 5 and the third valve 7 are always fully open, the first valve 5 and the third valve 7 are difficult to be damaged, and the second valve 6 closes the fourth valve 8 first when closing, so that when the second valve 6 is closed, the drain in the second valve 6 can fill the pipeline between the second valve 6 and the fourth valve 8, so that the second valve 6 is flushed by the drain for a short time, and the second valve 6 is not easy to be damaged, which greatly increases the service life of the water pipe 140 and makes the operation more convenient.

[0035] The use of the utility model:

[0036] First of all, it should be made clear that the online treatment system involved in the utility model is mainly used for the operation of non-stop treatment of the internal leakage of the drain in the operation of the unit. The utility model takes the monitoring of the online monitoring system of the thermal pipeline in the power plant unit during operation and the operation process of non-stop treatment as an example to explain its use method in detail.

[0037] When the heating of the thermal pipeline is normal, the first valve 5, the second valve 6, the fourth valve 8 and the third valve 7 are fully opened to discharge the water in the steam pipeline; at this time, if the temperature values ​​measured by the first thermometer 9, the second thermometer 10 and the third thermometer 11 slowly decrease to the saturation temperature value corresponding to the pressure measuring instrument 12, it means that the heating of the thermal pipeline is normal and there is no leakage;

[0038] When it is necessary to detect whether the drain system has internal leakage, it is only necessary to open the first valve 5 and the third valve 7, and then close the fourth valve 8 and then the second valve 6. At this time, when the temperature values ​​measured by the first thermometer 9, the second thermometer 10, and the third thermometer 11 are always the same and higher than the saturation temperature value corresponding to the pressure measuring instrument 12, the drain system has internal leakage, and the second valve 6 or the fourth valve 8 needs to be replaced. At this time, the first valve 5 and the third valve 7 are closed again. After closing, when the temperature values ​​displayed by the second thermometer 10 and the third thermometer 11 show a continuous downward trend, it can be considered that the first valve 5 and the third valve 7 are completely closed, and the second valve 6 and the fourth valve 8 can be repaired or replaced. The specific operation is that the operator holds the positioning pin with his hand, pulls it out, and then holds the handle and rotates it at a suitable angle to facilitate the separation of the first clamping strip 143 from the second interlocking groove 145 and the second clamping strip 144 from the first interlocking groove 142 The water pipe 140 is then pulled out, the first clip 143 of the new water pipe 140 is aligned with the second fitting groove 145 of the drain pipe 4, the first clip 143 at the other end of the water pipe 140 is aligned with the second fitting groove 145 of the drain collection pipe 13, and then rotated to a suitable angle. After being installed in place, the positioning pin is pressed into the pin hole again, and the water pipe 140 can be quickly replaced. The utility model can realize the fast, safe and efficient replacement of the pipe at the leaking part through the quick-release mechanism 14, which solves the problems of the traditional methods of cutting off the pipe at the leaking part of the weld with the help of a cutting machine or dismantling the leaking pipe between the flange bolt and nut connection methods for overall replacement and then locking with bolts and nuts. These two methods are time-consuming, inefficient and cumbersome to operate, greatly reducing the replacement time, greatly reducing economic losses, making maintenance simpler and greatly improving maintenance efficiency.

[0039] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An online treatment system for drain internal leakage during unit operation, comprising a steam pipe (3), a drain pipe (4) and a drain header (13), wherein the steam pipe (3) is connected to the drain pipe (4), and the other end of the drain pipe (4) is connected to the drain header (13), characterized in that: The drain pipe (4) and the drain header (13) are connected via a quick release mechanism (14), an online detection system is arranged inside the quick release mechanism (14), the quick release mechanism (14) comprises a water pipe (140), both ends of the water pipe (140) are provided with flanges (141), a first engaging groove (142) and a first clamping strip (143) are provided on the flange (141), a second clamping strip (144) and a second engaging groove (145) are respectively provided on the connection plates of the drain pipe (4) and the drain header (13), the first clamping strip (143) is matched with the second engaging groove (145), and the second clamping strip (144) is matched with the first engaging groove (142).

2. The online treatment system for internal drainage leakage during unit operation according to claim 1, characterized in that: The first engaging groove (142) is an arc-shaped structure, a mounting hole (146) is arranged inside the first engaging groove (142), a spring (147) is arranged inside the mounting hole (146), a chuck (148) is arranged on the upper part of the spring (147), a limit stop groove (149) is arranged on the chuck (148), the first clamping strip (143) is an arc-shaped structure, one end of the first clamping strip (143) is provided with a semicircular through groove adapted to the chuck (148), and the other end of the first clamping strip (143) extends to the upper part of the first engaging groove (142).

3. The online treatment system for internal drainage leakage during unit operation according to claim 2, characterized in that: The second clamping strip (144) is an arc-shaped structure adapted to the first engaging groove (142), and the left and right ends of the second clamping strip (144) are respectively provided with avoidance grooves (150) that are clamped into the lower part of the limit stop groove (149).

4. The online treatment system for internal drainage leakage during unit operation according to claim 3, characterized in that: The connection plates of the drain pipe (4) and the drain header (13) are respectively provided with pin holes, and positioning pins are inserted into the pin holes.

5. The online treatment system for internal drainage leakage during unit operation as claimed in claim 4, characterized in that: The pin hole is a semicircular columnar structure matched with the semicircular through groove, and the positioning pin is matched with the pin hole.

6. The online treatment system for internal drainage leakage during unit operation according to claim 5, characterized in that: A handle is provided on the outer side of the water conduit (140).

7. The online treatment system for internal drainage leakage during unit operation according to claim 6, characterized in that: The online detection system comprises a first valve (5), a second valve (6), a fourth valve (8) and a third valve (7) which are arranged on a water pipe (140) in sequence from a direction close to a steam pipe (3) to a direction away from the steam pipe (3); a drain header (13) is arranged at the end of the third valve (7) away from the fourth valve (8); a first temperature measuring instrument (9) is arranged on the drain pipe (4) between the first valve (5) and the steam pipe (3); a pressure measuring instrument (12) is arranged between the first temperature measuring instrument (9) and the first valve (5); a second temperature measuring instrument (10) is arranged between the first valve (5) and the second valve (6); and a third temperature measuring instrument (11) is arranged between the fourth valve (8) and the third valve (7).

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