A rapid detection device and method for spring tube pressure

Abstract

The present application relates to the technical field of spring tube production, and discloses a spring tube pressure rapid detection device, comprising a base, an inflation structure provided on the base, a mounting structure provided on the base, a size detection structure provided on the base, the mounting structure comprising a placement seat and a locking assembly, the placement seat being arranged on the base, a first placement block and a second placement block being provided on the placement seat, a first placement slot being provided on the first placement block, and a second placement slot being provided on the second placement block. The staff of the present application first installs the spring tube on the mounting structure, then inflates the spring tube through the inflation structure, and finally measures the tube end displacement of the spring tube before and after inflation through the size detection structure, and calculates the tube end displacement that the spring tube should have through a formula, so that the staff can know whether the spring tube is qualified by comparing the two data.

Description

Technical Field

[0001] The present application relates to the technical field of spring tube production, and in particular to a spring tube pressure rapid detection device and method. Background Art

[0002] A pressure gauge is a device used to measure and indicate pressure values ​​higher than the ambient pressure. The spring tube is an important component of the pressure gauge. The pressure gauge mainly consists of a Bourdon tube, a threaded joint, a sealing piece and a movement. The spring tube needs to be tested during production to avoid large-scale quality failures in subsequent processes.

[0003] In related technologies, the detection method includes the following steps:

[0004] S1, welding of spring tube and threaded joint;

[0005] S2, welding of spring tube and sealing plug;

[0006] S3, assembling the movement and pointer to form a semi-finished pressure gauge;

[0007] S4. Perform pressure testing on the semi-finished product pressure gauge.

[0008] The testing equipment includes a base, on which is a mounting base for mounting a semi-finished pressure gauge. The base is provided with an inflatable structure that can apply pressure to the pressure gauge. Whether the spring tube is qualified is detected by whether the pointer rotates to the appropriate position.

[0009] Since the pressure testing step of the spring tube requires the assembly of a semi-finished pressure gauge, the testing step of the spring tube is relatively cumbersome; if the spring tube fails to meet the requirements, the entire semi-finished pressure gauge cannot be recycled, and the product testing cost is very high. Summary of the Invention

[0010] In order to improve the problem that spring tube detection requires the assembly of a semi-finished pressure gauge, the present application provides a spring tube pressure rapid detection device and method.

[0011] This application provides a rapid detection device for spring tube pressure, which adopts the following technical solution:

[0012] A spring tube pressure rapid detection device includes a base, the base is provided with an inflation structure for inflating the spring tube, the base is provided with a mounting structure for fixing the spring tube, the base is provided with a size detection structure, the size detection structure is used to detect the displacement of the tube end of the spring tube after inflation, the mounting structure includes a placement seat and a locking assembly, the placement seat is arranged on the base, the placement seat is provided with a first placement block and a second placement block, the first placement block and the second placement block are both elastic, the first placement block is provided with a first placement groove, and the second placement block is provided with a second placement groove; when the spring tube is located in the first placement groove and the second placement groove, the locking assembly drives the first placement block and the second placement block to limit the spring tube from leaving the first placement groove or the second placement groove.

[0013] By adopting the above technical solution, the staff first installs the spring tube on the mounting structure, then inflates the spring tube through the inflation structure, and finally measures the tube end displacement of the spring tube before and after inflation through the size detection structure. The spring tube should have the tube end displacement calculated by the formula, so that the staff can know whether the spring tube is qualified by comparing the two data; the staff first places the spring tube in the first placement groove and the second placement groove, and then drives the locking assembly to abut the first placement block and the second placement block to fix the spring tube in the first placement groove and the second placement groove, thereby reducing the possibility of the spring tube detaching from the first placement block and the second placement block.

[0014] Optionally, the mounting structure also includes a mounting seat, which is arranged on the base, and a mounting groove is provided on the mounting seat. A mounting block is provided on the placement seat, and the mounting block is threadedly connected to the mounting groove; when the spring tube is fixed in the placement seat, the mounting block can be threadedly connected to the mounting groove.

[0015] By adopting the above technical solution, the mounting block is threadedly connected to the mounting groove, so that the placement seat and the mounting seat can be disassembled. The staff can replace different placement seats according to different spring tube sizes, so that the detection equipment can adapt to spring tubes of different sizes; at the same time, when testing spring tubes of different sizes, the inflation structure only needs to be connected to the mounting seat to inflate the spring tube, reducing the need to reconnect the mounting seat and the inflation structure.

[0016] Optionally, the locking assembly includes a locking bolt, a locking hole for the locking bolt to pass through is provided on the first placement block, and a locking groove for the locking bolt to be threadedly connected is provided on the second placement block; when the locking bolt passes through the locking hole and is inserted into the locking groove, the first placement block is fixed on the second placement block.

[0017] By adopting the above technical solution, the locking bolt is inserted into the locking groove through the locking hole, and the locking bolt is threadedly connected to the locking groove, so that the first placement block and the second placement block can be fixed to each other, so that the first placement block and the second placement block can more firmly fix the spring tube, so that the inflation structure can stably inflate the spring tube; at the same time, the end where the spring tube and the mounting seat are fixed is not easily moved due to inflation.

[0018] Optionally, a first sealing ring is provided on the placement seat, the first sealing ring is located in the first placement groove and the second placement groove, and the first sealing ring is sleeved on the spring tube.

[0019] By adopting the above technical solution, when the spring tube is installed in the placement seat, the first sealing ring is sleeved on the spring tube, so that the first sealing ring can limit the problem of gas flowing out of the gap between the spring tube and the placement seat, allowing the inflation structure to stably inflate the spring tube.

[0020] Optionally, the mounting structure also includes a fixing seat, the fixing seat is provided with a receiving groove for inserting the placement seat, the fixing seat is slidably connected to a fixing plate for limiting the placement seat from escaping from the receiving groove, the fixing seat is provided with an elastic stop strip, the stop strip is provided with a stop block, and the fixing plate is provided with a stop hole for inserting the stop block; when the stop block is inserted into the stop hole, the fixing plate is fixed to the fixing seat.

[0021] By adopting the above technical solution, the staff first inserts the placement seat into the accommodating groove, then slides the fixed plate, and finally moves the stop bar to allow the stop block to be inserted into the stop hole, so that the stop block limits the fixed plate to prevent the fixed plate from sliding, so that the fixed plate can limit the placement seat from separating from the fixed seat; when the testing equipment is testing the spring tube, the staff can assemble another spring tube and the mounting seat, and after waiting for the previous spring tube to be tested, the staff only needs to separate the mounting seat and the fixed seat to quickly replace the spring tube, without waiting for the spring tube and the mounting seat to be disassembled and separated, thereby further improving the testing speed of the spring tube.

[0022] Optionally, a linkage bar is slidably connected to the placement seat, and the linkage bar is located on the moving path of the stop block inserted into the stop hole, and the linkage bar is located on the side of the locking bolt away from the locking groove; when the stop block is inserted into the stop hole, the linkage bar abuts the side of the locking bolt away from the locking groove.

[0023] By adopting the above technical solution, when the stop block limits the fixed plate, the linkage bar is located on the insertion path of the stop block, and the stop block can drive the linkage bar to move, so that the linkage bar abuts the side of the locking bolt away from the locking groove. If the locking bolt is not fully inserted into the locking groove and the locking hole, the locking bolt will protrude from the locking hole. At this time, the locking bolt restricts the movement of the linkage bar, that is, the stop block cannot drive the linkage bar to move. The staff can know that the spring tube and the placement seat are not completely fixed, thereby reducing the situation where the spring tube moves between the spring tube and the placement seat when inflating, resulting in detection errors.

[0024] Optionally, a linkage block is provided on the linkage bar, and the linkage block is located on the side of the first sealing ring away from the spring tube. A moving inclined plane is provided on the linkage block, and the distance between the moving inclined plane and the spring tube gradually decreases in the direction from the fixed seat to the placement seat. The first sealing ring is located on the moving path of the moving inclined plane.

[0025] By adopting the above technical solution, the first sealing ring is located on the moving path of the moving inclined plane, so that the linkage block can push the first sealing ring to abut the placement seat, allowing the first sealing ring to fit the spring tube more closely, thereby reducing the possibility of the spring tube being unsealed during inspection.

[0026] Optionally, the placement seat is provided with a receiving block for inserting into the receiving groove, and a bellows is sleeved on the outer surface of the receiving block; when the receiving block is located in the receiving groove, the bellows abuts against the side wall of the receiving groove.

[0027] By adopting the above technical solution, the bellows is sleeved on the accommodating block, so that the bellows can limit the gas flow between the accommodating block and the wall of the accommodating groove, greatly reducing the possibility of gas leakage from the gap between the accommodating groove and the accommodating block.

[0028] A rapid detection method for spring tube pressure, the detection method adopts a rapid detection device for spring tube pressure,

[0029] S1. First, obtain the Poisson's coefficient of the spring tube material, the elastic modulus of the spring tube material, the curvature radius of the spring tube, half of the major axis of the spring tube, half of the minor axis of the spring tube, the wall thickness of the spring tube, the forming angle of the spring tube, and the tube shape coefficient;

[0030] S2. Seal the sealed end of the spring tube by welding, install the spring tube in the mounting structure, apply pressure to the spring tube through the inflation structure, and then detect the displacement of the tube end of the spring tube after inflation through the size detection structure;

[0031] S3. Calculate the end displacement of the spring tube using the formula based on the known information. The formula is:

[0032] Main parameters of spring tube:

[0033] Total displacement of pipe end:

[0034] Radial displacement:

[0035] Axial displacement:

[0036] In the formula, W is the total displacement of the spring tube end;

[0037] γ is the spring tube forming angle;

[0038] Δγ is the deflection angle of the spring tube after being compressed;

[0039] P is the measured pressure;

[0040] M is the Poisson's coefficient of the spring tube material;

[0041] E is the elastic modulus of the spring tube material;

[0042] R is the curvature radius of the spring tube;

[0043] a is half of the long axis of the spring tube;

[0044] b is half of the minor axis of the spring tube;

[0045] α, β are the tube shape coefficients;

[0046] λ is the main parameter of the spring tube;

[0047] h is the wall thickness of the spring tube;

[0048] S4. Compare the displacement of the spring tube before and after pressure is applied to the spring tube.

[0049] In summary, this application includes at least one of the following beneficial technical effects:

[0050] 1. The staff first installs the spring tube on the mounting structure, then inflates the spring tube through the inflation structure, and finally measures the tube end displacement of the spring tube before and after inflation through the size detection structure. The spring tube should have the tube end displacement calculated by the formula, so that the staff can know whether the spring tube is qualified by comparing the two data; the staff first places the spring tube in the first placement slot and the second placement slot, and then drives the locking assembly to abut the first placement block and the second placement block to fix the spring tube in the first placement slot and the second placement slot, reducing the possibility of the spring tube detaching from the first placement block and the second placement block.

[0051] 2. The mounting block is threadedly connected to the mounting groove, so that the placement seat and the mounting seat can be disassembled. The staff can replace different placement seats according to the different sizes of spring tubes, so that the testing equipment can adapt to spring tubes of different sizes; at the same time, the inflatable structure only needs to be connected to the mounting seat to inflate the spring tube, reducing the need to reconnect the mounting seat and the inflatable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 is a schematic structural diagram of Example 1;

[0053] Figure 2 This is an exploded schematic diagram highlighting the placement seat in Example 1;

[0054] Figure 3 It is along Figure 1 Partial cross-sectional view along line AA;

[0055] Figure 4 is a schematic structural diagram of Example 2;

[0056] Figure 5 It is along Figure 4 Partial cross-sectional view of the midline BB;

[0057] Figure 6 is a structural schematic diagram highlighting the fixing plate in Example 2;

[0058] Figure 7 It is a structural diagram highlighting the linkage block in Example 2.

[0059] Reference numerals: 1, base; 2, inflatable structure; 21, inflatable pipe; 22, standard gauge; 23, pressure regulating valve; 3, mounting structure; 31, mounting seat; 311, mounting groove; 312, ring groove; 313, second sealing ring; 32, placement seat; 321, mounting block; 322, first placement block; 323, second placement block; 324, first placement groove; 325, second placement groove; 33, locking assembly; 331, locking hole; 332, locking groove; 34, flow channel; 341. Inflation channel; 35. First sealing ring; 4. Dimension detection structure; 5. Fixed seat; 51. Accommodating groove; 511. First accommodating groove; 52. Accommodating block; 521. Bellows; 53. Fixed plate; 531. Groove; 532. Second accommodating groove; 533. Elastic block; 534. Stop hole; 54. Stop strip; 541. Stop block; 55. Perforation; 551. Linkage strip; 552. Linkage inclined plane; 554. Connecting block; 555. Linkage block; 556. Moving inclined plane. DETAILED DESCRIPTION

[0060] The following is combined with Figure 1-7 This application is described in further detail.

[0061] Example 1

[0062] This embodiment discloses a device and method for quickly detecting the pressure of a spring tube.

[0063] A rapid detection method for spring tube pressure,

[0064] S1. The staff first measures the following data of the spring tube: Poisson's coefficient of the spring tube material, elastic modulus of the spring tube material, curvature radius of the spring tube, half of the major axis of the spring tube, half of the minor axis of the spring tube, wall thickness of the spring tube, spring tube forming angle, and tube shape coefficient. The tube shape coefficient can be obtained by half of the major axis and half of the minor axis of the spring tube, and the tube shape coefficient is different for spring tubes of different shapes.

[0065] S2. The sealed end of the spring tube is welded and sealed by argon arc welding, and the spring tube is installed in the mounting structure. The spring tube is pressurized by the inflation structure, and then the displacement of the tube end of the spring tube after inflation is detected by the size detection structure;

[0066] S3. Calculate the end displacement of the spring tube using the formula based on the known information. The formula is:

[0067] Main parameters of spring tube:

[0068] Total displacement of pipe end:

[0069] Radial displacement:

[0070] Axial displacement:

[0071] In the formula, W is the total displacement of the spring tube end;

[0072] γ is the spring tube forming angle;

[0073] Δγ is the deflection angle of the spring tube after being compressed;

[0074] P is the measured pressure;

[0075] M is the Poisson's coefficient of the spring tube material;

[0076] E is the elastic modulus of the spring tube material;

[0077] R is the curvature radius of the spring tube;

[0078] a is half of the long axis of the spring tube;

[0079] b is half of the minor axis of the spring tube;

[0080] α, β are the tube shape coefficients;

[0081] λ is the main parameter of the spring tube;

[0082] h is the wall thickness of the spring tube;

[0083] S4. Compare the displacement of the spring tube before and after pressure is applied to the spring tube.

[0084] Reference Figure 1 A rapid pressure detection device for a spring tube comprises a base 1, on which are provided an inflation structure 2, a mounting structure 3, a size detection structure 4, and a control structure. The inflation structure 2 is capable of inflating the spring tube, the mounting structure 3 is used for mounting the spring tube, the size detection structure 4 is used to detect the displacement of the tube end of the inflated spring tube, and the control structure is used to analyze the obtained data to determine whether the spring tube is qualified.

[0085] Reference Figure 1 The size detection structure 4 includes a camera, which is located vertically above the mounting structure 3. The camera is fixedly connected to the base 1 and can measure and identify the graphic dimensions before and after the spring tube is pressurized. The inflatable structure 2 includes an inflatable pipe 21, a standard gauge 22, and a pressure regulating valve 23. The standard gauge 22 is fixedly connected to the inflatable pipe 21 and can display the pressure of the gas in the inflatable pipe 21. The pressure regulating valve 23 is fixedly connected to the inflatable pipe 21 and can control the pressure in the inflatable pipe 21.

[0086] Reference Figure 2 The mounting structure 3 includes a mounting seat 31, a placement seat 32 and a locking assembly 33. The mounting seat 31 is fixedly connected to the base 1, the placement seat 32 is used to place the spring tube, and the locking assembly 33 is used to achieve mutual fixation between the spring tube and the placement seat 32.

[0087] Reference Figure 2 and Figure 3 The mounting base 31 defines a flow channel 34, and the placement base 32 defines an inflation channel 341. A mounting groove 311 is defined on the surface of the mounting base 31, extending toward a side away from the inflatable structure 2. A mounting block 321 is integrally formed on the surface of the placement base 32, and the mounting block 321 can be threadedly connected to the mounting groove 311. When the mounting block 321 is threadedly connected to the mounting groove 311, the placement base 32 is fixed to the mounting base 31, and the flow channel 34 and the inflation channel 341 are now connected.

[0088] Reference Figure 3The wall of the mounting groove 311 is provided with an annular groove 312, into which a second sealing ring 313 is fixedly connected. When the mounting block 321 is threadedly connected to the mounting groove 311, the second sealing ring 313 is sleeved on the mounting block 321, thereby sealing the gap between the mounting block 321 and the mounting groove 311.

[0089] Reference Figure 2 and Figure 3 A first placement block 322 and a second placement block 323 are integrally formed on the surface of the placement seat 32 away from the mounting block 321. Both the first placement block 322 and the second placement block 323 are elastic. A first placement groove 324 is defined on the surface of the first placement block 322 away from the placement seat 32. The first placement groove 324 extends through the outer surface of the first placement block 322 near the second placement block 323. A second placement groove 325 is defined on the surface of the second placement block 323 away from the placement seat 32. The second placement groove 325 extends through the outer surface of the second placement block 323 near the first placement block 322. Both the first placement groove 324 and the second placement groove 325 are for placing the spring tube, and both the first placement groove 324 and the second placement groove 325 are connected to the inflation channel 341.

[0090] Reference Figure 2 The locking assembly 33 includes two locking bolts. Two locking holes 331 are defined on the surface of the first placement block 322, facing away from the second placement block 323. These countersunk locking holes 331 allow the locking bolts to pass through. Two locking grooves 332 are defined on the surface of the second placement block 323, facing closer to the first placement block 322. The groove walls of the locking grooves 332 allow the locking bolts to threadably engage. The locking bolts pass through the locking holes 331 and threadably engage within the locking grooves 332, securing the first and second placement blocks 322, 323. The spring tube is now positioned within the first and second placement blocks 322, 323.

[0091] Reference Figure 2 A first sealing ring 35 is sleeved on the outer surface of the spring tube. When the spring tube is located in the first placement groove 324 and the second placement groove 325, the outer surface of the first sealing ring 35 abuts against the groove wall of the first placement groove 324 and the groove wall of the second placement groove 325.

[0092] The implementation principle of Example 1 is: first, various data of the spring tube are measured and the data is input into the control structure, then the sealed end of the spring tube is sealed by welding, and the first sealing ring 35 is sleeved on the spring tube, and the spring tube is installed on the mounting seat 31. Finally, the inflatable structure 2 applies pressure to the spring tube, and the displacement of the tube end of the spring tube is measured by the camera. The control structure automatically calculates the displacement of the tube end of the spring tube based on the previously obtained data to determine whether the pressure of the spring tube is qualified.

[0093] Example 2

[0094] Reference Figure 4 The difference between this embodiment and embodiment 1 is that the mounting structure 3 includes a fixing seat 5, a placement seat 32 and a locking assembly 33. The structure of the first placement block 322 in the placement seat 32, the second placement block 323 in the placement seat 32 and the locking assembly 33 is the same as that of embodiment 1, and the fixing seat 5 is fixedly connected to the base 1.

[0095] Reference Figure 4 and Figure 5 The surface of the fixing base 5 away from the ground is provided with a receiving groove 51 for inserting the placement seat 32. The receiving groove 51 extends to the side of the fixing base 5 away from the inflatable structure 2. A receiving block 52 is integrally formed on the surface of the mounting base 31 for inserting into the receiving groove 51. A bellows 521 is sleeved on the outer surface of the receiving block 52 and fixed to the outer surface of the receiving block 52. The bellows 521 extends along the length of the receiving block 52. A first receiving groove 511 is provided on the wall of the receiving groove 51 for receiving the bellows 521.

[0096] Reference Figure 5 A second sealing ring 313 is sleeved on the outer surface of the accommodating block 52. The second sealing ring 313 is located on the side of the bellows 521 facing the placement seat 32. When the accommodating block 52 is located in the accommodating groove 51, the bellows 521 can abut against the groove wall of the first accommodating groove 511, and the second sealing ring 313 can abut against the groove wall of the accommodating groove 51, thereby sealing the gap between the accommodating block 52 and the fixing seat 5.

[0097] Reference Figure 4 、 Figure 5 and Figure 6 A fixing plate 53 is slidably connected to the surface of the fixing base 5 away from the ground. The fixing plate 53 slides in the direction from the inflatable structure 2 to the fixing base 5. A groove 531 is defined on the surface of the fixing plate 53 near the fixing base 5 for receiving the accommodating block 52. The groove 531 extends to the side of the fixing plate 53 away from the inflatable structure 2. A second accommodating groove 532 is defined on the surface of the fixing plate 53 near the fixing base 5 for receiving the bellows 521. The second accommodating groove 532 extends to the side of the fixing plate 53 away from the inflatable structure 2.

[0098] Reference Figure 4 、 Figure 5 and Figure 6An elastic block 533 is fixedly connected to the wall of the second accommodating groove 532. When the accommodating block 52 is located in the accommodating groove 51, the staff slides the fixing plate 53 to ensure that the accommodating block 52 is located in the groove 531. That is, the fixing plate 53 prevents the accommodating block 52 from being separated from the accommodating groove 51. The elastic block 533 is located on the side of the bellows 521 away from the inflatable structure 2. At this time, the elastic block 533 prevents the bellows 521 from being separated from the second accommodating groove 532, and the elastic block 533 abuts the second sealing ring 313 to prevent gas from being separated from between the elastic block 533 and the second sealing ring 313.

[0099] Reference Figure 4 and Figure 5 Two stop bars 54 are fixedly connected to the surface of the fixing base 5 away from the ground. The stop bars 54 extend toward each other. The stop bars 54 are elastic and can deform in a direction away from the ground. A stop block 541 is fixedly connected to the surface of the stop bar 54 facing the ground. The surface of the fixing plate 53 away from the ground is provided with a stop hole 534 for the stop block 541 to be inserted.

[0100] Reference Figure 4 and Figure 5 When the fixing plate 53, the receiving block 52, and the fixing base 5 are assembled, the stop hole 534 penetrates the elastic block 533 and extends to the surface of the receiving block 52. The stop block 541 can be inserted into the stop hole 534, that is, the stop block 541 restricts the movement of the receiving block 52 and the fixing plate 53. When the stop block 541 is inserted into the stop hole 534, the fixing plate 53 can be fixed to the fixing base 5. At this time, the stop block 541 can prevent the elastic block 533 from deforming away from the inflatable structure 2, that is, the elastic block 533 can better fix the second sealing ring 313.

[0101] Reference Figure 5 A through hole 55 connected to the stop hole 534 is provided on the surface of the accommodating block 52, and the stop block 541 can be inserted into the through hole 55. The through hole 55 passes through the placement seat 32 and the first placement block 322, and the through hole 55 is connected to the locking hole 331. When the accommodating block 52 is installed in the accommodating groove 51, the through hole 55 is aligned with the stop hole 534. A linkage bar 551 is slidably connected in the through hole 55, and a linkage inclined surface 552 is provided on the end surface of the linkage bar 551 close to the placement seat 32. The distance between the linkage inclined surface 552 and the stop bar 54 gradually increases along the direction from the placement seat 32 to the fixed seat 5, and the linkage inclined surface 552 is located on the moving path of the stop block 541 inserted into the through hole 55.

[0102] Reference Figure 5When the stop block 541 is inserted into the stop hole 534, the stop block 541 can be located in the through-hole 55. At this time, the stop block 541 drives the linkage bar 551 to move through the linkage inclined surface 552, thereby realizing the movement of the linkage bar 551 in the through-hole 55, allowing the linkage bar 551 to be located in the locking hole 331. At this time, the linkage bar 551 is located on the side of the locking bolt away from the locking groove 332; if the locking bolt is not fully threaded into the locking groove 332, the linkage bar 551 can abut the side of the locking bolt. At this time, the stop bar 54 will be deformed, so that the staff can directly know that the locking bolt is not securely fixed.

[0103] Reference Figure 5 and Figure 7 A through hole connected to the first placement groove 324 is provided on the wall of the through hole 55, and the through hole extends along the length direction of the through hole 55. A connecting block 554 is integrally formed on the surface of the linkage bar 551, and the connecting block 554 slides in the through hole. A linkage block 555 is integrally formed on the surface of the connecting block 554 away from the linkage bar 551, and the linkage block 555 extends along the circumference of the spring tube. The linkage block 555 can slide in the through hole, and the linkage block 555 is located on the side of the first sealing ring 35 away from the elastic tube. A moving inclined surface 556 is provided on the linkage block 555, and the distance between the moving inclined surface 556 and the spring tube gradually decreases in the direction from the fixed seat 5 to the placement seat 32, and the first sealing ring 35 is located on the moving path of the moving inclined surface 556.

[0104] Reference Figure 5 and Figure 7 When the stop block 541 moves through the linkage inclined surface 552, the linkage bar 551 can drive the linkage block 555 to move, so that the linkage block 555 drives the first sealing ring 35 to abut the spring tube more closely through the moving inclined surface 556, so that the first sealing ring 35 can stably seal the spring tube.

[0105] The implementation principle of Example 2 is as follows: the staff first moves the stop bar 54 to disengage the stop block 541 from the stop groove, then slides the fixing plate 53, replaces the placement seat 32, allows the accommodating block 52 in the other placement seat 32 to be installed in the accommodating groove 51, and slides the fixing plate 53, and then moves the stop bar 54 to allow the stop block 541 to pass through the stop hole 534 and insert into the through hole 55. The stop block 541 drives the linkage bar 551 to move through the linkage inclined surface 552, so that the linkage bar 551 abuts against the end face of the locking bolt away from the locking groove 332.

[0106] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0107] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application should be included in the scope of protection of the present application.

Claims

1. A rapid detection device for spring tube pressure, characterized by: The invention comprises a base (1), wherein the base (1) is provided with an inflation structure (2) for inflating a spring tube, the base (1) is provided with a mounting structure (3) for fixing the spring tube, the base (1) is provided with a size detection structure (4), the size detection structure (4) is used to detect the displacement of the tube end of the spring tube after inflation, the mounting structure (3) comprises a placement seat (32) and a locking assembly (33), the placement seat (32) is arranged on the base (1), and the placement seat (32) is provided with a first placement block (322) and a second placement block (323), the first placement block (322) and the second placement block (323) are both elastic, a first placement groove (324) is provided on the first placement block (322), and a second placement groove (325) is provided on the second placement block (323); when the spring tube is located in the first placement groove (324) and the second placement groove (325), the locking assembly (33) drives the first placement block (322) and the second placement block (323) to restrict the spring tube from leaving the first placement groove (324) or the second placement groove (325); The locking assembly (33) includes a locking bolt, a locking hole (331) for the locking bolt to pass through is formed on the first placement block (322), and a locking groove (332) for the locking bolt to be threadedly connected is formed on the second placement block (323); when the locking bolt passes through the locking hole (331) and is inserted into the locking groove (332), the first placement block (322) is fixed to the second placement block (323); The placement seat (32) is provided with a first sealing ring (35), the first sealing ring (35) is located in the first placement groove (324) and the second placement groove (325), and the first sealing ring (35) is sleeved on the spring tube; The mounting structure (3) further comprises a fixing seat (5), the fixing seat (5) being provided with a receiving groove (51) for inserting the placement seat (32), the fixing seat (5) being slidably connected with a fixing plate (53) for limiting the placement seat (32) from separating from the receiving groove (51), the fixing seat (5) being provided with an elastic stop bar (54), the stop bar (54) being provided with a stop block (541), the fixing plate (53) being provided with a stop hole (534) for inserting the stop block (541); when the stop block (541) is inserted into the stop hole (534), the fixing plate (53) is fixed to the fixing seat (5); A linkage bar (551) is slidably connected to the placement seat (32), and the linkage bar (551) is located on the moving path of the stop block (541) inserted into the stop hole (534). The linkage bar (551) is located on the side of the locking bolt away from the locking groove (332); when the stop block (541) is inserted into the stop hole (534), the linkage bar (551) abuts against the side of the locking bolt away from the locking groove (332).

2. The spring tube pressure rapid detection device according to claim 1, characterized in that: The mounting structure (3) further comprises a mounting seat (31), the mounting seat (31) being arranged on the base (1), a mounting groove (311) being provided on the mounting seat (31), a mounting block (321) being provided on the placement seat (32), and the mounting block (321) being threadedly connected to the mounting groove (311); when the spring tube is fixed in the placement seat (32), the mounting block (321) can be threadedly connected to the mounting groove (311).

3. The spring tube pressure rapid detection device according to claim 1, characterized in that: The linkage bar (551) is provided with a linkage block (555), the linkage block (555) is located on a side of the first sealing ring (35) away from the spring tube, the linkage block (555) is provided with a moving inclined surface (556), the distance between the moving inclined surface (556) and the spring tube gradually decreases along the direction from the fixed seat (5) to the placement seat (32), and the first sealing ring (35) is located on the moving path of the moving inclined surface (556).

4. The spring tube pressure rapid detection device according to claim 3, characterized in that: The placement seat (32) is provided with a receiving block (52) for inserting into the receiving groove (51), and a bellows (521) is sleeved on the outer surface of the receiving block (52); when the receiving block (52) is located in the receiving groove (51), the bellows (521) abuts against the side wall of the receiving groove (51).

5. A method for quickly detecting the pressure of a spring tube, the method using a device for quickly detecting the pressure of a spring tube according to any one of claims 1 to 4, characterized in that: S1. First, obtain the Poisson's coefficient of the spring tube material, the elastic modulus of the spring tube material, the curvature radius of the spring tube, half of the major axis of the spring tube, half of the minor axis of the spring tube, the wall thickness of the spring tube, the forming angle of the spring tube, and the tube shape coefficient; S2, sealing the sealed end of the spring tube by welding, and installing the spring tube in the installation structure (3), applying pressure to the spring tube through the inflation structure (2), and then detecting the displacement of the tube end of the spring tube after inflation through the size detection structure (4); S3. Calculate the end displacement of the spring tube using the formula based on the known information. The formula is: The main parameters of the spring tube: λ = Rh / a 2 Total displacement of pipe end: Radial displacement: W r =W(1-cosγ) Axial displacement: W t =W(γ-sinγ) In the formula, W is the total displacement of the spring tube end; γ is the spring tube forming angle; Δγ is the deflection angle of the spring tube after being compressed; P is the measured pressure; μ is the Poisson coefficient of the spring tube material; E is the elastic modulus of the spring tube material; R is the curvature radius of the spring tube; a is half of the long axis of the spring tube; b is half of the minor axis of the spring tube; α, β are the tube shape coefficients; λ is the main parameter of the spring tube; h is the wall thickness of the spring tube; S4. Compare the displacement of the spring tube before and after pressure is applied to the spring tube.

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