CN214010701U - Pressure test tool for floating head heat exchanger - Google Patents

Abstract

The application relates to a float head heat exchanger pressure testing frock, it relates to an auxiliary device of heat exchanger, and it is including supplying the clamping ring that the float head tube sheet stretched into, be equipped with the spacing ring with barrel flange joint on the clamping ring, spacing ring and barrel flange pass through the connecting piece and connect, the clamping ring passes through the atmospheric pressure subassembly with the float head tube sheet and connects. The floating heat exchanger has the advantages that the floating head tube plates with different lengths can be adapted to, and the floating heat exchanger is suitable for floating heat exchangers with different models.

Description

Pressure test tool for floating head heat exchanger

Technical Field

The application relates to an auxiliary device of a heat exchanger, in particular to a pressure test tool of a floating head heat exchanger.

Background

The heat exchanger is a device for transferring partial heat of hot fluid to cold fluid, and plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, and is divided into a floating head heat exchanger, a plate heat exchanger and the like. The floating head type heat exchanger comprises a cylinder and a plurality of heat exchange tubes arranged in the cylinder, wherein one end of each heat exchange tube is provided with a tube plate which is fixedly connected with the cylinder, the other end of each heat exchange tube freely moves relative to the cylinder and is called a floating head, and the floating head consists of a floating head tube plate, a hook ring and a floating head end cover; the two ends of the cylinder are connected with the tube box, the cylinder is connected with the tube box through a cylinder flange, and the floating head tube plate extends out of the cylinder and extends into the tube box.

In order to prevent mutual circulation between cold fluid between the heat exchange tube and the cylinder and hot fluid in the heat exchange tube, the welding quality requirement between the heat exchange tube and the floating head tube plate is high, once the welding is not completed, the mutual circulation between the hot fluid and the cold fluid is caused, and therefore the leakage test is required to be specially performed on the welding position between the floating head tube plate and the heat exchange tube in the production process.

At present, referring to fig. 1 and 2, a relatively large number of pressure test tools are used, and each pressure test tool comprises a connecting ring 04 into which a floating head tube plate 03 extends, a connecting flange 06 connected with a barrel flange 05 is arranged on the connecting ring 04, and a fixing ring 07 is arranged on one side of the connecting ring 04 away from the connecting flange 06; the floating head tube plate 03 is inserted into the cover ring 08, a limiting ring 09 is arranged on one side, away from the connecting ring 04, of the cover ring 08, and a plurality of connecting bolts 010 connected with the fixing ring 07 are arranged on the limiting ring 09; when the floating head tube plate 03 is installed, the connecting flange 06 is connected with the cylinder flange 05, the floating tube plate 03 extends into the connecting ring 04, one part of the floating tube plate 03 is located in the connecting ring 04, the other part of the floating tube plate 03 extends out of the connecting ring 04, the filling rope 011 is wound on the floating tube plate 03 extending out of the connecting ring 04, the cover ring 08 is sleeved on the floating tube plate 03, the filling rope 011 is extruded at the same time, the fixing ring 07 is connected with the limiting ring 09 through the connecting bolt 010, and then pressure test and leak detection are conducted on the floating head tube plate 03.

In view of the related art in the above, the inventors consider that there are drawbacks in that: when the tool is used, because the heat exchangers of different models have different lengths of the floating head tube plate exceeding the cylinder, the filling ropes are easily caused to be incapable of being wound on the floating head tube plate, and the floating head tube plate is prevented from being subjected to pressure test and leakage detection.

Disclosure of Invention

In order to improve the problem that the pressure testing frock can't detect the floating head tube sheet that surpasss different length, this application provides a floating head heat exchanger pressure testing frock.

The application provides a pair of pressure testing tool for floating head heat exchanger adopts following technical scheme:

the utility model provides a pressure testing tool for floating head heat exchanger, includes the clamping ring that supplies the floating head tube sheet to stretch into, be equipped with the spacing ring with barrel flange joint on the clamping ring, spacing ring and barrel flange pass through the connecting piece and connect, the clamping ring passes through the atmospheric pressure subassembly with the floating head tube sheet and connects.

Through adopting above-mentioned technical scheme, when detecting, at first with the connecting collar cover in the floating head tube sheet outside, utilize the connecting piece with spacing ring and barrel flange joint, utilize the atmospheric pressure subassembly to float head tube sheet and connecting collar connection to this can adapt to and surpass the floating head tube sheet of different length, is favorable to adapting to the heat exchanger that floats of different models.

Optionally, a plurality of air pressure ring grooves are formed in the inner side wall of the connecting ring, and are uniformly distributed along the axial direction of the connecting ring;

the pneumatic assembly comprises a plurality of inflation pipe nozzles arranged on the outer side wall of the connecting ring, the inflation pipe nozzles are communicated with the pneumatic ring groove, an inflation rubber ring is arranged in the pneumatic ring groove, and the inflation rubber ring is abutted against the peripheral wall of the floating head tube plate.

By adopting the technical scheme, when the tool is installed, the inflatable rubber ring is installed in the corresponding air pressure ring groove according to the length of the floating head tube plate extending into the connecting ring, then the floating head tube plate extends into the connecting ring, the inflatable nozzle is inflated after the limiting ring is connected with the barrel flange, and the inflatable rubber ring is inflated to expand and is abutted against the outer peripheral wall of the floating head tube plate, so that the floating head tube plate can be sealed, the tool can adapt to the floating head tube plates with different lengths exceeding the barrel, and the universality of the tool is improved; and the inflatable rubber ring can be repeatedly used, so that a filler rope which can be used only once is replaced, and the cost is reduced.

Optionally, a plurality of the inflating nozzles are spirally and uniformly distributed.

Through adopting above-mentioned technical scheme, utilize to be the inflating mouthpiece of spiral equipartition, stagger each other between the inflating mouthpiece, the convenience is aerifyd the inflating mouthpiece.

Optionally, an auxiliary ring plate abutting against the inflatable rubber ring is arranged in the connecting ring, the auxiliary ring plate is positioned on one side, away from the cylinder flange, of the floating head tube plate, and a rubber gasket is arranged between the auxiliary ring plate and the floating head tube plate;

the utility model discloses a pneumatic ring plate, including supplementary crown plate, slider, slide groove, auxiliary ring plate, screw rod, slide groove, slide rod one end, slide rod and auxiliary ring plate, on the perisporium of auxiliary ring plate and along the circumference equipartition of self a plurality of groove that slides, it is connected with the screw rod to rotate on the end wall of auxiliary ring plate, the axis of screw rod is parallel with the axis of auxiliary ring plate, the screw rod penetrates the slide groove and rotates with the slide groove to be connected, threaded connection has the slider on the screw rod, it is connected with the inserted bar to slide on the slider, inserted bar one end is passed the slider and is inserted in the atmospheric pressure annular, and the other end stretches out the slider and is equipped with the gag lever post, be equipped with spacing spring between gag lever post and the auxiliary ring plate.

Through adopting above-mentioned technical scheme, because long-term use floats first tube sheet in-process, it receives the corruption of liquid to float the first tube sheet, the periphery wall that floats the first tube sheet produces the hole easily, it aerifys the unable hole of filling after the rubber circle to aerify this moment, when examining, it reveals to float the first tube sheet and take place easily, so install the rubber packing ring earlier in the connecting ring, install the rubber circle of aerifing of contradicting with supplementary crown plate in the atmospheric pressure annular, put into the connecting ring with supplementary crown plate again, extrude the rubber packing ring, and rotate the screw rod, it removes to drive the slider, insert the inserted bar in the atmospheric pressure annular, thereby can fix supplementary crown plate, aerify the rubber circle again, aerify the rubber circle and contradict with supplementary crown plate, thereby can seal once more the first tube sheet that floats, with this possibility that can reduce to take place to reveal.

Optionally, the internal perisporium of supplementary crown plate is gone up and is located the both sides in the groove of sliding and all be equipped with the spout, the cunning is connected with the backup pad in the spout, one side that the gag lever post is close to supplementary crown plate is equipped with the breach that supplies the backup pad to stretch into.

By adopting the technical scheme, when the auxiliary ring plate is installed, the supporting plate slides into the sliding groove and is inserted into the notch, the limiting spring is stretched, after the auxiliary ring plate is installed, the supporting plate is moved away, the limiting spring is reset, and the inserting rod is inserted into the air pressure ring groove, so that the installation convenience is improved.

Optionally, the connecting piece includes a plurality of connecting rod with barrel flange joint, it is equipped with the briquetting of contradicting with the spacing ring to slide on the connecting rod, the one end threaded connection that the connecting rod passed the briquetting has lock nut.

Through adopting above-mentioned technical scheme, when the installation, at first with connecting rod and barrel flange threaded connection, conflict spacing ring and barrel flange again, conflict the briquetting on the spacing ring again, lock nut screws at last, can install the clamping ring on the barrel to this heat exchanger that floats that can adapt to the model.

Optionally, a plurality of positioning holes are formed in the circumferential wall of the limiting ring along the circumferential direction of the limiting ring;

the connecting piece comprises a fixing block inserted into the positioning hole, a positioning rod inserted into the positioning hole and inserted into the fixing block is arranged on the side wall of the limiting ring, and a fixing nut is connected to the positioning rod in a threaded manner;

the one end that the locating hole was stretched out to the fixed block is equipped with the extension rod, the pot head that the spacing ring was kept away from to the extension rod is equipped with the clamp splice, the clamp splice is located the both sides of barrel flange respectively with the spacing ring, one side threaded connection that the extension rod passed the clamp splice has the nut of screwing.

By adopting the technical scheme, when the device is installed, the fixing block is inserted into the positioning hole, the positioning rod is inserted into the positioning hole and the inserting rod, the fixing nut is screwed, the clamping block is sleeved on the extension rod, and finally the screwing nut is screwed, so that the limiting ring and the barrel body can be connected through the flange.

Optionally, the fixed block is provided with a plurality of insertion holes for inserting the positioning rods, and the insertion holes are uniformly distributed along the axial direction of the positioning holes.

Through adopting above-mentioned technical scheme, utilize the locating lever to insert in the jack of difference, thereby the fixed block can stretch out different length to this barrel flange that can adapt to different external diameters, with this floating head heat exchanger that can adapt to different models.

Optionally, the connecting piece includes a plurality of butt plate of contradicting with the barrel flange, the articulated installation pole that is connected with on the butt plate, the thickness direction setting of barrel flange is followed to the installation pole, the cover that slides on the installation pole is equipped with the baffle, the baffle is located the one side that the barrel flange was kept away from to the spacing ring, the one end threaded connection that the installation pole passed the baffle has set nut.

Through adopting above-mentioned technical scheme, when the installation, utilize butt plate and barrel flange to contradict, rotate the installation pole, with the baffle cover on the installation pole, screw set nut again to this can convenient and fast with barrel flange and spacing ring connection.

Optionally, a plurality of anti-slip bumps are arranged on the abutting plate and the opposite side walls of the baffle.

Through adopting above-mentioned technical scheme, utilize skid proof convex block to contradict with butt joint board and barrel flange, be favorable to improving butt joint board and barrel flange joint's stability.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the floating head heat exchanger is installed, the floating head tube plate is sleeved in the connecting ring, the limiting ring is connected with the cylinder flange through the connecting piece, and the floating head tube plate is connected with the connecting ring through the air pressure assembly, so that the floating head heat exchanger can adapt to different types of floating head heat exchangers;

2. the adjacent inflating nozzle orifices are staggered, so that the inflating nozzle orifices can be conveniently inflated;

3. utilize the backup pad to support the gag lever post, stretch spacing spring to this auxiliary ring board that can easy to assemble.

Drawings

Fig. 1 is a schematic structural diagram of a pressure test tool in the background art.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic structural diagram of a pressure test tool for a floating head heat exchanger in embodiment 1 of the present application.

Fig. 4 is a sectional view taken along line B-B in fig. 3.

Fig. 5 is a schematic structural diagram of a pressure test tool for a floating head heat exchanger in embodiment 2 of the present application.

Fig. 6 is a sectional view taken along line C-C in fig. 5.

Fig. 7 is a schematic structural diagram of a pressure test tool for a floating head heat exchanger in embodiment 3 of the present application.

Fig. 8 is a schematic view showing an explosion structure between the fixing block and the barrel flange.

Fig. 9 is a schematic structural diagram of a pressure test tool for a floating head heat exchanger in embodiment 4 of the present application.

Fig. 10 is an enlarged view of a portion a in fig. 9.

Description of reference numerals: 01. a heat exchange pipe; 02. a barrel; 03. a floating head tube plate; 04. a connecting ring; 05. a cylinder flange; 06. a connecting flange; 07. a fixing ring; 08. a cover ring; 09. a limiting ring; 010. a connecting bolt; 011. a filler rope; 1. a connecting ring; 10. an air pressure ring groove; 11. an auxiliary ring plate; 12. a rubber gasket; 13. a sliding groove; 14. a screw; 15. a slider; 16. inserting a rod; 17. a limiting rod; 18. a limiting spring; 100. a chute; 101. a support plate; 102. a notch; 2. a limiting ring; 3. a connecting member; 30. a connecting rod; 31. briquetting; 32. locking the nut; 33. positioning holes; 34. a fixed block; 35. positioning a rod; 36. fixing a nut; 37. a clamping block; 38. screwing the nut; 39. a jack; 300. a butt joint plate; 301. mounting a rod; 302. a baffle plate; 303. positioning a nut; 304. an anti-slip bump; 305. an extension rod; 4. an air pressure assembly; 40. an inflation nozzle; 41. an inflatable rubber ring.

Detailed Description

The present application is described in further detail below with reference to figures 3-10.

The embodiment of the application discloses pressure testing tool for floating head heat exchanger.

Example 1

Referring to fig. 3 and 4, the pressure test tool for the floating head heat exchanger comprises a connecting ring 1, wherein the axis of the connecting ring 1 is collinear with the axis of a cylinder 02, a limiting ring 2 is arranged on the end wall of the connecting ring 1, the limiting ring 2 is connected with a cylinder flange 05 through a connecting piece 3, one side, far away from the cylinder flange 05, of a floating head tube plate 03 extends into the connecting ring 1, and the connecting ring 1 is connected with the floating head tube plate 03 through an air pressure assembly 4; before detecting, overlap the clamping ring 1 in the floating head tube sheet 03 outside earlier, utilize connecting piece 3 to be connected spacing ring 2 and barrel flange 05, recycle atmospheric pressure subassembly 4 and connect spacing ring 2 and floating head tube sheet 03 to this can adapt to the floating head tube sheet 03 that stretches out the different length of barrel 02, is favorable to adapting to the floating head heat exchanger of different models.

Referring to fig. 3 and 4, the connecting member 3 includes a plurality of connecting rods 30, one end of each connecting rod 30 is connected with the barrel flange 05, the other end of each connecting rod 30 extends towards one side of the limiting ring 2, the connecting rods 30 and the barrel flange 05 can be welded, a pressing block 31 is slidably arranged at one end of each connecting rod 30 close to the limiting ring 2, the pressing block 31 is abutted against the limiting ring 2, one end of each connecting rod 30 penetrating through the pressing block 31 is in threaded connection with a locking nut 32, and the locking nut 32 is abutted against the pressing block 31; during installation, firstly, the limiting ring 2 is abutted against the barrel flange 05, the pressing block 31 is sleeved on the connecting rod 30 and abutted against the limiting ring 2, and finally the locking nut 32 is screwed, so that the limiting ring 2 can be connected with the barrel flange 05; because of the floating head heat exchangers of different models, the number of holes on the cylinder flange 05 is different, the floating head heat exchangers are connected with the cylinder flange 05 through the connecting rod 30, the limiting ring 2 is fixed by the pressing block 31, and the connecting mode that the connecting rod 30 penetrates through the limiting ring 2 and the cylinder flange 05 at the same time is replaced, so that the floating head heat exchangers of different models can be adapted; and the inflatable rubber ring 41 can be reused to replace a filler rope which can be used only once, thereby being beneficial to reducing the cost.

Referring to fig. 3 and 4, a plurality of air pressure ring grooves 10 are formed in the inner side wall of the connecting ring 1, and the plurality of air pressure ring grooves 10 are uniformly distributed along the axial direction of the connecting ring 1.

Referring to fig. 3 and 4, the pneumatic assembly 4 comprises a plurality of inflation nozzles 40, the plurality of inflation nozzles 40 are uniformly distributed on the outer side wall of the connecting ring 1 in a spiral shape, and the inflation nozzles 40 are communicated with the pneumatic ring groove 10; the adjacent inflation nozzles 40 are staggered from each other to facilitate inflation.

Referring to fig. 3 and 4, an inflatable rubber ring 41 is arranged in the air pressure ring groove 10, the section of the inflatable rubber ring 41 is U-shaped, the opening of the inflatable rubber ring 41 faces the air pressure ring groove 10, and the inflatable rubber ring 41 is abutted against the peripheral wall of the floating head tube plate 03; according to floating head tube sheet 03 at the position of coupling ring 1, will aerify rubber circle 41 and put into corresponding atmospheric pressure annular 10, after spacing ring 2 is connected with barrel flange 05, aerify mouthpiece 40, aerify rubber circle 41 and aerify and swell and contradict with the periphery wall that floats head tube sheet 03, can seal floating head tube sheet 03 to this can adapt to the length that floats head tube sheet 03 and stretch into coupling ring 1, is favorable to adapting to the floating head heat exchanger of different models.

The implementation principle of the embodiment 1 is as follows: firstly, the floating head tube plate 03 extends into the connecting ring 1, the limiting ring 2 is connected with the barrel flange 05 through the connecting piece 3, then the connecting ring 1 and the floating head tube plate 03 are connected through the air pressure component 4, the floating head tube plate 03 with different lengths is adapted to, and the floating heat exchangers with different models are favorably adapted.

Example 2

Referring to fig. 5 and 6, the difference between this embodiment and embodiment 1 is that, as the floating head tube plate 03 is eroded by cold fluid for a long time, holes are likely to appear on the outer peripheral wall of the floating head tube plate 03, at this time, the inflatable rubber ring 41 is inflated and cannot enter the holes, and at this time, the sealing performance between the floating head tube plate 03 and the inflatable rubber ring 41 is reduced, so that a rubber gasket 12 is arranged on the side of the connecting ring 1 away from the floating head tube plate 03, an auxiliary ring plate 11 is arranged on the side of the rubber gasket 12 away from the connecting ring 1, and the auxiliary ring plate 11 is abutted against the inflatable rubber ring 41; the rubber gasket 12 is abutted against the auxiliary ring plate 11, so that the possibility of leakage between the auxiliary ring plate 11 and the floating head tube plate 03 is reduced.

Referring to fig. 5 and 6, a plurality of sliding grooves 13 are formed in the peripheral wall of the auxiliary ring plate 11, the sliding grooves 13 are uniformly distributed along the circumferential direction of the auxiliary ring plate 11, a screw 14 is rotatably connected to the end wall of the auxiliary ring plate 11, the axis of the screw 14 is parallel to the axis of the auxiliary ring plate 11, the screw 14 penetrates into the sliding groove 13 and is rotatably connected with the sliding groove 13, a slider 15 is connected to the screw 14 through a thread, the slider 15 is attached to the wall of the sliding groove 13, the moving track of the slider 15 is parallel to the axis of the auxiliary ring plate 11, an inserted rod 16 is slidably connected to the slider 15, the inserted rod 16 is arranged along the radial direction of the auxiliary ring plate 11, one end of the inserted rod 16 penetrates through the slider 15 and is inserted into the air pressure ring groove 10, the other end of the inserted rod extends out of the slider 15 and is provided with a limit rod 17, the axis of the limit rod 17 is perpendicular to the axis of the inserted rod 16, and a limit spring 18 is arranged between the limit rod 17 and the auxiliary ring plate 11.

Referring to fig. 5 and 6, sliding grooves 100 are formed in the inner peripheral wall of the auxiliary ring plate 11 and located on two sides of the sliding groove 13, the sliding grooves 100 are arranged along the radial direction of the auxiliary ring plate 11, a supporting plate 101 is connected to the sliding grooves 100 in a sliding manner, and a notch 102 for the supporting plate 101 to extend into is formed in one side, close to the auxiliary ring plate 11, of the limiting rod 17.

The implementation principle of the embodiment 2 is as follows: when the auxiliary ring plate is installed, the rubber gasket 12 is firstly attached to the floating head tube plate 03, the inflatable rubber ring 41 attached to the auxiliary ring plate 11 is installed in the air pressure ring groove 10, then the auxiliary ring plate 11 is attached to the rubber gasket 12 and extrudes the rubber gasket 12, the screw 14 is rotated to drive the sliding block 15 to move, so that the inserted rod 16 is driven to move, after the inserted rod 16 moves to the air pressure ring groove 10, the supporting plate 101 is loosened, the inserted rod 16 is inserted into the air pressure ring groove 10 through the limiting spring 18, the auxiliary ring plate 11 can be installed, the air pressure rubber ring is inflated, and the air pressure rubber ring is attached to the auxiliary ring plate 11, so that the floating head tube plate 03 can be sealed for the second time, and the possibility of leakage is reduced.

Example 3

Referring to fig. 7 and 8, the present embodiment is different from embodiment 1 in that a plurality of positioning holes 33 are provided on the circumferential wall of the stop collar 2, and the plurality of positioning holes 33 are uniformly distributed along the circumferential direction of the stop collar 2.

Referring to fig. 7 and 8, the connecting member 3 includes a fixing block 34, one end of the fixing block 34 is inserted into the positioning hole 33, the other end of the fixing block extends out of the positioning hole 33 and is provided with an extending rod 305, one end of the fixing block 34 extending into the positioning hole 33 is provided with a plurality of insertion holes 39, and the plurality of insertion holes 39 are uniformly distributed along the radial direction of the stop collar 2.

Referring to fig. 7 and 8, a positioning rod 35 inserted into the positioning hole 33 and the insertion hole 39 is provided on the side wall of the retainer ring 2, and a fixing nut 36 is screwed to the positioning rod 35.

Referring to fig. 7 and 8, one end of the extension rod 305 close to the cylinder flange 05 is slidably sleeved with a clamping block 37, the clamping block 37 and the limiting ring 2 are respectively located at two sides of the cylinder flange 05, one side of the extension rod 305 penetrating through the clamping block 37 is in threaded connection with a screwing nut 38, and the screwing nut 38 is abutted to the side wall of the cylinder flange 05.

The implementation principle of the embodiment 3 is as follows: during installation, the connecting ring 1 is sleeved on the floating head tube plate 03, the fixing block 34 is inserted into the positioning hole 33 by a proper length according to the outer diameter of the barrel flange 05, the positioning rod 35 is inserted into the positioning hole 33 and the insertion hole 39, the fixing nut 36 is screwed, the clamping block 37 is sleeved on the insertion rod 16, and the screwing nut 38 is screwed, so that the limiting ring 2 and the barrel flange 05 can be conveniently and quickly connected.

Example 4

Referring to fig. 9, this embodiment is different from embodiment 1 in that, connecting piece 3 includes a plurality of butt plate 300, a plurality of butt plate 300 is along the circumference equipartition of barrel flange 05, butt plate 300 contradicts with barrel flange 05 and sets up and is located barrel flange 05 and keeps away from one side of spacing ring 2, it has installation pole 301 to articulate on the butt plate 300, the axis of installation pole 301 is parallel with the axis of barrel flange 05, it is equipped with baffle 302 to slide on installation pole 301, baffle 302 contradicts with spacing ring 2 and sets up, baffle 302 is located one side that barrel flange 05 was kept away from to spacing ring 2, all be equipped with a plurality of skid proof block 304 on butt plate 300 and the relative lateral wall of baffle 302, one side threaded connection that installation pole 301 passed baffle 302 has set nut 303, set nut 303 contradicts with baffle 302 and sets up.

The implementation principle of the embodiment 4 is as follows: when the mounting process is carried out, the floating head tube plate 03 is firstly sleeved into the limiting ring 2, the limiting ring 2 is attached to the barrel flange 05, the abutting plate 300 is abutted to the side wall of the barrel flange 05, the mounting rod 301 is rotated, the baffle plate 302 is sleeved on the mounting rod 301, and the positioning nut 303 is screwed, so that the limiting ring 2 can be conveniently and quickly connected with the barrel flange 05.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a pressure testing frock of floating head heat exchanger which characterized in that: including supplying to float connecting ring (1) that first tube sheet (03) stretched into, be equipped with spacing ring (2) of being connected with barrel flange (05) on connecting ring (1), spacing ring (2) and barrel flange (05) are connected through connecting piece (3), connecting ring (1) and float first tube sheet (03) are connected through atmospheric pressure subassembly (4).

2. The pressure test tool for the floating head heat exchanger according to claim 1, which is characterized in that: a plurality of air pressure ring grooves (10) are formed in the inner side wall of the connecting ring (1), and the air pressure ring grooves (10) are uniformly distributed along the axial direction of the connecting ring (1);

the pneumatic component (4) is including setting up a plurality of on the connecting ring (1) lateral wall and aerifing nozzle (40), it sets up with pneumatic ring groove (10) intercommunication to aerify nozzle (40), be equipped with in pneumatic ring groove (10) and aerify rubber circle (41), it contradicts with floating head tube sheet (03) perisporium to aerify rubber circle (41).

3. The pressure test tool for the floating head heat exchanger according to claim 2, characterized in that: the plurality of inflating nozzles (40) are uniformly distributed in a spiral shape.

4. The pressure test tool for the floating head heat exchanger according to claim 1, which is characterized in that: an auxiliary ring plate (11) which is abutted against the inflatable rubber ring (41) is arranged in the connecting ring (1), the auxiliary ring plate (11) is positioned on one side, away from the cylinder flange (05), of the floating head tube plate (03), and a rubber gasket (12) is arranged between the auxiliary ring plate (11) and the floating head tube plate (03);

the utility model discloses a pneumatic ring, including supplementary crown plate (11), the circumference equipartition of just following self has a plurality of groove (13) that slides on the perisporium of supplementary crown plate (11), it is connected with screw rod (14) to rotate on the end wall of supplementary crown plate (11), the axis of screw rod (14) is parallel with the axis of supplementary crown plate (11), screw rod (14) penetrate in groove (13) that slides and rotate with groove (13) and be connected, threaded connection has slider (15) on screw rod (14), it is connected with inserted bar (16) to slide on slider (15), inserted bar (16) one end is passed slider (15) and is inserted in atmospheric pressure annular (10), and the other end stretches out slider (15) and is equipped with gag lever post (17), be equipped with spacing spring (18) between gag lever post (17) and supplementary crown plate (11).

5. The pressure test tool for the floating head heat exchanger according to claim 4, wherein: the utility model discloses a spacing structure, including supplementary crown plate (11), gag lever post (17), gag lever post (13) and gag lever post (11), the both sides that just are located sliding groove (13) on the internal perisporium of supplementary crown plate (11) all are equipped with spout (100), spout (100) internal slipping is connected with backup pad (101), one side that gag lever post (17) are close to supplementary crown plate (11) is equipped with breach (102) that confession backup pad (101) stretched into.

6. The pressure test tool for the floating head heat exchanger according to claim 1, which is characterized in that: connecting piece (3) include a plurality of connecting rod (30) be connected with barrel flange (05), connecting rod (30) are slided upward and are equipped with briquetting (31) of contradicting with spacing ring (2), one end threaded connection that connecting rod (30) passed briquetting (31) has lock nut (32).

7. The pressure test tool for the floating head heat exchanger according to claim 1, which is characterized in that: a plurality of positioning holes (33) are arranged on the peripheral wall of the limiting ring (2) along the circumferential direction of the limiting ring;

the connecting piece (3) comprises a fixing block (34) inserted into the positioning hole (33), a positioning rod (35) inserted into the positioning hole (33) and the fixing block (34) is arranged on the side wall of the limiting ring (2), and a fixing nut (36) is connected to the positioning rod (35) in a threaded manner;

the one end that locating hole (33) were stretched out in fixed block (34) is equipped with extension rod (305), the pot head that spacing ring (2) were kept away from in extension rod (305) is equipped with clamp splice (37), clamp splice (37) and spacing ring (2) are located the both sides of barrel flange (05) respectively, one side threaded connection that extension rod (305) passed clamp splice (37) has nut (38) of screwing.

8. The pressure test tool for the floating head heat exchanger according to claim 7, characterized in that: the fixing block (34) is provided with a plurality of insertion holes (39) for inserting the positioning rods (35), and the insertion holes (39) are uniformly distributed along the axial direction of the positioning holes (33).

9. The pressure test tool for the floating head heat exchanger according to claim 1, which is characterized in that: connecting piece (3) include a plurality of butt plate (300) of contradicting with barrel flange (05), the articulated installation pole (301) that is connected with on butt plate (300), the thickness direction setting of barrel flange (05) is followed in installation pole (301), it is equipped with baffle (302) to slide the cover on installation pole (301), one side that barrel flange (05) were kept away from in baffle (302) is located spacing ring (2), the one end threaded connection that baffle (302) were passed in installation pole (301) has set nut (303).

10. The pressure test tool for the floating head heat exchanger according to claim 9, characterized in that: and a plurality of anti-skid lugs (304) are arranged on the opposite side walls of the abutting plate (300) and the baffle (302).

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