Cable protection structure under low-temperature corrosive medium working condition
By using corrugated metal hoses and multiple sealing structures in the submersible pump cable, the problems of cable corrosion and lack of support in low-temperature corrosive media are solved, achieving effective protection and extended service life of the cable.
Patent Information
- Application Number
- CN202520331264.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Submersible pump cables are prone to corrosion in low-temperature corrosive conductive media, and their insulation layer is damaged. Long-term lack of support and stress also leads to a reduced lifespan.
Corrugated metal hoses are used for sealing and media isolation. The cable is fixed and supported in sections. Multiple seals are achieved by combining sealing rings and gaskets. Steel wire ropes are used to suspend the cable to avoid long-term stress. Matching guide components limit cable displacement.
It effectively prevents corrosion and insulation damage, extends cable life, and avoids damage caused by long-term stress.
Smart Images
Figure CN223894485U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a cable protection structure for low-temperature corrosive media conditions, and particularly to a cable protection structure for low-temperature corrosive media conditions. Background Technology
[0002] The submersible pump is completely submerged in a low-temperature corrosive and conductive medium, and long-distance power and signal cables are in contact with this medium. This prolonged contact leads to the following potential problems:
[0003] 1. Corrosion problem: In low-temperature corrosive conductive media, the metal parts of the cable are prone to chemical reactions and corrosion, which can cause the motor to fail to work;
[0004] 2. Insulation problems: Low-temperature corrosive conductive media entering the cable interior can damage the cable insulation layer, and in severe cases, it can cause a short circuit in the cable.
[0005] 3. Fixed support problem: According to the actual operating conditions of the submersible pump under low temperature corrosive and conductive medium conditions, the pump is installed at the bottom of the pump well. The power and signal transmission between the pump head and the external environment must be transmitted through tens of meters of cable. The cable is unsupported for a long time, which leads to a reduction in its lifespan or even damage.
[0006] In view of the problems existing in the above-mentioned existing technologies, it is necessary to study and design a new type of cable protection structure for low-temperature corrosive media conditions, so as to overcome the problems existing in the existing technologies. Summary of the Invention
[0007] To address the technical problems mentioned above, such as cables being prone to corrosion due to chemical reactions with conductive media, short circuits caused by conductive media entering the cable interior, and reduced cable lifespan due to prolonged lack of support, this invention provides a cable protection structure for low-temperature corrosive media conditions. This invention primarily uses a corrugated metal flexible hose for sealing, achieving isolation from the medium and preventing corrosion. Simultaneously, the corrugated metal flexible hose and cable are individually fixed and supported section by section to prevent prolonged lack of support, which could reduce their lifespan or even cause damage.
[0008] The technical means adopted in this utility model are as follows:
[0009] A cable protection structure for low-temperature corrosive media includes: a top plate component, a pump well, an instrument corrugated metal hose, an electrical corrugated metal hose, a cable fixing support, a pump head support wire rope, a power cable, and an instrument cable;
[0010] Furthermore, the instrument cables and power cables inside the pump well are respectively fitted with instrument corrugated metal hoses and electrical corrugated metal hoses.
[0011] Furthermore, the upper and lower ends of the instrument cable are connected to the cables on the external instrument and the internal instrument of the pump head via connecting cables, respectively.
[0012] Furthermore, the upper and lower ends of the power cable are connected to the cables on the external power equipment and the cables on the internal power structure of the pump head via connecting cables, respectively.
[0013] Furthermore, the upper and lower ends of the instrument corrugated metal hose and the electrical corrugated metal hose are respectively connected to the flange of the top plate component at the top of the pump well and the flange on the pump head.
[0014] The instrument corrugated metal hose and the electrical corrugated metal hose are fixed by cable fixing support, and then the whole assembly is fixed to the pump head support wire rope.
[0015] Furthermore, the instrument's corrugated metal flexible hose is also fitted with a cable support wire rope;
[0016] Furthermore, the bottom end of the cable support wire rope is connected to the pump head, and the top end is suspended on the lifting ring at the lower end of the instrument blind flange at the instrument flange opening on the top plate component by fasteners, so as to avoid the instrument cable being under stress for a long time and affecting its service life.
[0017] Furthermore, a metal spiral wound gasket is used to seal the connection between the instrument blind flange and the instrument flange opening.
[0018] Furthermore, the power cable support cable is suspended on the lower end of the electrical blind flange at the electrical flange opening on the top plate component by fasteners, so as to avoid the power cable being under stress for a long time and affecting its service life.
[0019] Furthermore, a metal spiral wound gasket is used to seal the electrical blind flange and the electrical flange opening.
[0020] Furthermore, the flange opening of the instrument corrugated metal hose and the connection port of the top plate component are sealed with a first sealing ring, a second sealing ring and a sealing gasket to ensure its airtightness.
[0021] Furthermore, the connection between the flange opening of the electrical corrugated metal flexible hose and the top plate component is achieved through multiple sealing methods, including a first sealing ring, a second sealing ring, and a gasket, to ensure its airtightness.
[0022] Furthermore, the flange of the instrument corrugated metal hose and the flange of the pump head flange are sealed with a first sealing ring, a second sealing ring and a sealing gasket to ensure its sealing performance.
[0023] Furthermore, the flange of the electrical corrugated metal hose and the flange of the pump head flange are sealed with a first sealing ring, a second sealing ring and a gasket to ensure its sealing performance.
[0024] Furthermore, the instrument corrugated metal hose and the electrical corrugated metal hose are fixed with cable fixing support every 3m or so, and then the whole assembly is fixed to the pump head support wire rope.
[0025] Furthermore, a guide assembly is installed on the cable fixing support, and the pulleys at both ends of the guide assembly abut against the inner wall of the pump well.
[0026] The pump well in this case contains a corrosive and conductive medium. To prevent the medium from leaking into the corrugated metal hose, in addition to the mechanical static seal, the sealing cavity must be filled with nitrogen gas at a pressure higher than that of the medium inside the pump well. At the same time, the pressure is monitored in real time so that any leakage can be dealt with promptly.
[0027] Compared with the prior art, the present invention has the following advantages:
[0028] 1. The low-temperature corrosive medium working condition cable protection structure provided by this utility model installs power and instrument cables in a corrugated metal hose. The flange faces on both sides of the hose are sealed with adjacent parts by double-layer sealing rings and sealing gaskets to achieve isolation from the medium and prevent low-temperature corrosive conductive media from entering the hose and causing corrosion and a decrease in insulation performance.
[0029] 2. The low-temperature corrosive medium working condition cable protection structure provided by this utility model has the cable and corrugated metal hose installed vertically inside the pump well. The instrument cable is fixed and supported by steel wire rope and finally suspended at the instrument blind flange on the top plate. The power cable is fixed and supported by grounding cable and finally suspended at the electrical blind flange on the top plate. This avoids the cable and hose being subjected to stress for a long time, which would reduce their lifespan or even damage them.
[0030] 3. The cable protection structure for low-temperature corrosive media provided by this utility model, with matching guide components, restricts the radial displacement of the cable assembly as a whole, reduces swaying and collision, and extends its service life.
[0031] In summary, the technical solution of this utility model solves the problems in the prior art, such as cables being prone to corrosion due to chemical reactions with conductive media, short circuits caused by conductive media entering the cable interior damaging the insulation layer, and reduced lifespan due to long-term lack of support. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the structure of this utility model;
[0034] Figure 2 This utility model Figure 1 AA section diagram;
[0035] Figure 3 This utility model Figure 1 Enlarged view of part I;
[0036] Figure 4 This utility model Figure 1 A magnified view of Part II.
[0037] In the diagram: 1. Instrument blind flange; 2. Electrical blind flange; 3. Top plate component; 4. Pump well; 5. Instrument corrugated metal hose; 6. Electrical corrugated metal hose; 7. Cable fixing support; 8. Pump head support wire rope; 9. Cable support wire rope; 10. Power cable; 11. Instrument cable; 12. Guide assembly; 13. Sealing gasket; 14. First sealing ring; 15. Second sealing ring. Detailed Implementation
[0038] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0041] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0042] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0043] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0045] As shown in the figure, this utility model provides a cable protection structure for low-temperature corrosive media conditions, including: a top plate component 3, a pump well 4, an instrument corrugated metal hose 5, an electrical corrugated metal hose 6, a cable fixing support 7, a pump head support wire rope 8, a power cable 10, and an instrument cable 11. The instrument cable 11 and power cable 10 inside the pump well 4 are respectively fitted with the instrument corrugated metal hose 5 and the electrical corrugated metal hose 6. The upper and lower ends of the instrument cable 11 are connected to cables on external instruments and internal instruments of the pump head via connecting cables. The upper and lower ends of the power cable 10 are connected to cables on external power equipment and cables on the internal power structure of the pump head via connecting cables. The upper and lower ends of the instrument corrugated metal hose 5 and the electrical corrugated metal hose 6 are connected to the flanges of the top plate component 3 at the top of the pump well 4 and the flanges on the pump head, respectively. The instrument corrugated metal hose 5 and the electrical corrugated metal hose 6 are fixed by the cable fixing support 7 and then fixed as a whole to the pump head support wire rope 8.
[0046] The instrument corrugated metal hose 5 is also fitted with a cable support wire rope 9; the bottom end of the cable support wire rope 9 is connected to the pump head, and the top end is suspended on the lifting ring at the lower end of the instrument blind flange 1 at the instrument flange opening on the top plate component 3 by fasteners, so as to avoid the instrument cable 11 being under long-term stress and affecting its service life; the instrument blind flange 1 and the instrument flange opening are sealed with a metal spiral wound gasket.
[0047] The power cable 10 is supported by a hanging ring on the lower end of the electrical blind flange 2, which is fastened to the electrical flange opening on the top plate component 3 by fasteners, to prevent the power cable 10 from being subjected to long-term stress and affecting its lifespan; a metal spiral wound gasket is used to seal between the electrical blind flange 2 and the electrical flange opening.
[0048] The flange opening of the instrument corrugated metal hose 5 and the connection port of the top plate component 3 are sealed with multiple layers of sealing using a first sealing ring 14, a second sealing ring 15, and a sealing gasket 13 to ensure its airtightness; the flange opening of the electrical corrugated metal hose 6 and the connection port of the top plate component 3 are sealed with multiple layers of sealing using a first sealing ring 14, a second sealing ring 15, and a sealing gasket 13 to ensure its airtightness.
[0049] The flange of the instrument corrugated metal hose 5 and the flange opening of the pump head flange are sealed by a first sealing ring 14, a second sealing ring 15 and a sealing gasket 13 to ensure its sealing performance; the flange of the electrical corrugated metal hose 6 and the flange opening of the pump head flange are sealed by a first sealing ring 14, a second sealing ring 15 and a sealing gasket 13 to ensure its sealing performance.
[0050] The instrument corrugated metal hose 5 and the electrical corrugated metal hose 6 are fixed with cable fixing supports 7 every 3m or so, and then the whole assembly is fixed to the pump head support wire rope 8.
[0051] The cable fixing support 7 is equipped with a guide assembly 12, and the pulleys at both ends of the guide assembly 12 abut against the inner wall of the pump well 4.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A cable protection structure for low-temperature corrosive media conditions, characterized in that: The cable protection structure for low-temperature corrosive media includes: top plate component (3), pump well (4), instrument corrugated metal hose (5), electrical corrugated metal hose (6), cable fixing support (7), pump head support wire rope (8), power cable (10), and instrument cable (11). The instrument cable (11) and power cable (10) inside the pump well (4) are respectively fitted with instrument corrugated metal hose (5) and electrical corrugated metal hose (6); The upper and lower ends of the instrument cable (11) are respectively connected to the cables on the external instrument and the internal instrument of the pump head via connecting cables; The upper and lower ends of the power cable (10) are respectively connected to the cable on the external power equipment and the cable on the power structure inside the pump head through connecting cables; The upper and lower ends of the instrument corrugated metal hose (5) and the electrical corrugated metal hose (6) are respectively connected to the flange of the top plate component (3) at the top of the pump well (4) and the flange on the pump head. The instrument corrugated metal hose (5) and the electrical corrugated metal hose (6) are fixed by cable fixing support (7) and then fixed as a whole on the pump head support wire rope (8).
2. The cable protection structure for low-temperature corrosive media conditions according to claim 1, characterized in that: The instrument corrugated metal hose (5) is also fitted with a cable support wire rope (9); The bottom end of the cable support wire rope (9) is connected to the pump head, and the top end is suspended on the lifting ring at the lower end of the instrument blind flange (1) at the instrument flange opening on the top plate component (3) by fasteners, so as to avoid the instrument cable (11) being subjected to stress for a long time and affecting its lifespan. The instrument blind flange (1) is sealed to the instrument flange opening using a metal spiral wound gasket.
3. The cable protection structure for low-temperature corrosive media conditions according to claim 1, characterized in that: The power cable (10) is suspended on the lower end of the electrical blind flange (2) at the electrical flange opening on the top plate component (3) by fasteners, so as to avoid the power cable (10) being subjected to long-term stress and affecting its lifespan. The electrical blind flange (2) is sealed to the electrical flange opening using a metal spiral wound gasket.
4. The cable protection structure for low-temperature corrosive media conditions according to claim 1, characterized in that: The flange opening of the instrument corrugated metal hose (5) and the connection port of the top plate component (3) are sealed by a first sealing ring (14), a second sealing ring (15) and a sealing gasket (13) to ensure its sealing performance. The flange opening of the electrical corrugated metal flexible hose (6) and the connection port of the top plate component (3) are sealed by a first sealing ring (14), a second sealing ring (15) and a sealing gasket (13) to ensure its airtightness.
5. The cable protection structure for low-temperature corrosive media conditions according to claim 1, characterized in that: The flange of the instrument corrugated metal hose (5) and the flange of the pump head flange are sealed by a first sealing ring (14), a second sealing ring (15) and a sealing gasket (13) to ensure its sealing performance. The flange of the electrical corrugated metal hose (6) and the flange of the pump head flange are sealed by a first sealing ring (14), a second sealing ring (15) and a sealing gasket (13) to ensure its sealing performance.
6. The cable protection structure for low-temperature corrosive media conditions according to claim 1, characterized in that: The instrument corrugated metal hose (5) and the electrical corrugated metal hose (6) are fixed with cable fixing support (7) every 3m or so, and then the whole assembly is fixed on the pump head support wire rope (8).
7. The cable protection structure for low-temperature corrosive media conditions according to claim 1 or 6, characterized in that: The cable fixing support (7) is equipped with a guide assembly (12), and the pulleys at both ends of the guide assembly (12) abut against the inner wall of the pump well (4).