Bourdon tube pressure rapid detection equipment and method

Abstract

The invention relates to the technical field of bourdon tube production, and discloses bourdon tube pressure rapid detection equipment which comprises a base, an inflation structure arranged on the base, a mounting structure arranged on the base and a size detection structure arranged on the base, the mounting structure comprises a placement seat and a locking assembly, the placement seat is arranged on the base, and the locking assembly is arranged on the placement seat. A first placing block and a second placing block are arranged on the placing seat, a first placing groove is formed in the first placing block, and a second placing groove is formed in the second placing block. And finally, the pipe end displacement before and after inflation of the bourdon pipe is measured through a size detection structure, and the due pipe end displacement of the bourdon pipe is calculated through a formula, so that a worker can know whether the bourdon pipe is qualified or not by comparing the two pieces of data.

Description

Technical Field

[0001] This application relates to the technical field of bourdon tube production, and particularly to a rapid pressure detection device and method for bourdon tubes. Background Art

[0002] A pressure gauge is a device used to measure and indicate pressure values higher than ambient pressure. The bourdon 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. When the bourdon tube is produced and formed, it needs to be detected to avoid a large number of unqualified products in subsequent processes.

[0003] In related technologies, the detection method includes the following steps: S1. Weld the bourdon tube and the threaded joint; S2. Weld the bourdon tube and the sealing plug; S3. Assemble the movement and the pointer to form a semi-finished pressure gauge; S4. Perform pressure detection on the semi-finished pressure gauge.

[0004] The detection device includes a base. An installation seat is provided on the base, and the installation seat is used to install the semi-finished pressure gauge. An inflation structure is provided on the base, and the inflation structure can apply pressure to the pressure gauge. Whether the pointer rotates to a suitable position is used to detect whether the bourdon tube is qualified.

[0005] Since the pressure detection step of the bourdon tube requires assembling the semi-finished pressure gauge, the detection step of the bourdon tube is relatively cumbersome; if the bourdon tube is unqualified, the entire semi-finished pressure gauge cannot be recycled, and the detection cost of the product is very high. Summary of the Invention

[0006] In order to improve the problem that the detection of the bourdon tube requires assembling the semi-finished pressure gauge, this application provides a rapid pressure detection device and method for bourdon tubes.

[0007] A rapid pressure detection device for bourdon tubes provided by this application adopts the following technical solution: A spring tube pressure rapid detection device, including a base, an inflation structure for inflating the spring tube is provided on the base, an installation structure for fixing the spring tube is provided on the base, a dimension detection structure is provided on the base, and the dimension detection structure is used to detect the displacement of the tube end of the spring tube after inflation. The installation structure includes a placement seat and a locking component. The placement seat is arranged on the base. The placement seat is provided with a first placement block and a second placement block. Both the first placement block and the second placement block are elastic. A first placement groove is opened on the first placement block, and a second placement groove is opened on the second placement block; when the spring tube is located in the first placement groove and the second placement groove, the locking component drives the first placement block and the second placement block to limit the spring tube from disengaging from the first placement groove or the second placement groove.

[0008] By adopting the above technical solution, the staff first installs the spring tube on the installation structure, then inflates the spring tube through the inflation structure, and finally measures the displacement of the tube end of the spring tube before and after inflation through the dimension detection structure, and calculates the expected displacement of the tube end of the spring tube through a 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 component to make the first placement block and the second placement block abut against each other, so as to fix the spring tube in the first placement groove and the second placement groove, reducing the possibility of the spring tube disengaging from the first placement block and the second placement block.

[0009] Optionally, the installation structure further includes an installation seat. The installation seat is arranged on the base. An installation groove is opened on the installation seat. An installation block is provided on the placement seat. The installation block is threadedly connected to the installation groove; when the spring tube is fixed in the placement seat, the installation block can be threadedly connected to the installation groove.

[0010] By adopting the above technical solution, by threadedly connecting the installation block to the installation groove, the placement seat and the installation seat can be disassembled. The staff can replace different placement seats according to different spring tube sizes, so that the detection device can adapt to spring tubes of different sizes; at the same time, when detecting spring tubes of different sizes, the inflation structure only needs to be connected to the installation seat to inflate the spring tube, reducing the operation of reconnecting the installation seat and the inflation structure.

[0011] Optionally, the locking component includes a locking bolt. A locking hole for the locking bolt to pass through is opened on the first placement block, and a locking groove for the locking bolt to be threadedly connected is opened 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 to the second placement block.

[0012] 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, enabling the first placement block and the second placement block to fix the spring tube more securely, making the inflation structure capable of inflating the spring tube stably; at the same time, the end of the spring tube fixed to the mounting seat is not likely to move due to inflation.

[0013] 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.

[0014] 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 from the gap between the spring tube and the placement seat, making the inflation structure capable of inflating the spring tube stably.

[0015] Optionally, the mounting structure further includes a fixed seat, a receiving groove for inserting the placement seat is provided on the fixed seat, a fixing plate for restricting the placement seat from disengaging from the receiving groove is slidably connected to the fixed seat, an elastic stop bar is provided on the fixed seat, a stop block is provided on the stop bar, and a stop hole for inserting the stop block is provided on the fixing plate; when the stop block is inserted into the stop hole, the fixing plate is fixed to the fixed seat.

[0016] By adopting the above technical solution, the staff first inserts the placement seat into the receiving groove, then slides the fixing plate, and finally the staff moves the stop bar to make the stop block insert into the stop hole, realizing the limitation of the fixing plate by the stop block and preventing the fixing plate from sliding, so that the fixing plate can restrict the placement seat from disengaging from the fixed seat; when the detection device detects the spring tube, the staff can assemble another spring tube and the mounting seat, and after the previous spring tube is detected, the staff only needs to separate the mounting seat and the fixed seat to quickly replace the spring tube, without waiting for the disassembly and separation of the spring tube and the mounting seat, further improving the detection speed of the spring tube.

[0017] Optionally, a linkage bar is slidably connected to the placement seat, the linkage bar is located on the moving path of the stop block inserting 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 against the side of the locking bolt away from the locking groove.

[0018] By adopting the above technical solution, when the stop block limits the fixing plate, since the linkage bar is located on the insertion path of the stop block, the stop block can drive the linkage bar to move, causing the linkage bar to abut against 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, and the staff can then know that the bellows tube and the placement seat are not fully fixed, reducing the situation of detection errors caused by the movement between the bellows tube and the placement seat during inflation of the bellows tube.

[0019] Optionally, a linkage block is provided on the linkage bar. The linkage block is located on the side of the first sealing ring away from the bellows tube. A moving inclined surface is formed on the linkage block. The distance between the moving inclined surface and the bellows tube gradually decreases along the direction from the fixed seat to the placement seat. The first sealing ring is located on the moving path of the moving inclined surface.

[0020] By adopting the above technical solution, since the first sealing ring is located on the moving path of the moving inclined surface, the linkage block can push the first sealing ring to abut against the placement seat, enabling the first sealing ring to fit more closely to the bellows tube and reducing the situation of unsealing during the detection of the bellows tube.

[0021] Optionally, a receiving block for inserting into the receiving groove is provided on the placement seat. A corrugated pipe is sleeved on the outer surface of the receiving block; when the receiving block is located in the receiving groove, the corrugated pipe abuts against the side wall of the receiving groove.

[0022] By adopting the above technical solution, by sleeving the corrugated pipe on the receiving block, the corrugated pipe can restrict the gas flow between the receiving block and the wall of the receiving groove, greatly reducing the possibility of gas leakage through the gap between the receiving groove and the receiving block.

[0023] A method for rapid pressure detection of a bellows tube. The detection method uses a rapid pressure detection device for a bellows tube. S1. First, obtain the Poisson's ratio of the bellows tube material, the elastic modulus of the bellows tube material, the curvature radius of the bellows tube, half of the major axis of the bellows tube, half of the minor axis of the bellows tube, the wall thickness of the bellows tube, the forming angle of the bellows tube, and the tube shape coefficient. S2. Seal the sealed end of the bellows tube by welding, and install the bellows tube in the installation structure. Apply pressure to the bellows tube through the inflation structure, and then detect the tube end displacement of the bellows tube after inflation through the dimension detection structure. S3. Calculate the tube end displacement of the bellows tube according to the known information through the formula. The formula is: Main parameters of the bellows tube:

[0024] Total tube end displacement:

[0025] Radial displacement:

[0026] Axial displacement:

[0027] In the formula, W is the total displacement at the end of the bourdon tube; γ is the forming angle of the bourdon tube; Δγ is the deflection angle of the bourdon tube after being pressurized; P is the measured pressure; Μ is the Poisson's coefficient of the bourdon tube material; E is the elastic modulus of the bourdon tube material; R is the radius of curvature of the bourdon tube; a is half of the major axis of the bourdon tube; b is half of the minor axis of the bourdon tube; α, β are tube shape coefficients; λ is the main parameter of the bourdon tube; h is the wall thickness of the bourdon tube; S4. By comparing the displacement of the bourdon tube before and after pressurization.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The staff first installs the bourdon tube on the installation structure, then inflates the bourdon tube through the inflation structure, and finally measures the displacement of the tube end of the bourdon tube before and after inflation through the dimension detection structure. The expected displacement of the tube end of the bourdon tube is calculated by the formula, so that the staff can know whether the bourdon tube is qualified by comparing the two data; the staff first places the bourdon tube in the first placement groove and the second placement groove, and then drives the first placement block and the second placement block to abut by the locking component, so as to fix the bourdon tube in the first placement groove and the second placement groove, reducing the possibility of the bourdon tube detaching from the first placement block and the second placement block.

[0029] 2. By screwing the installation block into the installation groove, the placement seat and the installation seat can be disassembled, and the staff can replace different placement seats according to different bourdon tube sizes, so that the detection device can adapt to bourdon tubes of different sizes; at the same time, the inflation structure only needs to be connected to the installation seat to inflate the bourdon tube, reducing the operation of reconnecting the installation seat and the inflation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of Embodiment 1; Figure 2 is an exploded schematic diagram highlighting the placement seat in Embodiment 1; Figure 3 is along Figure 1Partial sectional view along line A-A; Figure 4 It is a schematic structural diagram of Embodiment 2; Figure 5 along Figure 4 Partial sectional view along line B-B in; Figure 6 It is a schematic structural diagram highlighting the fixing plate in Embodiment 2; Figure 7 It is a schematic structural diagram highlighting the linkage block in Embodiment 2.

[0031] Reference numerals: 1, base; 2, inflation structure; 21, inflation pipeline; 22, standard gauge; 23, pressure regulating valve; 3, installation structure; 31, mounting seat; 311, installation groove; 312, annular 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, receiving groove; 511, first accommodation groove; 52, receiving block; 521, bellows; 53, fixing plate; 531, groove; 532, second accommodation groove; 533, elastic block; 534, stop hole; 54, stop bar; 541, stop block; 55, perforation; 551, linkage bar; 552, linkage inclined surface; 554, connecting block; 555, linkage block; 556, moving inclined surface. Detailed implementation manners

[0032] The following further elaborates on this application Figures 1-7 in conjunction with the appended drawings.

[0033] Embodiment 1 This embodiment discloses a Bourdon tube pressure rapid detection device and method.

[0034] A Bourdon tube pressure rapid detection method, S1. The staff first measures the following data of the Bourdon tube: Poisson's ratio of the Bourdon tube material, elastic modulus of the Bourdon tube material, curvature radius of the Bourdon tube, half of the major axis of the Bourdon tube, half of the minor axis of the Bourdon tube, wall thickness of the Bourdon tube, forming angle of the Bourdon tube, and tube shape coefficient. The tube shape coefficient can be obtained from half of the major axis and half of the minor axis of the Bourdon tube, and the tube shape coefficient is different for different shaped Bourdon tubes; S2. The sealed end of the Bourdon tube is welded and sealed by argon arc welding, and the Bourdon tube is installed in the installation structure. The Bourdon tube is pressurized through the inflation structure, and then the tube end displacement of the inflated Bourdon tube is detected by the dimension detection structure; S3. Calculate the end displacement of the bourdon tube based on the known information through the formula: Main parameters of the bourdon tube:

[0035] Total end displacement:

[0036] Radial displacement:

[0037] Axial displacement:

[0038] In the formula, W is the total end displacement of the bourdon tube; γ is the forming angle of the bourdon tube; Δγ is the deflection angle of the bourdon tube after being pressurized; P is the measured pressure; Μ is the Poisson's coefficient of the bourdon tube material; E is the elastic modulus of the bourdon tube material; R is the radius of curvature of the bourdon tube; a is half of the major axis of the bourdon tube; b is half of the minor axis of the bourdon tube; α, β are tube shape coefficients; λ is the main parameter of the bourdon tube; h is the wall thickness of the bourdon tube; S4. Compare the displacement of the bourdon tube before and after pressurization.

[0039] Refer to Figure 1 , a rapid bourdon tube pressure detection device, including a base 1, on which an inflation structure 2, a mounting structure 3, a dimension detection structure 4 and a control structure are provided. The inflation structure 2 can inflate the bourdon tube, the mounting structure 3 is for mounting the bourdon tube, the dimension detection structure 4 is used to detect the end displacement of the inflated bourdon tube, and the control structure is used to analyze the obtained data to facilitate the judgment of whether the bourdon tube is qualified.

[0040] Refer to Figure 1 , the dimension 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 the camera can measure and identify the graphic dimensions of the bourdon tube before and after pressurization. The inflation structure 2 includes an inflation pipeline 21, a standard gauge 22 and a pressure regulating valve 23. The standard gauge 22 is fixedly connected to the inflation pipeline 21, and the standard gauge 22 can display the pressure of the gas in the inflation pipeline 21. The pressure regulating valve 23 is fixedly connected to the inflation pipeline 21, and the pressure regulating valve 23 can control the pressure in the inflation pipeline 21.

[0041] Refer to Figure 2, the mounting structure 3 includes a mounting base 31, a placement base 32 and a locking assembly 33. The mounting base 31 is fixedly connected to the base 1. The placement base 32 is used for placing the bellows, and the locking assembly 33 is used to fix the bellows and the placement base 32 to each other.

[0042] Refer to Figure 2 and Figure 3 , a flow channel 34 is formed in the mounting base 31, and an inflation channel 341 is formed in the placement base 32. An installation groove 311 is formed on the surface of the mounting base 31, and the installation groove 311 extends away from the inflation structure 2. An installation block 321 is integrally formed on the surface of the placement base 32, and the installation block 321 can be threadedly connected into the installation groove 311. When the installation block 321 is threadedly connected into the installation groove 311, the placement base 32 is fixed to the mounting base 31, and at this time, the flow channel 34 and the inflation channel 341 are communicated with each other.

[0043] Refer to Figure 3 , a ring groove 312 is formed on the groove wall of the installation groove 311, and a second sealing ring 313 is fixedly connected in the ring groove 312. When the installation block 321 is threadedly connected into the installation groove 311, the second sealing ring 313 is sleeved on the installation block 321, so that the second sealing ring 313 seals the gap between the installation block 321 and the installation groove 311.

[0044] Refer to 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 base 32 away from the installation block 321, and both the first placement block 322 and the second placement block 323 are elastic. A first placement groove 324 is formed on the surface of the first placement block 322 away from the placement base 32, and the first placement groove 324 penetrates to the outer surface of the first placement block 322 close to the second placement block 323. A second placement groove 325 is formed on the surface of the second placement block 323 away from the placement base 32, and the second placement groove 325 penetrates to the outer surface of the second placement block 323 close to the first placement block 322. Both the first placement groove 324 and the second placement groove 325 are for placing the bellows, and both the first placement groove 324 and the second placement groove 325 are communicated with the inflation channel 341.

[0045] Refer to Figure 2, the locking assembly 33 includes two locking bolts. Two locking holes 331 are formed in the surface of the first placing block 322 away from the second placing block 323. The locking bolts pass through the locking holes 331, and the locking holes 331 are counterbored holes. Two locking grooves 332 are formed in the surface of the second placing block 323 close to the first placing block 322. The wall of the locking groove 332 is for threaded connection of the locking bolts. The locking bolts pass through the locking holes 331 and are threadedly connected in the locking grooves 332, realizing the mutual fixation of the first placing block 322 and the second placing block 323. At this time, the spring tube is located in the first placing block 322 and the second placing block 323.

[0046] Referring to 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 placing groove 324 and the second placing groove 325, the outer surface of the first sealing ring 35 abuts against the wall of the first placing groove 324 and the wall of the second placing groove 325.

[0047] The implementation principle of Embodiment 1 is as follows: First, measure various data of the spring tube and input the data into the control structure. Then, seal the sealing end of the spring tube by welding, and sleeved the first sealing ring 35 on the spring tube. Install the spring tube on the mounting seat 31. Finally, the inflation 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, and determines whether the pressure of the spring tube is qualified.

[0048] Embodiment 2 Referring to Figure 4 , the difference between this embodiment and Embodiment 1 is that the installation structure 3 includes a fixed seat 5, a placing seat 32 and a locking assembly 33. The structures of the first placing block 322 in the placing seat 32, the second placing block 323 in the placing seat 32 and the locking assembly 33 are the same as those in Embodiment 1, and the fixed seat 5 is fixedly connected to the base 1.

[0049] Referring to Figure 4 and Figure 5 , a receiving groove 51 for inserting the placing seat 32 is formed in the surface of the fixed seat 5 away from the ground, and the receiving groove 51 penetrates to the side of the fixed seat 5 away from the inflation structure 2. A receiving block 52 for inserting into the receiving groove 51 is integrally formed on the surface of the mounting seat 31. A corrugated pipe 521 is sleeved on the outer surface of the receiving block 52, and the corrugated pipe 521 is fixed on the outer surface of the receiving block 52. The corrugated pipe 521 extends along the length direction of the receiving block 52. A first accommodating groove 511 for placing the corrugated pipe 521 is formed in the wall of the receiving groove 51.

[0050] Referring to Figure 5, a second sealing ring 313 is sleeved on the outer surface of the accommodation block 52, and the second sealing ring 313 is located on the side of the corrugated pipe 521 facing the placement seat 32. When the accommodation block 52 is located in the accommodation groove 51, the corrugated pipe 521 can abut against the wall of the first accommodation groove 511, and the second sealing ring 313 can abut against the wall of the accommodation groove 51, so as to seal the gap between the accommodation block 52 and the fixed seat 5 by the corrugated pipe 521 and the second sealing ring 313.

[0051] Refer to Figure 4 , Figure 5 and Figure 6 , a fixing plate 53 is slidably connected to the surface of the fixed seat 5 away from the ground, and the fixing plate 53 slides along the direction from the inflation structure 2 to the fixed seat 5. A groove 531 for placing the accommodation block 52 is formed on the surface of the fixing plate 53 close to the fixed seat 5, and the groove 531 penetrates to the side of the fixing plate 53 away from the inflation structure 2. A second accommodation groove 532 is formed on the surface of the fixing plate 53 close to the fixed seat 5, and the second accommodation groove 532 is for placing the corrugated pipe 521, and the second accommodation groove 532 penetrates to the side of the fixing plate 53 away from the inflation structure 2.

[0052] Refer to Figure 4 , Figure 5 and Figure 6 , an elastic block 533 is fixedly connected to the wall of the second accommodation groove 532. When the accommodation block 52 is located in the accommodation groove 51, the staff slides the fixing plate 53 to make the accommodation block 52 located in the groove 531, that is, the fixing plate 53 restricts the accommodation block 52 from disengaging from the accommodation groove 51. The elastic block 533 is located on the side of the corrugated pipe 521 away from the inflation structure 2. At this time, the elastic block 533 restricts the corrugated pipe 521 from disengaging from the second accommodation groove 532, and the elastic block 533 abuts against the second sealing ring 313 to restrict the gas from disengaging between the elastic block 533 and the second sealing ring 313.

[0053] Refer to Figure 4 and Figure 5 , two stop bars 54 are fixedly connected to the surface of the fixed seat 5 away from the ground, and the stop bars 54 extend in the direction towards the other stop bar 54. The stop bars 54 are elastic, and the stop bars 54 can be deformed in the direction away from the ground. A stop block 541 is fixedly connected to the surface of the stop bar 54 facing the ground, and a stop hole 534 for inserting the stop block 541 is formed on the surface of the fixing plate 53 away from the ground.

[0054] Refer to 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 through the elastic block 533, and the stop hole 534 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 restrict the elastic block 533 from deforming in the direction away from the inflation structure 2, that is, the elastic block 533 can better fix the second sealing ring 313.

[0055] Refer to Figure 5 , a through hole 55 communicating with the stop hole 534 is formed on the surface of the receiving block 52. The stop block 541 can be inserted into the through hole 55. The through hole 55 penetrates through to the placing seat 32 and the first placing block 322, and the through hole 55 communicates with the locking hole 331. When the receiving block 52 is installed in the receiving 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. A linkage inclined surface 552 is formed on the end surface of the linkage bar 551 close to the placing seat 32. The distance between the linkage inclined surface 552 and the stop bar 54 increases gradually along the direction from the placing seat 32 to the fixing base 5, and the linkage inclined surface 552 is located on the moving path of the stop block 541 when it is inserted into the through hole 55.

[0056] Refer to Figure 5 , when 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, realizing the movement of the linkage bar 551 in the through hole 55, so that the linkage bar 551 can 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 screwed into the locking groove 332, the linkage bar 551 can abut against the side surface of the locking bolt. At this time, the stop bar 54 will deform, so that the staff can directly know that the locking bolt is not firmly fixed.

[0057] Refer to Figure 5 and Figure 7 , a through hole communicating with the first placing groove 324 is formed on the hole wall of the through hole 55. 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. 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. The linkage block 555 extends along the circumferential direction of the spring tube. The linkage block 555 can slide in the through hole. 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 formed on the linkage block 555. The distance between the moving inclined surface 556 and the spring tube decreases gradually along the direction from the fixing base 5 to the placing seat 32. The first sealing ring 35 is located on the moving path of the moving inclined surface 556.

[0058] Refer to 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 against the spring tube more tightly through the moving inclined surface 556, realizing that the first sealing ring 35 can stably seal the spring tube.

[0059] The implementation principle of Embodiment 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 fixed plate 53 to replace the placement seat 32, so that the receiving block 52 in another placement seat 32 is installed in the receiving groove 51, and then slides the fixed plate 53, and then moves the stop bar 54 to make the stop block 541 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 surface of the locking bolt away from the locking groove 332.

[0060] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those of ordinary skill in the field to which this application belongs. The terms "first", "second", "third" and similar terms used in the specification and claims of this application do not denote any order, quantity or importance, but are only used to distinguish different components. The terms "a" or "an" and the like do not denote a quantity limitation, but mean that there is at least one. The terms "comprising" or "including" and the like mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative position relationships, and when the absolute position of the object being described changes, the relative position relationships may also change accordingly.

[0061] The above are only the preferred embodiments of this application and are not used to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of this application shall be included within the protection scope of this application.

Claims

1. A spring tube pressure rapid detection device, characterized in that: It includes a base (1), on which there is an inflation structure (2) for inflating a bourdon tube, an installation structure (3) for fixing the bourdon tube is provided on the base (1), a dimension detection structure (4) is provided on the base (1), and the dimension detection structure (4) is used to detect the end displacement of the bourdon tube after inflation. The installation structure (3) includes a placement seat (32) and a locking assembly (33). The placement seat (32) is arranged on the base (1). The placement seat (32) is provided with a first placement block (322) and a second placement block (323). Both the first placement block (322) and the second placement block (323) are elastic. A first placement groove (324) is formed on the first placement block (322), and a second placement groove (325) is formed on the second placement block (323). When the bourdon 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 bourdon tube from disengaging from the first placement groove (324) or the second placement groove (325).

2. The quick spring tube pressure detection device according to claim 1, wherein: The installation structure (3) further includes an installation seat (31). The installation seat (31) is arranged on the base (1). An installation groove (311) is formed on the installation seat (31). The placement seat (32) is provided with an installation block (321). The installation block (321) is threadedly connected in the installation groove (311). When the bourdon tube is fixed in the placement seat (32), the installation block (321) can be threadedly connected in the installation groove (311).

3. A Bourdon tube pressure rapid detection device according to claim 1, characterized in that: 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 threaded connection of the locking bolt 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).

4. A bourdon tube pressure rapid detection device according to claim 3, characterized in that: A first sealing ring (35) is provided on the placement seat (32). The first sealing ring (35) is located in the first placement groove (324) and the second placement groove (325). The first sealing ring (35) is sleeved on the bourdon tube.

5. A Bourdon tube pressure rapid detection device according to claim 4, characterized in that: The installation structure (3) further includes a fixing seat (5). A receiving groove (51) for the placement seat (32) to be inserted is formed on the fixing seat (5). A fixing plate (53) for restricting the placement seat (32) from disengaging from the receiving groove (51) is slidably connected to the fixing seat (5). An elastic stop bar (54) is provided on the fixing seat (5). A stop block (541) is provided on the stop bar (54). A stop hole (534) for the stop block (541) to be inserted is formed on the fixing plate (53). When the stop block (541) is inserted into the stop hole (534), the fixing plate (53) is fixed to the fixing seat (5).

6. The quick spring tube pressure detection device according to claim 5, characterized in that: A linkage bar (551) is slidably connected to the placement base (32). The linkage bar (551) is located on the moving path of the stop block (541) inserting into the stop hole (534), and 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).

7. The quick spring tube pressure detection device according to claim 6, characterized in that: A linkage block (555) is provided on the linkage bar (551). The linkage block (555) is located on the side of the first sealing ring (35) away from the spring tube. A moving inclined surface (556) is formed on the linkage block (555). The distance between the moving inclined surface (556) and the spring tube gradually decreases in the direction from the fixed base (5) to the placement base (32). The first sealing ring (35) is located on the moving path of the moving inclined surface (556).

8. A bourdon tube pressure rapid detection device according to claim 7, characterized in that: A receiving block (52) for inserting into the receiving groove (51) is provided on the placement base (32). A corrugated pipe (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 corrugated pipe (521) abuts against the side wall of the receiving groove (51).

9. A method for rapid spring tube pressure detection, the detection method uses a spring tube pressure rapid detection device as described in any one of claims 1-8, 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. Seal the sealed end of the spring tube by welding, and install the spring tube in the installation structure (3). Pressurize the spring tube through the inflation structure (2), and then detect the tube end displacement of the spring tube after inflation through the dimension detection structure (4); S3. Calculate the tube end displacement of the spring tube according to the known information through the formula. The formula is: Main parameters of the bourdon tube: , Total displacement of pipe end: , Radial displacement: , Axial displacement: , In the formula, W is the total tube end displacement of the spring tube; γ is the forming angle of the spring tube; Δγ is the deflection angle of the spring tube after being pressurized; P is the measured pressure; Μ is the Poisson's 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 major axis of the spring tube; b is half of the minor axis of the spring tube; α, β are 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 pressurization.

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