CN113451955B - Device and method for installing sensor lead in narrow space through wire protection - Google Patents
Device and method for installing sensor lead in narrow space through wire protection Download PDFInfo
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- CN113451955B CN113451955B CN202110773690.4A CN202110773690A CN113451955B CN 113451955 B CN113451955 B CN 113451955B CN 202110773690 A CN202110773690 A CN 202110773690A CN 113451955 B CN113451955 B CN 113451955B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a device and a method for installing a sensor lead in a protective wire in a narrow space.A connecting tool is adopted, so that the sensor lead can be freely selected to be fixed on the surface of the pipe wall of a heat transfer pipe bundle in a dense heat transfer pipe bundle and protected against water erosion, and the sensor lead can be freely arranged on the surface of the pipe wall to change the direction of space for wiring and outgoing; the sensor lead can be waterproof and scour-proof to the maximum extent; the multi-strand soft sensor lead is drawn and woven into the multi-strand flat lead group which is arranged according to the setting rule by adopting the drawing weaving belt, so that the change of the local hardness of the sensor lead is realized, the flexibility of the lead is changed, and the plasticity and the firmness of the lead are improved; so that the device can be installed according to a set direction, and the device is prevented from being damaged by water scouring during suspension and shaking.
Description
Technical Field
The invention relates to the technical field of sensor installation, in particular to a device and a method for installing a sensor lead in a narrow space.
Background
The working principle of the nuclear power station is as follows: the nuclear fuel of the reactor core of the nuclear power station reactor is excited by neutron irradiation to generate chain fission, huge energy released in the process of chain fission is driven by a main pump to enter coolant of a primary loop of the reactor, the coolant flows out after flowing through the reactor core, the coolant flows out from an outlet pipe of a reactor container to enter a steam generator, heat is transferred to water of two loops under the condition of physical isolation, the water of the two loops is heated to generate steam, and the steam drives a steam turbine, so that a generator coaxial with the steam turbine is driven to generate electricity. Therefore, the steam generator is one of the key devices for transferring and converting heat energy in the power generation process of the nuclear power plant, and the safe and reliable design of the steam generator involves the safe operation of the nuclear power plant.
The steam generator is a primary circuit main device of the pressurized water reactor nuclear power station, is a junction for connecting a primary circuit and a secondary circuit, and has the risk of vibration failure caused by induced flow due to long-term flow scouring of a steam-water mixture. The failure mechanism of flow-induced vibration is various, such as vortex shedding, turbulent excitation, fluid bomb instability and the like, and particularly, the failure of the fluid bomb instability can cause abrasion and breakage of the heat transfer pipe. Therefore, it is necessary to develop a flow-induced vibration mechanism test study of the heat transfer tube bundle of the steam generator, and through the test study, the design is further optimized, so that the occurrence of a severe event of the rupture of the heat transfer tube is avoided, and the improvement of the operation reliability of the equipment is very important.
The experimental research of the steam generator heat transfer pipe beam induced vibration mechanism is developed, and a heat transfer pipe beam induced vibration test piece needs to be designed to complete the experimental research. The original shape and size of the steam generator are huge, and the installation space of the experiment bench cannot meet the installation requirement, so that a part of structure of a steam generator prototype is generally intercepted and used as a test piece model. A plurality of test points are arranged in the heat transfer tube bundle, and various mechanical parameters such as vibration amplitude, vibration acceleration, vibration frequency, strain parameters and the like required by data analysis of the flow-induced vibration test are obtained by a plurality of sensors arranged on the surface of the tube and in the tube.
The test piece is a test assembly formed by restraining a heat transfer tube bundle by a support plate which is distributed with densely arrayed holes, and is used for replacing a steam generator. In the test piece, the outer diameter of a single heat transfer pipe is smaller than 18cm, the wall thickness of the pipe is 1 mm-1.2 mm, heat transfer pipe bundles are arranged according to an array to form densely arranged pipe bundle assemblies, and the gaps among the pipes are in millimeter level. The schematic view of the fitting constraint relationship between the support plate and the heat transfer tube bundle in the test piece of the present invention is shown in FIG. 2.
When a steam generator heat transfer tube bundle test assembly is subjected to flow-induced vibration test, the flow-induced vibration test assembly is limited by narrow internal structural space of a test body and severe environment of high-speed flowing water scouring, if strain test points are arranged on heat transfer tubes inside the tube bundle, the heat transfer tube bundle is formed by restraining support plates formed by array holes in dense array arrangement, the heat transfer tubes are vertically inserted into array tube holes in the support plates, and structural gaps are formed between the array tube holes and the heat transfer tubes (the maximum space at the gaps is less than 3 mm). The fitting constraint relationship between the inner support plate of the test piece and the heat transfer pipe and the relationship between the inner support plate of the test piece and the circulating water flowing path are shown in detail in fig. 2. The structural gaps are formed between the heat transfer pipes and the array pipe holes in the support plate after assembly, and during experiments, circulating water flows through the structural gaps from bottom to top under the extrusion of the structural gaps to form flowing water with higher pressure and higher flow speed. However, the wiring lead-out fixing path of the sensor lead on the heat transfer pipe in the test piece can only be led out along the path wiring as in fig. 2, and the circulating water flowing direction is as indicated by the arrow in fig. 2, thereby causing great difficulty in wiring and fixing the sensor lead on the heat transfer pipe.
Generally, the strain test points cannot be arranged on the heat transfer pipe inside the pipe bundle, the strain test points are generally arranged at the edge of the pipe bundle, the waterproof strain gauge is pasted, the rubber sleeve is sleeved on the surface of the strain gauge, the protective strain gauge is damaged by being washed away by running water, the lead of the strain gauge is fixed on the surface of the heat transfer pipe by being tied up by an enameled wire, and the body is led out from the lead hole of the body on the side surface of the pipe bundle (the lead is in a suspension shape from the surface of the heat transfer pipe to the wire outlet on the body).
The defects of the prior art are as follows:
1. the method has the advantages that the required strain test points cannot be arranged at any position in the tube bundle area, comprehensive strain test data of the heat transfer tube bundle assembly cannot be obtained, a complete strain test database cannot be established, and the overall structural design cannot be comprehensively optimized;
2. when the lead of the strain gauge is led out from the side, the suspension lead is influenced by high-speed flowing water, so that a larger random swing test error is led into the lead;
3. the lead of the strain gauge in a narrow space is easy to be broken by water scouring and fail;
4. the strain gauge leads are soft leads, and can not be wired and fixed when being transferred from the heat transfer pipe to the supporting plate in the direction vertical to the heat transfer pipe, and can not bear the scouring of high-speed running water. It is desirable to develop a device and a method for installing a sensor lead in a narrow space for protecting wires to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and designs a protective wire installation device and a protective wire installation method for a sensor lead in a narrow space.
The invention realizes the purpose through the following technical scheme:
a wire-protecting installation device of a sensor lead in a narrow space comprises:
connecting a tool; the connecting tool comprises two fixed root welding parts and two steering fixed welding belts, the first ends of the two steering fixed welding belts are connected with each other, the two steering fixed welding belts are respectively connected with the side parts of the first ends of the two fixed root welding parts, and the steering fixed welding belts are perpendicular to the fixed root welding parts; the second ends of the two steering fixed welding belts are arranged in a hanging way; a wire protecting clamping groove is formed between the first ends of the two steering fixed welding belts;
a plurality of traction braids; the first ends of the plurality of traction braided belts are arranged at the bottom of the fixed root welding part and are welded on the surface of the heat transfer tube bundle together with the fixed root welding part; the second ends of the traction braided belts are arranged in a suspended mode, and the arrangement direction of the traction braided belts is the same as that of the steering fixed welding belts; the first parts of the sensor leads are arranged on the surface of the heat transfer tube bundle, and are welded on the surface of the heat transfer tube bundle after the fixed root welding part and the traction braided belt are welded on the surface of the heat transfer tube bundle, the first parts of the sensor leads are arranged in the wire protecting clamp groove, the second parts of the sensor leads penetrate out of the wire protecting clamp groove towards the second end of the steering fixed welding belt and are bent, the bent part is wrapped after being curled by the two steering fixed welding belts, and the second parts of the sensor leads form an included angle with the surface of the heat transfer tube bundle after being bent; and a plurality of traction braided belts are respectively spirally wound on a plurality of sensor leads.
The method for installing the sensor lead in the guard wire in the narrow space adopts a device for installing the sensor lead in the guard wire in the narrow space, and comprises the following steps:
s1, wiring the sensor lead to the position near the fixed position of the mounting support plate along the tube wall of the heat transfer tube bundle, sleeving a layer of waterproof heat-shrinkable sleeve, and pasting and fixing the lead by using an adhesive tape temporarily;
s2, placing first ends of a plurality of traction braided straps on the wall of the heat transfer tube bundle, placing two fixed root welding parts on the wall of the heat transfer tube bundle, placing a first part of a sensor lead in a wire protecting clamp groove, leading a second part of the sensor lead out of a free end of the wire protecting clamp groove, pressing the plurality of traction braided straps by the fixed root welding parts, and welding the first ends of the plurality of traction braided straps and the two fixed root welding parts on the wall of the heat transfer tube bundle;
s3, bending the second parts of the sensor leads, wherein the bent sensor leads are vertical to the surface of the heat transfer tube bundle, and the sensor leads are neatly stroked;
s4, curling the turning fixing welding strips on one side provided with the folding line openings, tightly wrapping the bent parts of the sensor leads, then curling the other turning fixing welding strip, tightly wrapping the bent parts of the sensor leads in the reverse direction, and welding the two turning fixing welding strips on the surface of the heat transfer tube bundle;
s5, correspondingly, spirally winding the second part of each sensor lead through each traction braided belt;
s6, placing the second parts of all the sensor leads in the wiring grooves and laying the second parts along the wiring grooves formed in the supporting plate;
and S7, filling the wiring groove with waterproof glue, and fixing the position of the second part of the sensor lead.
The invention has the beneficial effects that:
1. by adopting the connecting tool, the sensor leads can be freely selected to be fixed on the surface of the tube wall of the heat transfer tube bundle and protected against water erosion when being arranged in the dense heat transfer tube bundle, and the sensor leads can be arranged and led out in the direction of the conversion space of the surface of the tube wall which is randomly arranged; the sensor lead can be waterproof and scour-proof to the greatest extent;
2. the multi-strand soft sensor lead is drawn and woven into the multi-strand flat lead group which is arranged according to the setting rule by adopting the drawing weaving belt, so that the change of the local hardness of the sensor lead is realized, the flexibility of the lead is changed, and the plasticity and the firmness of the lead are improved; so that the device can be installed according to a set direction, and the device is prevented from being damaged by water scouring during suspension and shaking.
Drawings
FIG. 1 is a flow chart of a method of the present invention;
fig. 2 is a schematic view of the installation position of the sensor lead wire in the present invention.
FIG. 3 is a schematic structural view of the connecting tool of the present invention before it is machined;
FIG. 4 is a first schematic structural diagram of the connecting tool after processing;
FIG. 5 is a second schematic structural view of the connecting tool after processing;
FIG. 6 is a first view of the installation structure of the connecting tool on the heat transfer tube bundle of the present invention;
FIG. 7 is a second schematic view of the installation structure of the connecting tool on the heat transfer tube bundle of the present invention;
FIG. 8 is a schematic view of the connection method of the pulling braid and the sensor lead in the present invention;
in the figure: 1-fixing the root weld; 2-turning and fixing the welding belt; 21-wire protection clamp plate; 3-transverse fold lines; 4-fold line opening; 5-vertical folding lines; 6-cutting the line; 7-traction braided belts; 8-a heat transfer tube bundle; 9-sensor leads; 10-a support plate;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "inside", "outside", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the products of the present invention are conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" and the like are to be broadly construed, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
As shown in fig. 4 to 7, the wire guard mounting device for sensor lead wire in narrow space comprises:
connecting a tool; the connecting tool comprises two fixed root welding parts 1 and two steering fixed welding belts 2, first ends of the two steering fixed welding belts 2 are connected with each other, the two steering fixed welding belts 2 are respectively connected with the side parts of the first ends of the two fixed root welding parts 1, and the steering fixed welding belts 2 are perpendicular to the fixed root welding parts 1; the second ends of the two steering fixed welding belts 2 are arranged in a suspended way; a wire protecting clamping groove is formed between the first ends of the two steering fixed welding belts 2;
a plurality of traction braided belts 7; the first ends of the plurality of traction braided belts 7 are arranged at the bottom of the fixed root welding part 1 and are welded on the surface of the heat transfer tube bundle 8 together with the fixed root welding part 1; the second ends of the traction braided belts 7 are arranged in a suspended mode, and the arrangement direction of the traction braided belts is the same as that of the steering fixed welding belts 2; the first parts of the sensor leads 9 are arranged on the surface of the heat transfer tube bundle 8, after the fixed root welding part 1 and the traction braided belt 7 are welded on the surface of the heat transfer tube bundle 8, the first parts of the sensor leads 9 are arranged in the wire protecting clamping groove, the second parts of the sensor leads 9 penetrate out of the wire protecting clamping groove towards the second end of the steering fixed welding belt 2 and are bent, the bent part is wrapped after the two steering fixed welding belts 2 are curled, and the second parts of the sensor leads 9 are bent and are perpendicular to the surface of the heat transfer tube bundle 8; the plurality of traction braided belts 7 are respectively spirally wound around the plurality of sensor leads 9. The number of the pulling braids 7 is the same as the number of the sensor leads 9.
As shown in fig. 3, a joint of one fixed root welding portion 1 and one fixed turning welding strip 2 is provided with a folding line opening 4, and the folding line opening 4 is opened in a direction close to the second end of the fixed turning welding strip 2.
The traction braided belt 7 is made of plastic metal material. In some embodiments the pulling braid 7 is made of ultra-thin soft stainless steel foil material.
As shown in fig. 1, the method for installing a sensor lead in a guard wire in a narrow space, which adopts a device for installing a sensor lead in a guard wire in a narrow space, comprises the following steps:
s1, wiring the sensor lead 9 to the position near the fixed position of the mounting support plate 10 along the tube wall of the heat transfer tube bundle 8, sheathing a layer of waterproof heat-shrinkable sleeve, and pasting and fixing the lead by using adhesive tape temporarily;
s2, placing first ends of a plurality of traction braided straps 7 on the tube wall of a heat transfer tube bundle 8, placing two fixed root welding parts 1 on the tube wall of the heat transfer tube bundle 8, placing a first part of a sensor lead 9 in a wire protecting clamp groove, leading a second part of the sensor lead 9 out of a free end of the wire protecting clamp groove, pressing the plurality of traction braided straps 7 by the fixed root welding parts 1, and then welding the first ends of the plurality of traction braided straps 7 and the two fixed root welding parts 1 on the tube wall of the heat transfer tube bundle 8;
s3, bending the second parts of the sensor leads 9, wherein the bent sensor leads 9 are perpendicular to the surface of the heat transfer tube bundle 8, and the sensor leads 9 are neatly stroked;
s4, curling the turning fixed welding strips 2 on one side provided with the folding line openings 4, tightly wrapping the bent parts of the sensor leads 9, then curling the other turning fixed welding strip 2, tightly wrapping the bent parts of the sensor leads 9 in the reverse direction, and then welding the two turning fixed welding strips 2 on the surface of the heat transfer tube bundle 8;
s5, spirally winding a second portion of each sensor lead 9 correspondingly through each pulling braid 7; the spiral winding is gap winding; the weaving process for weaving the multi-strand flat lead group by adopting the traction weaving belt 7 and the sensor lead 9 comprises the following steps: the traction braided strap 7 is a gravity strap and a winding wrapping strap, leads are wound in a close fit manner regularly one by one, and a plurality of leads are drawn to be closely arranged side by side to form a plurality of flat lead groups braided by the traction strap, and the operation method of the braiding process is shown in figure 8. The process solves the problem that the lead is easy to break and damage due to the pulling of the lead in the process of converting the direction in the air and weaving and fixing the lead, and the toughness and the firmness of the lead are enhanced due to the weaving of the traction belt; the change of the local hardness of the sensor lead 9 is realized; orderly weaving a plurality of leads into flat lead groups arranged in parallel;
s6, placing the second parts of all the sensor leads 9 in the wiring grooves and laying the second parts along the wiring grooves formed in the supporting plate 10;
s7, the wiring groove is filled with waterproof glue to fix the position of the second portion of the sensor lead 9.
As shown in fig. 3-5, the connection frock in this application is made of ultra-thin soft stainless steel paper foil material, and the original material forms into trapezoidally, and the mark has horizontal folding line 3, folding line opening 4, vertical folding line 5, cutting line 6 on the connection frock, and the manufacture process of connection frock is: folding the joint of the fixed root welding part 1 and the steering fixed welding belt 2 along a transverse folding line 3, and cutting a small section along an opening 4 of the folding line (used as an opening for leading out a lead when the root of a sensor lead 9 is subsequently wrapped in the conversion direction); the two fixed root welding parts are divided into two parts through the cutting lines 6 to form two fixed root welding sheets, and two wire protection clamping grooves are formed between the wire protection clamping plates 21 of the two fixed welding belts 2 after the two fixed root welding parts are folded through the vertical folding lines 5. Through the manufacturing, the structure shown in fig. 4 and 5 is obtained, and finally, the mounting structure shown in fig. 6 can be formed by performing limit welding during mounting.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (7)
1. Sensor lead wire is at narrow space's protecting wire installation device, its characterized in that includes:
connecting a tool; the connecting tool comprises two fixed root welding parts and two steering fixed welding belts, the first ends of the two steering fixed welding belts are connected with each other, the two steering fixed welding belts are respectively connected with the side parts of the first ends of the two fixed root welding parts, and the steering fixed welding belts are perpendicular to the fixed root welding parts; the second ends of the two steering fixed welding belts are arranged in a hanging way; a wire protecting clamping groove is formed between the first ends of the two steering fixed welding belts;
a plurality of traction braids; the first ends of the plurality of traction braided belts are arranged at the bottom of the fixed root welding part and are welded on the surface of the heat transfer tube bundle together with the fixed root welding part; the second ends of the traction braided belts are arranged in a suspended mode, and the arrangement direction of the traction braided belts is the same as that of the steering fixed welding belts; the first parts of the sensor leads are arranged on the surface of the heat transfer tube bundle, and are welded on the surface of the heat transfer tube bundle after the fixed root welding part and the traction braided belt are welded on the surface of the heat transfer tube bundle, the first parts of the sensor leads are arranged in the wire protecting clamp groove, the second parts of the sensor leads penetrate out of the wire protecting clamp groove towards the second end of the steering fixed welding belt and are bent, the bent part is wrapped after being curled by the two steering fixed welding belts, and the second parts of the sensor leads form an included angle with the surface of the heat transfer tube bundle after being bent; and a plurality of traction braided belts are respectively spirally wound on a plurality of sensor leads.
2. A grommet mounting apparatus for sensor leads in a narrow space as set forth in claim 1, wherein the second portions of the plurality of sensor leads are perpendicular to the surface of the heat transfer tube bundle.
3. The device for mounting a sensor lead in a narrow space according to claim 1, wherein a joint of one of the fixed root welding portions and one of the steering fixing welding strips is provided with a folding line opening, and the folding line opening is opened in a direction close to the second end of the steering fixing welding strip.
4. The wire protector mounting device for sensor leads in a narrow space according to claim 1, wherein the number of the pulling braid is the same as the number of the sensor leads.
5. The device for installing a sensor lead in a narrow space according to claim 1, wherein the pulling braid is made of a plastic metal material.
6. A method for installing a sensor lead in a narrow space by using the device for installing a sensor lead in a narrow space according to any one of claims 1 to 5, comprising the steps of:
s1, wiring the sensor lead to the position near the fixed position of the mounting support plate along the tube wall of the heat transfer tube bundle, sleeving a layer of waterproof heat-shrinkable sleeve, and pasting and fixing the lead by using an adhesive tape temporarily;
s2, placing first ends of a plurality of traction braided straps on the wall of the heat transfer tube bundle, placing two fixed root welding parts on the wall of the heat transfer tube bundle, placing a first part of a sensor lead in a wire protecting clamp groove, leading a second part of the sensor lead out of a free end of the wire protecting clamp groove, pressing the plurality of traction braided straps by the fixed root welding parts, and welding the first ends of the plurality of traction braided straps and the two fixed root welding parts on the wall of the heat transfer tube bundle;
s3, bending the second parts of the sensor leads, wherein the bent sensor leads are vertical to the surface of the heat transfer tube bundle, and the sensor leads are neatly stroked;
s4, curling the turning fixing welding belts on the side provided with the folding line openings, tightly wrapping the bent parts of the sensor leads, then curling the other turning fixing welding belt, tightly wrapping the bent parts of the sensor leads reversely, and welding the two turning fixing welding belts on the surface of the heat transfer tube bundle;
s5, correspondingly winding the second part of each sensor lead through each traction braided belt in a spiral mode;
s6, placing the second parts of all the sensor leads in the wiring grooves and laying the second parts along the wiring grooves formed in the supporting plate;
and S7, filling the wiring groove with waterproof glue, and fixing the position of the second part of the sensor lead.
7. The method of claim 6, wherein the spiral winding of the second portion of the sensor lead by the pulling braid is gap winding.
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| CN202110773690.4A CN113451955B (en) | 2021-07-08 | 2021-07-08 | Device and method for installing sensor lead in narrow space through wire protection |
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| CN202110773690.4A CN113451955B (en) | 2021-07-08 | 2021-07-08 | Device and method for installing sensor lead in narrow space through wire protection |
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| CN113451955B true CN113451955B (en) | 2022-06-24 |
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