CN114593873A - Tube bundle leakage detection tool and tube bundle leakage blocking tool - Google Patents
Tube bundle leakage detection tool and tube bundle leakage blocking tool Download PDFInfo
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- CN114593873A CN114593873A CN202011431591.XA CN202011431591A CN114593873A CN 114593873 A CN114593873 A CN 114593873A CN 202011431591 A CN202011431591 A CN 202011431591A CN 114593873 A CN114593873 A CN 114593873A
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- 238000000034 method Methods 0.000 description 4
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- 229910000975 Carbon steel Inorganic materials 0.000 description 1
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- 239000010962 carbon steel Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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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
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Abstract
The application discloses tube bank leak hunting instrument and tube bank leaking stoppage instrument belongs to air cooler and overhauls technical field. The tube bundle leak detection tool includes: a center tube and a locking assembly; along the axial direction of the central tube, the central tube comprises a head part and a middle part, the head part is conical, and a step is raised at the position, close to the middle part, of the outer side of the head part; the locking assembly is sleeved outside the central pipe, and the locking assembly is adjustable in position in the axial direction of the central pipe; the head of the central tube is used for penetrating into a port of the tube bundle, the step is used for clamping the port of the tube bundle, and the locking assembly is used for moving in the axial direction of the central tube to be locked with a tube box connected with the port of the tube bundle. The application solves the problems that the determination accuracy of a damaged tube bundle in the air cooler is low and the leakage stoppage effect of the tube bundle is poor. The application is used for determining damaged tube bundles in an air cooler.
Description
Technical Field
The application relates to the technical field of air cooler overhaul, in particular to a tube bundle leakage detecting tool and a tube bundle leakage blocking tool.
Background
At present, air coolers are more and more widely used, and can be used for cooling oil and gas in oil and gas processing production.
The air cooler comprises a plurality of tube bundles, and oil gas flows through the tube bundles. Oil gas in this tube bank can reveal from this tube bank when the tube bank takes place the damage, and the staff is direct confirms damaged tube bank in the air cooler through the position that the oil gas of revealing drips, and then carries out the leaking stoppage to this tube bank, avoids this tube bank to the influence of air cooler. But because the configuration of these many tube bundles is compact, the position that the oil gas that reveals in the tube bundle drips is located the below of many tube bundles, and the staff can't accurately confirm the position of damaged tube bundle.
Therefore, the accuracy of determining the damaged tube bundle in the air cooler is low, and the leakage stoppage effect of the tube bundle is poor.
Disclosure of Invention
The application provides a leak hunting instrument of tube bank and tube bank leaking stoppage instrument can solve the definite precision of damaged tube bank among the air cooler lower, the relatively poor problem of leaking stoppage effect of tube bank. The technical scheme is as follows:
in one aspect, a tube bundle leak detection tool is provided, comprising: a center tube and a locking assembly;
the central tube comprises a head part and a middle part along the axial direction of the central tube, the head part is conical, and a step is protruded at the position, close to the middle part, of the outer side of the head part; the locking assembly is sleeved outside the central pipe, and the locking assembly is adjustable in position in the axial direction of the central pipe;
the head of center tube is used for penetrating the port of tube bank, the step is used for the joint the port of tube bank, the lock solid subassembly is used for the axial of center tube move to with the pipe case lock solid of being connected of port of tube bank.
Optionally, the outer side of the middle part of the central tube is provided with a plurality of annular locking grooves which are sequentially arranged along the axial direction, the annular locking grooves extend along the circumferential direction of the central tube, and the annular locking grooves are used for being clamped with a locking assembly which moves to the annular locking grooves so as to fix the locking assembly with the central tube.
Optionally, the locking assembly comprises: the steel ball drawing device comprises a drawing cylinder, a locking ring and a plurality of steel balls;
the pull cylinder is provided with a plurality of steel ball holes which are sequentially distributed along the circumferential direction of the pull cylinder, and the steel balls are respectively positioned in the steel ball holes; the locking ring is sleeved outside the pull cylinder and is used for covering the steel ball hole so as to apply pressure towards the inside of the pull cylinder to the steel ball in the steel ball hole;
under the extrusion of the locking ring, one end of the steel ball, which is far away from the locking ring, extends out of the steel ball hole and is clamped in the annular locking groove of the central tube.
Optionally, the steel ball hole has two opposite openings in the radial direction of the pull cylinder; among the two openings, the size of the opening close to the axis of the pull cylinder is smaller than the diameter of the steel ball, and the size of the opening far away from the axis of the pull cylinder is larger than or equal to the diameter of the steel ball.
Optionally, the locking assembly further comprises: an elastic element;
the elastic element is sleeved outside the pull cylinder, the lock ring is connected with the pull cylinder through the elastic element, and the elastic element can stretch along the axial direction of the pull cylinder; when the elastic element is in a first state, the lock ring covers the steel ball hole; when the elastic element is in the second state, the lock ring is staggered with the steel ball hole.
Optionally, the elastic element is a compression spring, a first protruding stop is arranged outside the pull cylinder, a second protruding stop is arranged inside the stop ring, and the elastic element is located between the first stop and the second stop;
when the elastic element is in a natural state, the second stopping platform covers the steel ball hole; and when the elastic element is in a compressed state, the second stopping table is staggered with the steel ball hole.
Optionally, a blocking surface of the second retaining platform, which is far away from the first retaining platform, is an inclined surface, and the blocking surface inclines towards a direction far away from the first retaining platform;
the blocking surface is used for blocking the steel balls in the steel ball holes from sliding out of the steel ball holes when the second blocking platform is staggered with the steel ball holes.
Optionally, the locking assembly further comprises: a clamp spring;
the pull cylinder is further provided with a clamp spring groove extending along the circumferential direction, the clamp spring groove is located on one side, away from the elastic element, of the blocking ring, the clamp spring is clamped in the clamp spring groove, and the clamp spring is used for blocking the blocking ring to move towards the direction away from the elastic element.
Optionally, the area of the outer part of the pulling cylinder, which is close to the head of the central tube, is provided with a screw thread, and the locking assembly is used for locking the tube box through the screw thread of the pulling cylinder.
Optionally, the tube bundle leak detection tool further comprises: a gasket;
the gasket is located the one side that the step of center tube was kept away from the middle part of center tube for the step passes through the gasket joint the port of tube bank.
In another aspect, a tube bundle leak stopping tool is provided, the tube bundle leak stopping tool comprising: a plug and a mounting rod;
the plug is in a circular truncated cone shape, a blind hole is formed in the target bottom surface of the plug, the head of the mounting rod is inserted into the blind hole to be connected with the plug, and the area of the target bottom surface is larger than that of the other bottom surface of the plug;
the mounting rod is used for bearing the plug so as to insert the plug into a port of the tube bundle; the plug is used for expanding connection with the end opening of the tube bundle.
Optionally, the head of the mounting rod is in threaded connection with the blind hole.
Optionally, the tail of the mounting rod has two parallel faces for gripping by a wrench to rotate the mounting rod.
The beneficial effect that technical scheme that this application provided brought includes at least:
in the tube bank maintenance instrument that this application provided, the head of center tube can penetrate the port of tube bank, and the lock solid subassembly that the center tube cup joints outward can move to lock solid with the case in the axial of center tube. So can all set up this tube bank leak detection instrument at the both ends of tube bank, the center tube through this tube bank leak detection instrument pours into liquid into to the tube bank into, and then observes this liquid and whether has the leakage, judges whether the tube bank exists the damage from this accurately. Therefore, the position of the damaged tube bundle in the air cooler can be accurately determined, the damaged tube bundle can be accurately plugged, and the plugging effect of the tube bundle in the air cooler is improved.
In addition, the locking assembly is adjustable in the axial position of the central pipe, so that the pipe bundle leakage detecting tool can be suitable for detecting the leakage of the pipe bundle in the air cooler with different pipe box sizes, and the applicability of the pipe bundle leakage detecting tool is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a tube bundle leak detection tool provided in an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a usage scenario of a tube bundle leak detection tool according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a center tube provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a locking assembly according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a pulling barrel provided in an embodiment of the present application;
FIG. 6 is a schematic diagram of another tube bundle leak detection tool provided in an embodiment of the present application;
FIG. 7 is a schematic structural diagram of a tube bundle plugging tool according to an embodiment of the present disclosure;
fig. 8 is a schematic view of a use scenario of a tube bundle plugging tool according to an embodiment of the present application;
fig. 9 is a partial structural schematic view of a tube box after plugging a tube bundle according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
At present, the use of air cooler is more and more extensive, and the air cooler includes many tube bundles, and this tube bundle can be the finned tube. The air cooler uses the ambient air as a cooling medium, so that the ambient air transversely sweeps across the fin tubes, and the high-temperature process fluid in the tube bundle is cooled or condensed. In order to achieve the purposes of compact structure and large heat exchange area, a plurality of tube bundles in the air cooler are generally densely arranged, the two ends of the air cooler are connected to the tube boxes, and the tube boxes are all welded. Because the tube bank is arranged densely and the pipe case is sealed in the air cooler, so in case the tube bank takes place to leak, can't accurately judge the position of the tube bank that takes place to leak through direct observation. In addition, even if a leaking tube bundle is found, the difficulty of plugging the leaking tube bundle is also high.
The embodiment of the application provides a tube bank leak hunting instrument and tube bank leaking stoppage instrument, can confirm the tube bank that takes place the leakage accurately, and carry out comparatively simple and easy leaking stoppage to this tube bank.
Fig. 1 is a schematic structural diagram of a tube bundle leak detection tool according to an embodiment of the present application. As shown in fig. 1, the tube bundle leak detection tool may include: a center tube 101 and a locking assembly 102. Wherein, along the axial direction of the center tube 101 (as in the x direction in fig. 1), the center tube 101 comprises a head portion B1 and a middle portion B2, the head portion B1 is tapered, and the size of the end of the head portion B1 far from the middle portion B2 is smaller than that of the end near the middle portion B2. The outer side of the head portion B1 near the middle portion B2 is raised with a step J, which may extend in the circumferential direction of the center tube 101 and surround the center tube 101. The locking assembly 102 may be sleeved outside the central pipe 101, and the locking assembly 102 is adjustable in position in the axial direction of the central pipe 101.
Fig. 2 is a schematic view of a usage scenario of a tube bundle leak detection tool according to an embodiment of the present application, and fig. 2 shows a structure of an air cooler. As shown in fig. 2, the air cooler 20 may include a plurality of tube bundles 201, a first tube box 202, and a second tube box 203, and both ends of the plurality of tube bundles 201 are connected to the first tube box 202 and the second tube box 203, respectively. Each of the first and second tube boxes 202 and 203 may have a plurality of openings in one-to-one correspondence with the plurality of tube bundles 201, each of which is sealed by a plug 206. The first tube box 202 has a blocking structure therein to divide the cavity of the first tube box 202 into two accommodating spaces, namely a first accommodating space Q1 and a second accommodating space Q2. The air cooler 20 further includes a medium inlet 204 and a medium outlet 205, the medium inlet 204 may communicate with the first receiving space Q1 of the first header tank 202, and the medium outlet 205 may communicate with the second receiving space Q2 of the first header tank 202. When the air cooler is in operation, that is, when the air cooler cools the fluid, the high-temperature fluid flows into the first accommodating space Q1 of the first tube box 202 from the medium inlet 204, flows into the second tube box 203 through the tube bundle 201 connected to the first accommodating space Q1, flows into the second accommodating space Q2 of the first tube box 202 through the tube bundle 201 connected to the second accommodating space Q2 of the second tube box 203 and the first tube box 202, and flows out from the medium outlet 205 communicated with the second accommodating space, so that the fluid flows through the air cooler.
Referring to fig. 1 and 2, the head B1 of the center tube 101 of the tube bundle leak detection tool 10 can penetrate into the port of the tube bundle 201, the step J protruding from the outside of the head B1 of the center tube 101 can be engaged with the port of the tube bundle 201, and the locking assembly 102 can move in the axial direction of the center tube 101 to lock the tube box connected to the port of the tube bundle 201. Optionally, the central tube 101 may further include a tail portion B3, and the head portion B1, the middle portion B2, and the tail portion B3 of the central tube 101 are arranged in this order in the axial direction of the central tube 101.
In leak detection of a certain tube bundle 201 using the tube bundle leak detection tool 10 provided in the embodiment of the present application, with continued reference to fig. 2, the tube bundle leak detection tool 10 may be inserted from an opening in the first tube box 202 corresponding to the tube bundle 201 and an opening in the second tube box 203 corresponding to the tube bundle 201. And the head of the central tube 101 of the tube bundle leak detection tool 10 is inserted into the port of the tube bundle 201, and the locking assembly 102 is locked with the tube box. A fluid (e.g., water) may then be injected from the end of the center tube 101 of the tube bundle leak detection tool 10 at one end of the tube bundle 201 to fill the tube bundle 201 and the center tube 101 of the tube bundle leak detection tool 10 at the other end of the tube bundle 201. And then observe whether the tube bundle 201 has fluid leakage or not, so as to determine whether the tube bundle 201 is damaged or not.
Alternatively, valves may be connected to the end portions of the central tubes 101 of two tube bundle leak detection tools 10 at the two ends of the tube bundle 201, for example, in the two tube bundle leak detection tools 10, the end portion of the central tube 101 of the tube bundle leak detection tool 10 for injecting fluid is connected with the inlet ball valve 103, and the end portion of the central tube 101 of the other tube bundle leak detection tool 10 is connected with the outlet ball valve 104. A pressure gauge 105 is also connected between the inlet ball valve 103 and the connected tube bundle leak detection tool 10. In leak detection of the tube bundle 201, water may be injected into the tube bundle 201 through the inlet ball valve 103 and exhausted through the outlet ball valve 104, and then the outlet ball valve 104 is closed, followed by closing the inlet ball valve 103. Whether the tube bundle 201 leaks or not is judged by observing whether the descending speed of the indication number of the pressure gauge 105 is higher than a speed threshold value or not and observing whether water leaks below the tube bundle 201 or not.
To sum up, among the tube bank maintenance instrument that this application provided, the head of center tube can penetrate the port of tube bank, and the lock solid subassembly that the center tube cup joints outward can move to locking with the pipe case in the axial of center tube. So can all set up this tube bank leak detection instrument at the both ends of tube bank, the center tube through this tube bank leak detection instrument pours into liquid into to the tube bank into, and then observes this liquid and whether have the leakage, judges from this whether damaged tube bank exists accurately. Therefore, the position of the damaged tube bundle in the air cooler can be accurately determined, the damaged tube bundle can be accurately plugged, and the plugging effect of the tube bundle in the air cooler is improved.
In addition, the locking assembly is adjustable in the axial position of the central pipe, so that the pipe bundle leakage detecting tool can be suitable for detecting the leakage of the pipe bundle in the air cooler with different pipe box sizes, and the applicability of the pipe bundle leakage detecting tool is improved.
Optionally, with continued reference to fig. 1, tube bundle leak detection tool 10 of the present embodiment may further include a gasket D. Gasket D may be located on the side of step J of center tube 101 away from middle B2 of center tube 101, such that step J snaps past the port of tube bundle 201 through gasket D. For example, the gasket D may have an annular shape, and the annular gasket D may be sleeved outside the head B1 of the central tube 101 and contact the step J. This gasket can be made by elastic material, so can guarantee that the head of center tube stretches into the port of tube bank when, the step on the center tube can extrude the gasket, makes the gasket deformation to guarantee the sealed of center tube and the port of tube bank.
Fig. 3 is a schematic structural diagram of a center tube provided in an embodiment of the present application. As shown in fig. 3, the outside of the middle portion B2 of the center tube 101 has a plurality of annular locking grooves C arranged in order in the axial direction, the annular locking grooves C extending in the circumferential direction of the center tube 101. Referring to fig. 1 and 3, the annular locking groove C is used to engage with the locking member 102 moving to the annular locking groove C, so as to fix the locking member 102 to the central tube 101. That is, when the locking assembly 102 moves to a certain annular locking groove C along the axial direction of the central tube 101, the locking assembly 102 can be clamped in the annular locking groove C, and further fixed with the central tube 101. Optionally, the depth of the annular locking groove in the embodiment of the present application may be smaller than the radius of the steel ball. Optionally, with continued reference to fig. 3, the tail B3 of the center tube 101 may also be threaded. The center tube 101 may be threaded with a valve (e.g., an inlet ball valve 103 or an outlet ball valve 104 in fig. 2).
Fig. 4 is a schematic structural diagram of a locking assembly according to an embodiment of the present disclosure. As shown in fig. 4, the locking assembly 102 may include: a pull barrel 1021, a locking ring 1022, and a plurality of steel balls 1023. Fig. 5 is a schematic structural diagram of a pulling barrel provided in an embodiment of the present application. Referring to fig. 4 and 5, the pull cylinder 1022 has a plurality of steel ball holes K sequentially arranged along the circumference of the pull cylinder 1022, and the steel balls 1023 are respectively located in the plurality of steel ball holes K. Optionally, one steel ball 1023 may be disposed in each steel ball hole K, or a plurality of steel balls may be disposed in each steel ball hole, which is not limited in the embodiment of the present application. Optionally, the sizes of the plurality of steel bead holes may be the same, and the distances between any two adjacent steel bead holes in the plurality of steel bead holes may be equal.
With continued reference to fig. 5, the ball hole K has two opposite openings in the radial direction of the pull cylinder 1021. Of the two openings, the size of the opening close to the axis of the pull cylinder 1021 is smaller than the diameter of the steel ball 1023, and the size of the opening far away from the axis of the pull cylinder 1021 is larger than or equal to the diameter of the steel ball 1023. So can guarantee when steel ball 1023 is located steel ball hole K, this steel ball 1023 can not fall out from the opening that steel ball hole K is close to the axis of slide 1021. Optionally, the two openings of the steel ball hole K may also have the same size, for example, both are greater than or equal to the diameter of the steel ball 1023, in this way, the preparation of the steel ball hole is simpler, and the embodiment of the present application is not limited.
Alternatively, the area of the outer portion of the pulling barrel 1021 near the head portion B1 of the center tube 1021 may have threads, through which the pulling barrel 1021 may be screwed to an opening on the tube box, so as to lock the tube box of the locking assembly 102. Optionally, the outer portion of the pulling barrel 1021 may also have a raised first stop T1, and the first stop T1 may be located between the thread and the ball hole K. The first block T1 may extend along the circumference of the pulling barrel 1021 and surround the pulling barrel 1021. Alternatively, the outer edge of the first stopper T1 may have a hexagonal shape, and the cross-section of the first stopper T1 may have a hexagonal shape as viewed from the right of the drawing drum shown in fig. 4. The staff can operate to the slide can through keeping off the platform to operate first, if can be through twisting first fender platform in order to twist the slide. Optionally, the outer portion of the pulling barrel 1021 also has a circumferentially extending snap spring groove H, which may be located on a side of the steel ball hole K away from the first stopper T1.
Referring to fig. 1 and 4, in the locking assembly 102, the locking ring 1022 is sleeved outside the pull cylinder 1021, and the locking ring 1022 is used for covering the steel ball hole K to apply a pressure towards the inside of the pull cylinder 1021 to the steel ball 1023 in the steel ball hole K. Under the pressing of the locking ring 1022, one end of the steel ball 1023 far away from the locking ring 1022 can extend out of the steel ball hole K and be clamped in the annular locking groove C of the central tube 101.
With continued reference to fig. 4, the locking assembly 102 may further include a resilient member 1024. The elastic element 1024 is sleeved outside the pull cylinder 1021, the lock ring 1022 can be connected with the pull cylinder 1021 through the elastic element 1024, and the elastic element 1024 can stretch and retract along the axial direction of the pull cylinder 1021. As shown in fig. 1, the resilient member 1024 is in a first state, in which the locking ring 1022 may cover the ball hole K. Fig. 6 is a schematic structural view of another tube bundle leak detection tool according to an embodiment of the present application, where, as shown in fig. 6, the elastic element 1024 is in a second state, and the locking ring 1022 may be misaligned with the steel ball hole K. Alternatively, the resilient member 1024 may be a compression spring. The first state of the compression spring may be its natural state and the first state of the compression spring may be its compressed state.
Referring to fig. 1, fig. 3, fig. 4 and fig. 6, the pull barrel 1021 may have a first protruded stop T1 on the outer portion thereof, a second protruded stop T2 on the inner portion of the stop ring 1022, and the elastic element 1024 may be located between the first stop T1 and the second stop T2. As shown in fig. 1, the second stop T2 of the locking ring 1022 covers the ball hole K when the resilient member 1024 is in the natural state. As shown in FIG. 6, when the resilient member 1024 is in a compressed state, the second stop T2 of the locking ring 1022 is misaligned with the steel ball hole K. Optionally, the locking assembly in the embodiment of the present application may not include the elastic element, and the locking ring and the pull cylinder may also be connected in a clamping manner, which is not limited in the embodiment of the present application.
With continued reference to fig. 4 and 6, the blocking surface M of the second stop T2 of the locking ring 1022 away from the first stop T1 in the embodiments of the present application may be a sloped surface that may slope away from the first stop. The blocking surface M can block the steel balls 1023 in the steel ball holes K to slide out of the steel ball holes K when the second blocking platform T2 is staggered with the steel ball holes K. For example, when the second stopper T2 is offset from the steel ball hole K, the maximum distance d between the blocking surface M and the end of the steel ball hole K far from the first stopper T1 may be smaller than the diameter of the steel ball 1023, so as to ensure that the steel ball 1023 cannot slide out of the steel ball hole K under the blocking of the blocking surface M.
With continued reference to fig. 4, the locking assembly 102 may further include: a snap spring 1025. The latch spring 1025 can be engaged in the latch spring groove H of the pull cylinder 1021, and the latch spring 1025 can be used to block the second stop T2 of the stop ring 1022 from moving away from the first stop T1 of the pull cylinder 1021, so as to block the stop ring 1022 from moving away from the elastic element 1024. The retaining spring 1025 can limit the position of the retaining ring 1022, such that the retaining ring 1022 only moves between the first stop T1 of the pull sleeve 1021 and the retaining spring 1025.
The following describes how to assemble the bundle leak detection tool provided in the embodiments of the present application. Illustratively, a center tube, a pull sleeve, an elastic member, a locking ring, a steel ball, and a snap spring may be provided. In one mode of assembly, the size of the opening of the steel ball hole in the pull cylinder close to the inner part of the pull cylinder is smaller than the diameter of the steel ball. The staff can overlap the slide from the afterbody of center tube outside the center tube earlier, can place a steel ball in every steel ball hole of slide after that, again with elastic element and catch cover outside the slide from the jump ring groove place side of slide in proper order, later with the jump ring joint to the jump ring inslot of slide, so can accomplish the equipment of tube bank leak hunting instrument.
In another assembly mode, the sizes of two openings of the steel ball hole in the pull cylinder are both larger than or equal to the diameter of the steel ball. The staff can overlap outside the slide in proper order with elastic element and catch from the jump ring groove place side of slide earlier, then with the jump ring joint to the jump ring inslot of slide, so with slide, elastic element, catch and jump ring initial assembly first subassembly. The first component can be sleeved at the tail part of the central tube, the side, where the screw thread of the pull cylinder is located, of the first component faces the head part of the central tube, the steel ball hole of the pull cylinder is located outside the tail part of the central tube, and the steel ball hole is not covered by the central tube. The locking ring in the first assembly may then be pushed toward the head of the center tube to compress the resilient element to misalign the locking ring with the steel ball holes of the pull cup, thereby placing a steel ball into each of the steel ball holes from the interior of the pull cup. And the assembly of the locking assembly is completed after the steel balls are placed. And then the locking assembly is pushed towards the head of the central tube, so that the locking assembly is completely sleeved outside the central tube, and the steel ball cannot slide out of the steel ball hole, so that the assembly of the tube bundle leak detection tool can be completed.
The fixing manner of the tube bundle leak detection tool and the air cooler provided by the embodiment of the application is described below.
For example, assuming that a target tube bundle in the air cooler needs to be subjected to leak detection, a worker may first remove a plug disposed at an opening corresponding to the target tube bundle in a tube box of the air cooler. The head of the center tube of the tube bundle leak detection tool is then aligned with the opening and pushed into the tube box until the center tube can no longer proceed, at which point it can be determined that the head of the center tube has been inserted into the port of the target tube bundle. The locking ring in the locking assembly of the tube bundle leak detection apparatus may then be pushed toward the tube box to move the locking assembly axially of the center tube until the forwardmost end of the pull sleeve in the locking assembly reaches the opening of the tube box. And then, the tube bundle leak detection tool can be pulled out of the tube box for a certain distance, the locking assembly is pushed towards the tube box for a target distance, the positions of the locking assembly and the central tube are not changed, and then the tube bundle leak detection tool is integrally pushed into the tube box until the front end of the locking assembly reaches the opening of the tube box. And finally, screwing the locking assembly through a first stop block on the pull cylinder in the locking assembly to enable the pull cylinder to be in threaded connection with the opening of the tube box until the locking assembly cannot be screwed any more, inserting the head of the central tube into the port of the target tube bundle, and completing locking of the locking assembly and the opening of the tube box.
It should be noted that the target distance is smaller than or equal to the width of the screw thread at the front end in the axial direction of the pulling barrel. So can guarantee with the locking subassembly promote the target distance again after, the head of the center tube of the leak detection instrument of finally fixed tube bank can stretch into the port of target tube bank. Optionally, the target distance may be a distance between 1 to 3 annular locking grooves.
It should be noted that, when the locking ring is pushed toward the tube box, the elastic element in the locking assembly is in a compressed state, the locking ring is staggered with the steel ball hole in the pull cylinder, the upper end of the steel ball in the steel ball hole (i.e., the end far away from the central tube) can protrude out of the steel ball hole and is blocked by the blocking surface of the locking ring, and then the locking assembly can move on the central tube. When the locking assembly moves to the position of a certain annular locking groove on the central tube, the steel balls can fall into the annular locking groove. At the moment, the locking assembly is continuously pushed, and because the depth of the annular locking groove can be smaller than the diameter of the steel ball, the steel ball can move out of the annular locking groove under the action of the pushing force and continuously move in the axial direction of the central tube until the locking assembly is stopped being pushed.
Optionally, in the embodiment of the present application, the locking assembly in the tube bundle leak detection tool may be moved to a position closer to the head in the central tube. And then inserting the tube bundle leak detection tool into a tube box of the air cooler, and connecting the locking assembly with the opening of the tube box in a threaded manner. And then, pushing a locking ring in the locking assembly to enable the locking assembly and the central pipe to be in a state of adjustable relative positions, and then pushing the central pipe towards the pipe box until the central pipe can not advance any more, so that the fixation of the pipe bundle leakage detection tool and the air cooler is completed.
Through foretell fixed mode, can guarantee to the pipe case of the different degree of depth of air cooler, only need adjust the lock solid subassembly to suitable position in a flexible way, again with the pipe bundle leak detection instrument arrange the lock die state in can, can guarantee all to realize the accurate installation of pipe bundle leak detection instrument to the pipe case of the different degree of depth.
In the embodiment of the application, a certain search process can be performed first to determine a target tube bundle with possible leakage, and then the tube bundle leakage detection tool provided by the embodiment of the application is used for further and accurately detecting the leakage of the target tube bundle. For example, in the searching process, the liquid may be injected into the first accommodating space of the first channel box of the air cooler in a time-sharing manner, and when it is determined that the liquid level of the injected liquid covers only the first layer of the tube bundle in the air cooler, that is, the bottom layer of the tube bundle in fig. 2, the pressure is applied to the tube bundle. And then checking the liquid dropping position outside the air cooler. If the liquid drop location is below two or three tube bundles, then the two or three tube bundles in the first layer of tube bundles are all identified as target tube bundles that may be damaged. And then blocking two ends of the target tube bundle, and continuously injecting liquid into the first accommodating space of the first tube box until the liquid covers the second layer of tube bundle, and pressurizing the tube bundle again. And then checking the liquid dropping position outside the air cooler again. And determining a target tube bundle in the second layer of tube bundles according to the liquid dropping position. The operation is performed a plurality of times in this manner until the target tube bundle among all the layer tube bundles is determined.
To sum up, among the tube bank maintenance instrument that this application provided, the head of center tube can penetrate the port of tube bank, and the lock solid subassembly that the center tube cup joints outward can move to locking with the pipe case in the axial of center tube. So can all set up this tube bank leak detection instrument at the both ends of tube bank, the center tube through this tube bank leak detection instrument pours into liquid into to the tube bank into, and then observes this liquid and whether have the leakage, judges from this whether damaged tube bank exists accurately. Consequently, can accurately confirm the position of damaged tube bank in the air cooler, and then can carry out accurate leaking stoppage to damaged tube bank, improve the leaking stoppage effect of tube bank in the air cooler.
In addition, the locking assembly is adjustable in the axial position of the central pipe, so that the pipe bundle leakage detecting tool can be suitable for detecting the leakage of the pipe bundle in the air cooler with different pipe box sizes, and the applicability of the pipe bundle leakage detecting tool is improved.
Fig. 7 is a schematic structural diagram of a tube bundle plugging tool according to an embodiment of the present application. As shown in fig. 7, the tube bundle plugging tool 70 includes: a plug 701 and a mounting rod 702. The plug 701 may have a circular truncated cone shape, and a target bottom surface of the plug 701, into which the head of the mounting rod 702 is inserted to be connected to the plug 701, has a blind hole L having an area larger than that of the other bottom surface of the plug 701.
Optionally, the blind hole L of the plug 701 may have threads therein, and the head of the mounting rod 702 may also have threads therein, and the head of the mounting rod 702 may be screwed into the blind hole L. Optionally, in this embodiment, the material of the plug 701 may be selected from brass, teflon, or carbon steel based on the working medium and the pressure used. Alternatively, mounting post 702 may be generally cylindrical in shape, and the tail of mounting post 702 may have two parallel faces that may be used for gripping by a wrench to rotate mounting post 702. Alternatively, the two parallel surfaces may be formed by machine milling at one end of the cylindrical material.
Fig. 8 is a schematic view of a use scenario of the tube bundle plugging tool according to the embodiment of the present application, and fig. 9 is a schematic view of a partial structure of a tube box after performing tube bundle plugging according to the embodiment of the present application. As shown in fig. 8, the mounting rod 702 may carry a plug 701 for inserting the plug 701 through the tube box into the port of the tube bundle 201, the plug 701 being expandable with the port of the tube bundle 201. Illustratively, after the installation rod 702 inserts the plug 701 into the port of the tube bundle 201, a worker may use a knocking tool to knock the tail of the installation rod 702, so as to expand the plug 701 into contact with the port of the tube bundle 201, thereby ensuring that the plug 701 is in close contact with the port of the tube bundle 201. Then, the worker may use a wrench to clamp the two parallel surfaces at the tail of the installation rod 702, rotate the installation rod 702 to separate the plug 701 from the installation rod 702, take the installation rod out of the tube box, and then reinstall the plug 206 at the opening of the tube box, so as to obtain the tube box shown in fig. 9. It should be noted that, for the tube bundle that needs to be plugged, both ends of the tube bundle need to be plugged by plugs.
To sum up, the tube bundle leaking stoppage tool provided by the embodiment of the application can simply insert the plug into the port of the tube bundle through the installation rod, and the plug can be in expanded joint with the port of the tube bundle, so that the leaking stoppage effect on the tube bundle is better, and the leaking stoppage process is simpler. And after leaking stoppage is carried out on a certain tube bundle, only a plug with a small size is left in the tube box, so that the influence on the original structure of the air cooler is small after leaking stoppage is carried out on the tube bundle.
It should be noted that in the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise. "substantially" means within an acceptable error range, that a person skilled in the art will be able to solve the technical problem within a certain error range, substantially to achieve the technical result. In the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. Like reference numerals refer to like elements throughout.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (13)
1. A tube bundle leak detection tool, comprising: a center tube and a locking assembly;
the central tube comprises a head part and a middle part along the axial direction of the central tube, the head part is conical, and a step is protruded at the position, close to the middle part, of the outer side of the head part; the locking assembly is sleeved outside the central pipe, and the locking assembly is adjustable in position in the axial direction of the central pipe;
the head of center tube is used for penetrating the port of tube bank, the step is used for the joint the port of tube bank, the lock solid subassembly is used for the axial of center tube move to with the pipe case lock solid of being connected of port of tube bank.
2. The tube bundle leak detection tool according to claim 1, wherein a plurality of annular locking grooves are sequentially arranged in the axial direction on the outer side of the middle part of the central tube, the annular locking grooves extend along the circumferential direction of the central tube, and the annular locking grooves are used for being clamped with a locking assembly moving to the annular locking grooves so as to fix the locking assembly with the central tube.
3. The tube bundle leak detection tool of claim 2, wherein the locking assembly comprises: the steel ball drawing device comprises a pull cylinder, a locking ring and a plurality of steel balls;
the pull cylinder is provided with a plurality of steel ball holes which are sequentially distributed along the circumferential direction of the pull cylinder, and the steel balls are respectively positioned in the steel ball holes; the locking ring is sleeved outside the pull cylinder and is used for covering the steel ball hole so as to apply pressure towards the inside of the pull cylinder to the steel ball in the steel ball hole;
under the extrusion of the locking ring, one end of the steel ball, which is far away from the locking ring, extends out of the steel ball hole and is clamped in the annular locking groove of the central tube.
4. The tube bundle leak detection tool according to claim 3, wherein the steel bead hole has two opposite openings in a radial direction of the pulling cylinder; among the two openings, the size of the opening close to the axis of the pull cylinder is smaller than the diameter of the steel ball, and the size of the opening far away from the axis of the pull cylinder is larger than or equal to the diameter of the steel ball.
5. The tube bundle leak detection tool according to claim 3 or 4, wherein the locking assembly further comprises: an elastic element;
the elastic element is sleeved outside the pull cylinder, the lock ring is connected with the pull cylinder through the elastic element, and the elastic element can stretch along the axial direction of the pull cylinder; when the elastic element is in a first state, the lock ring covers the steel ball hole; when the elastic element is in the second state, the lock ring is staggered with the steel ball hole.
6. The tube bundle leak detection tool according to claim 5, wherein the resilient member is a compression spring, the pull cup has a raised first stop on an exterior thereof, the retainer ring has a raised second stop on an interior thereof, and the resilient member is located between the first stop and the second stop;
when the elastic element is in a natural state, the second stopping platform covers the steel ball hole; and when the elastic element is in a compressed state, the second stopping table is staggered with the steel ball hole.
7. The tube bundle leak detection tool of claim 6, wherein a blocking surface of the second stop remote from the first stop is a sloped surface, the blocking surface sloping away from the first stop;
the blocking surface is used for blocking the steel balls in the steel ball holes from sliding out of the steel ball holes when the second blocking platform is staggered with the steel ball holes.
8. The tube bundle leak detection tool of claim 5, wherein the locking assembly further comprises: a clamp spring;
the pull cylinder is further provided with a clamp spring groove extending along the circumferential direction, the clamp spring groove is located on one side, away from the elastic element, of the stop ring, the clamp spring is clamped in the clamp spring groove, and the clamp spring is used for blocking the stop ring to move towards the direction away from the elastic element.
9. The tube bundle leak detection tool according to claim 3 or 4, wherein a region outside the pulling cylinder near the head of the center tube has a screw thread, and the locking assembly is configured to be locked with the tube box by the screw thread of the pulling cylinder.
10. The tube bundle leak detection tool according to any one of claims 1 to 4, further comprising: a gasket;
the gasket is located the one side that the step of center tube was kept away from the middle part of center tube for the step passes through the gasket joint the port of tube bank.
11. A tube bundle leak stoppage tool, comprising: a plug and a mounting rod;
the plug is in a circular truncated cone shape, a blind hole is formed in the target bottom surface of the plug, the head of the mounting rod is inserted into the blind hole to be connected with the plug, and the area of the target bottom surface is larger than that of the other bottom surface of the plug;
the mounting rod is used for bearing the plug so as to insert the plug into a port of the tube bundle; the plug is used for expanding connection with the end opening of the tube bundle.
12. The tube bundle lost circulation tool of claim 11, wherein the head of the mounting rod is threaded into the blind hole.
13. The tube bundle lost circulation tool of claim 11, wherein the tail of the mounting rod has two parallel faces for gripping by a wrench to rotate the mounting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431591.XA CN114593873A (en) | 2020-12-07 | 2020-12-07 | Tube bundle leakage detection tool and tube bundle leakage blocking tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011431591.XA CN114593873A (en) | 2020-12-07 | 2020-12-07 | Tube bundle leakage detection tool and tube bundle leakage blocking tool |
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| Publication Number | Publication Date |
|---|---|
| CN114593873A true CN114593873A (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011431591.XA Pending CN114593873A (en) | 2020-12-07 | 2020-12-07 | Tube bundle leakage detection tool and tube bundle leakage blocking tool |
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| CN (1) | CN114593873A (en) |
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| CN200943800Y (en) * | 2006-09-04 | 2007-09-05 | 刘兴山 | Plugging tool for tube bundle leakage |
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