CN211120711U

CN211120711U - Condenser with current anti-corrosion function

Info

Publication number: CN211120711U
Application number: CN201921520754.4U
Authority: CN
Inventors: 庞其伟; 孙超
Original assignee: Qingdao Yinghai Anticorrosion Antifouling Technology Co ltd
Current assignee: Qingdao Yinghai Anticorrosion Antifouling Technology Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-07-28
Anticipated expiration: 2029-09-09

Abstract

The utility model discloses a condenser with current anticorrosion function, which comprises a condenser main body, wherein the condenser main body comprises a water chamber, a heat exchange tube and a tube plate which are arranged in the water chamber, and a current anticorrosion module; the current anti-corrosion module comprises a potentiostat, an auxiliary anode, a reference electrode, a cathode line and a zero-cathode line; the water chamber is provided with a threading hole, a supporting rod is further arranged in the water chamber, a mounting seat is arranged on the supporting rod, the auxiliary anode and the reference electrode are respectively mounted on the corresponding mounting seat, a cable connected with the auxiliary anode and a cable connected with the reference electrode are respectively sealed and penetrate through the threading hole, a cathode line is connected with the water chamber, and a cathode line is connected with the water chamber. The auxiliary anode and the reference electrode can be directly arranged on the mounting seat arranged on the supporting rod, so that the corrosion resistance of the condenser is improved.

Description

Condenser with current anti-corrosion function

Technical Field

The utility model relates to the technical field of robot, especially, relate to a condenser with anticorrosive function of electric current.

Background

At present, a condenser is generally arranged in a coastal power station or a petrochemical plant, and the condenser is used for heat exchange. The conventional condenser generally comprises a water chamber and a heat exchange tube arranged in the water chamber, the heat exchange tube is arranged in the water chamber through a tube plate, and the heat exchange tube realizes heat exchange by introducing external seawater.

In order to improve the corrosion resistance, the heat exchange tubes and the tube plates are usually made of titanium, and the corrosion resistance methods matched with the titanium comprise a sacrificial anode method and an impressed current method. In the sacrificial anode method, a large amount of anodes are consumed in the actual use process, which results in high corrosion prevention cost. For the impressed current method, the auxiliary anode and the reference electrode are both installed on the outer wall surface of the water chamber, and as the integral volume of the condenser is larger, the cathodic protection current is smaller and the potential attenuation is more serious along with the increase of the distance from the auxiliary anode; meanwhile, for the heat exchange tube and the tube plate made of titanium, the potential of the heat exchange tube cannot be accurately detected by the reference electrode, so that the potential detection is inaccurate, the problem of hydrogen embrittlement or hydrogen damage of the titanium material is easy to occur, and the safety accident and the corrosion prevention effect of the equipment are poor.

How to design a technique that can guarantee equipment safe operation and can improve anticorrosive effect again simultaneously is the utility model aims to solve the technical problem.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the condenser with the current anti-corrosion function is provided, and the safety and the anti-corrosion effect of the condenser are improved.

The technical scheme provided by the utility model is that a condenser with current anticorrosion function comprises a condenser main body, wherein the condenser main body comprises a water chamber, a heat exchange tube and a tube plate which are arranged in the water chamber, and a current anticorrosion module; the current anti-corrosion module comprises a potentiostat, an auxiliary anode, a reference electrode, a cathode line and a zero cathode line, wherein the potentiostat is provided with a power supply output port, a detection port, a cathode port and a zero cathode port, the auxiliary anode is connected with the power supply output port through a cable, the reference electrode is connected with the detection port through a cable, the cathode line is connected with the cathode port, and the zero cathode line is connected with the zero cathode port; the water chamber is provided with a threading hole, a supporting rod is further arranged in the water chamber, a mounting seat is arranged on the supporting rod, the auxiliary anode and the reference electrode are respectively mounted on the corresponding mounting seat, a cable connected with the auxiliary anode and a cable connected with the reference electrode are respectively sealed and penetrate through the threading hole, a cathode line is connected with the water chamber, and a cathode line is connected with the water chamber.

Further, the auxiliary anode is positioned in the central area of the cavity formed by the water chamber.

Furthermore, a plurality of mutually independent sub-chambers are arranged in the water chamber, and the support rod, the auxiliary anode and the reference electrode are arranged in each sub-chamber; and the auxiliary anode is positioned in the central area of the cavity formed by the corresponding subchambers.

Further, the surface of hydroecium is provided with negative pole connecting terminal and zero negative connecting terminal, negative pole connecting terminal with the negative pole line is connected, zero negative connecting terminal with zero negative line is connected.

Further, the cable located inside the water chamber extends along the support rod.

Furthermore, a protective sleeve is arranged outside the cable and bound on the supporting rod.

Furthermore, a sealing threading module is arranged in the threading hole, the sealing threading module comprises a threading column and a pressing head, a first wire passing hole is formed in the threading column, a step surface is formed in the first wire passing hole, a second wire passing hole is formed in the pressing head, the pressing head is arranged in the first wire passing hole, and a sealing ring is arranged between the pressing head and the step surface; the wire penetrating column is inserted into the wire penetrating hole and is welded on the water chamber in a sealing mode, a cable sequentially penetrates through the first wire passing hole, the sealing ring and the second wire passing hole from the inside of the water chamber to extend to the outside of the water chamber, and the sealing ring wraps the cable in a sealing mode.

Furthermore, an external thread is arranged on the outer surface of one end of the threading column, an annular retaining ring is arranged on the other end of the threading column, the annular retaining ring abuts against the outer surface of the water chamber, and the annular retaining ring is welded with the outer surface of the water chamber in a sealing mode; the sealing threading module further comprises a locking nut, the locking nut is located inside the water chamber and is connected to the threading column through the external threads in a threaded mode, and the locking nut is attached to the inner surface of the water chamber.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the supporting rods are arranged in the water chamber, and the auxiliary anode and the reference electrode can be directly arranged on the mounting seats arranged on the supporting rods, so that the mounting positions of the auxiliary anode and the reference electrode can be adjusted according to the positions of the heat exchange tube and the tube plate in the water chamber, the protection potential in the water chamber is uniformly distributed, and the maximum protection radius can be obtained to cover the central area of the tube plate; in addition, the reference electrode can directly measure the potential of the heat exchange tube and the tube plate, so that the potential detection accuracy is effectively improved, and the phenomenon of hydrogen damage or hydrogen embrittlement of a titanium material can be reduced or avoided, so that the hydrogen embrittlement or hydrogen damage of the condenser is prevented, the condenser is always in a safe state and a comprehensive corrosion control state, and the corrosion resistance of the condenser is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is one of the structural schematic diagrams of the embodiment of the condenser with the current corrosion prevention function of the present invention;

fig. 2 is a reference diagram of the use state of the sealing threading module in the embodiment of the condenser with the current corrosion prevention function of the present invention;

fig. 3 is a second schematic structural diagram of an embodiment of the condenser with current corrosion prevention function according to the present invention;

FIG. 4 is a schematic view of the front compartment of FIG. 3;

fig. 5 is a schematic view of the rear compartment of fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-2, the condenser with current anticorrosion function of the present embodiment includes a condenser main body, the condenser main body includes a water chamber 1, and a heat exchange tube and a tube plate (not shown) disposed in the water chamber 1, and the heat exchange tube is fixed to the water chamber 1 through the tube plate. The arrangement mode of the heat exchange tube and the tube plate in the water chamber 1 is different according to different specifications and use requirements, and the structural form of the condenser body in the embodiment is not limited and described herein. In order to realize the current anti-corrosion treatment of the condenser main body, the condenser also comprises a current anti-corrosion module 2; the current anti-corrosion module 2 comprises a potentiostat 21, an auxiliary anode 22, a reference electrode 23, a cathode line 24 and a zero-cathode line 25, wherein the potentiostat 21 is provided with a power supply output port, a detection port, a cathode port and a zero-cathode port, the auxiliary anode 22 is connected with the power supply output port through a cable, the reference electrode 23 is connected with the detection port through a cable, the cathode line 24 is connected with the cathode port, and the zero-cathode line 25 is connected with the zero-cathode port; wherein, be provided with through wires hole 11 on the hydroecium 1, still be provided with bracing piece 12 in the hydroecium 1, be provided with mount pad 13 on the bracing piece 12, auxiliary anode 22 and reference electrode 23 are installed respectively on corresponding mount pad 13, and cable 3 that auxiliary anode 22 connects and cable 3 that reference electrode 23 connects pass through wires hole 11 respectively sealedly, and the hydroecium 1 is connected to negative pole line 24, and zero negative line 25 connects hydroecium 1.

Specifically, in the condenser having the current corrosion prevention function according to the present embodiment, the auxiliary anode 22 and the reference electrode 23 are installed inside the water chamber 1 by forming the threading hole 11 in the water chamber 1, and the cable 3 connecting the auxiliary anode 22 and the reference electrode 23 is hermetically inserted through the threading hole 11. And in order to satisfy the requirement of installing the auxiliary anode 22 and the reference electrode 23 inside the water chamber 1, the support rod 12 is disposed inside the water chamber 1. The support rod 12 can be welded to fix the two ends of the support rod to the inner wall of the water chamber 1, and the corresponding mounting seats 13 are disposed on the support rod 12, so that the auxiliary anode 22 and the reference electrode 23 can be fixed through the corresponding mounting seats 13. On one hand, because the auxiliary anode 22 and the reference electrode 23 are positioned inside the water chamber 1, and the auxiliary anode 22 is positioned inside the water chamber 1 and is closer to the heat exchange tube and the tube plate, the protection radius of the auxiliary anode 22 can more effectively cover the heat exchange tube and the tube plate, so that the protection potential is uniformly distributed, and the heat exchange tube and the tube plate inside the water chamber 1 can obtain comprehensive current anticorrosion protection; on the other hand, the reference electrode 23 is also installed inside the water chamber 1, and the reference electrode 23 can be close to the tube plate for measurement, so that the measurement accuracy of the reference electrode 23 can be fully ensured, and hydrogen damage or hydrogen embrittlement of the titanium tube plate (titanium heat exchange tube) is avoided. For convenient field connection, the potentiostat 21 may be provided with a junction box 26, through which junction box 26 the connection to the auxiliary anode 22, the reference electrode 23, the cathode line 24 and the zero-cathode line 25 is made. For the concrete structural form of the junction box 26, a conventional wiring mode can be adopted, and no limitation is imposed.

The operation parameters of the current anti-corrosion module 2 are obtained by inputting a preset potential value V to the potentiostat 21, setting a protection potential value, using a protection potential value measured by a reference electrode as a control signal V1 of the potentiostat 21, comparing the protection potential value V with the preset potential value V of the potentiostat 21, and if the protection potential value V is different from the preset potential value V of the potentiostat 21, automatically adjusting the protection current I by the potentiostat 21 according to the protection potential value V, wherein V1 is equal to the V set value, namely meeting the requirement that the protection potential is constant, namely the principle of a fully automatic corrosion control system, namely the constant potential working principle, and for the condenser, the required protection current is I = Σ Si, wherein Ii is the protection current density of various materials in the condenser under different coating conditions, Si is the water immersion area of various materials in the condenser under different coating conditions, and the unit of m2 (for example: the Si is divided into S panel S3, S2 and S3, the heat exchange tube panel S = S3, the water immersion area is obtained by the equation of the anode pressure resistance of the potentiostat 21 + 7, wherein the unit is calculated by the equation of the anode equivalent to the unit of the anode equivalent to the.

In order to facilitate connection of an external cable, a cathode connection terminal (not shown) and a zero-cathode connection terminal (not shown) are provided on an outer surface of the water chamber 1, the cathode connection terminal is connected to the cathode line 24, and the zero-cathode connection terminal is connected to the zero-cathode line 25. Specifically, the surface of hydroecium 1 can adopt welded mode to be provided with cathode connecting terminal and zero negative connecting terminal, and cathode connecting terminal can convenient and fast be connected with negative pole line 24 in hydroecium 1's outside more, and is the same, and zero negative connecting terminal can convenient and fast be connected with zero negative line 25 in hydroecium 1's outside more.

Preferably, in order to enable a more uniform distribution of the protection potential, an auxiliary anode 22 is provided in the central region of the cavity formed by the water chamber 1. Specifically, the auxiliary anode 22 is disposed in the central region of the cavity formed in the water chamber 1 according to the cavity structure formed in the water chamber 1. Like this, supplementary positive pole 22 can be more comprehensive cover the cavity that whole hydroecium 1 formed in the central zone of hydroecium 1 for the heat exchange tube and the tube sheet homoenergetic of each regional position department in hydroecium 1 can obtain more even protection potential, with the degree of effectual reduction potential decay, reach the heat exchange tube and the tube sheet homoenergetic of different positions department and can obtain enough big protection current, with the realization good electric current anticorrosion. Meanwhile, in the case of a large-sized condenser, as shown in fig. 3 to 5, the water chamber 1 is generally divided into a front chamber 101 and a rear chamber 102, and the front chamber 101 and the rear chamber 102 are divided into a plurality of independent sub-chambers 100 as needed, and each sub-chamber 100 is provided with a support rod 12, an auxiliary anode 22, and a reference electrode 23; wherein the auxiliary anode 22 is located in the central region of the cavity formed by the corresponding sub-chambers. Specifically, the support rod 12 is arranged in each sub-chamber 100 to install the auxiliary anode 22 and the reference electrode 23, so that the heat exchange tubes and tube plates in each sub-chamber 100 can be effectively and pertinently protected from corrosion by current.

Further, since the condenser has a large amount of water flowing during the use, and the water flow will affect the cables 3 in the water chamber 1, in order to improve the use reliability, the cables 3 inside the water chamber 1 extend along the support rod 12. Specifically, the cable 3 is guided and supported and positioned by the support rod 12, so that the cable 3 can enhance the resistance to water flow impact, and the use reliability is improved. Preferably, the cable 3 is externally provided with a protective sleeve 4, and the protective sleeve 4 located inside the water chamber 1 is bound to the support rod 12. Specifically, the protective sleeve 4 can protect the cable 3 externally, so as to improve the use reliability of the cable 3 and prolong the service life thereof. Meanwhile, the protective sleeve 4 wraps the cable 3 and then is integrally bound and fixed on the supporting rod 12 through binding components such as a binding belt, so that the installation stability of the cable 3 can be improved more effectively. The cable 3 can be better kept at the installation position under the condition of long-time water flow impact, so that more reliable running performance can be obtained.

Furthermore, in order to ensure that the cable 3 can pass through the water chamber 1 in a sealed manner, the threading hole 11 is provided with the sealing threading module 5, the sealing threading module 5 comprises a threading column 51 and a pressing head 52, a first wire passing hole is formed in the threading column 51, a step surface is formed in the first wire passing hole, a second wire passing hole is formed in the pressing head 52, the pressing head 52 is arranged in the first wire passing hole, and a sealing ring 53 is arranged between the pressing head 52 and the step surface; the threading post 51 is inserted in the threading hole 11 and is sealed and welded on the water chamber 1, the cable sequentially passes through the first wire routing hole, the sealing ring 53 and the second wire routing hole from the inside of the water chamber 1 and extends to the outside of the water chamber 1, and the sealing ring 53 is sealed and wrapped on the cable 3. Specifically, after being inserted into the threading hole 11, the threading column 51 is hermetically connected in the water chamber 1 in a welding mode, the connection part between the threading column 51 and the threading hole 11 is sealed through a welding seam, and the pressing head 52 is located in the first threading hole. The cable 3 is led out from the inside of hydroecium 1 via first wire hole and second wire hole, compresses tightly sealing washer 53 on the step face through pressure head 52, and sealing washer 53 receives behind the extrusion deformation will inseparable sealed parcel live cable 3 to the realization is sealed the processing to cable 3. Wherein, an internal thread is formed in the first wiring hole, and the pressing head 52 is installed in the first wiring hole by adopting a threaded connection mode.

In addition, in order to facilitate installation and fixation of threading post 51, the outer surface of one end of threading post 51 is provided with an external thread, the other end of threading post 51 is provided with an annular retaining ring 511, and sealing threading module 5 further comprises a locking nut 54, wherein locking nut 54 is located inside water chamber 1 and is screwed on threading post 51 through the external thread, and locking nut 54 is attached to the inner surface of water chamber 1. Specifically, after the threading post 51 is installed in the threading hole 11, the annular retainer ring 511 abuts against the outer wall of the water chamber 1. The threading post 51 is pre-fixed on the water chamber 1 from the inside of the water chamber 1 through a locking nut 54, and then the connecting part between the annular retaining ring 511 and the water chamber 1 is welded on the outside of the water chamber 1 through a welding gun, so that the annular retaining ring 511 and the outer surface of the water chamber 1 are welded together in a sealing manner; then, locknut 54 is loosened inside water chamber 1, and wire penetrating column 51 is welded to the inner wall of water chamber 1 from inside water chamber 1; finally, the locking nut 54 is again tightened on the post 51. By installing the sealing thread module 5 in the above manner, it is possible to ensure a good sealing weld zone between the thread passing post 51 and the inner and outer walls of the water chamber 1, thereby improving the sealing performance.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A condenser with a current anticorrosion function comprises a condenser main body, wherein the condenser main body comprises a water chamber, a heat exchange tube and a tube plate which are arranged in the water chamber, and is characterized by further comprising a current anticorrosion module;

the current anti-corrosion module comprises a potentiostat, an auxiliary anode, a reference electrode, a cathode line and a zero cathode line, wherein the potentiostat is provided with a power supply output port, a detection port, a cathode port and a zero cathode port, the auxiliary anode is connected with the power supply output port through a cable, the reference electrode is connected with the detection port through a cable, the cathode line is connected with the cathode port, and the zero cathode line is connected with the zero cathode port;

the water chamber is provided with a threading hole, a supporting rod is further arranged in the water chamber, a mounting seat is arranged on the supporting rod, the auxiliary anode and the reference electrode are respectively mounted on the corresponding mounting seat, a cable connected with the auxiliary anode and a cable connected with the reference electrode are respectively sealed and penetrate through the threading hole, a cathode line is connected with the water chamber, and a cathode line is connected with the water chamber.

2. The condenser with current corrosion prevention function according to claim 1, wherein the auxiliary anode is located in a central region of a cavity formed by the water chamber.

3. The condenser with current corrosion prevention function according to claim 1, wherein a plurality of mutually independent sub-chambers are arranged in the water chamber, and the support rod, the auxiliary anode and the reference electrode are arranged in each sub-chamber; and the auxiliary anode is positioned in the central area of the cavity formed by the corresponding subchambers.

4. The condenser with current corrosion prevention function according to claim 1, wherein a cathode connection terminal and a zero-cathode connection terminal are provided on an outer surface of the water chamber, the cathode connection terminal is connected to the cathode line, and the zero-cathode connection terminal is connected to the zero-cathode line.

5. The condenser with current corrosion prevention function according to claim 1, wherein a cable inside the water chamber is arranged to extend along the support rod.

6. The condenser with the current corrosion prevention function as claimed in claim 5, wherein a protective sleeve is arranged outside the cable, and the protective sleeve is bound on the support rod.

7. The condenser with the current anticorrosion function according to claim 1, wherein a sealing threading module is arranged in the threading hole, the sealing threading module comprises a threading post and a pressing head, a first wire passing hole is formed in the threading post, a step surface is formed in the first wire passing hole, a second wire passing hole is formed in the pressing head, the pressing head is arranged in the first wire passing hole, and a sealing ring is arranged between the pressing head and the step surface; the wire penetrating column is inserted into the wire penetrating hole and is welded on the water chamber in a sealing mode, a cable sequentially penetrates through the first wire passing hole, the sealing ring and the second wire passing hole from the inside of the water chamber to extend to the outside of the water chamber, and the sealing ring wraps the cable in a sealing mode.

8. The condenser with the current corrosion prevention function according to claim 7, wherein an external thread is arranged on the outer surface of one end of the threading column, an annular retaining ring is arranged on the other end of the threading column, the annular retaining ring abuts against the outer surface of the water chamber, and the annular retaining ring is welded with the outer surface of the water chamber in a sealing manner; the sealing threading module further comprises a locking nut, the locking nut is located inside the water chamber and is connected to the threading column through the external threads in a threaded mode, and the locking nut is attached to the inner surface of the water chamber.