A high temperature resistant and vibration resistant vortex flowmeter

Abstract

The present invention relates to a high temperature resistant and vibration resistant vortex flowmeter applied in the field of flow detection equipment, comprising a hollow sealing ring; the hollow sealing ring is a ring body with a cavity inside, and a plurality of heating auxiliary sealing components and cooling auxiliary sealing components are installed in the hollow sealing ring and are evenly and staggeredly distributed along the hollow sealing ring; the expansion amplitude of the heating auxiliary sealing component when heating up and the stretching amplitude of the cooling auxiliary sealing component when cooling down are both greater than the deformation amplitude of the hollow sealing ring affected by temperature, and the above-mentioned hollow sealing ring, heating auxiliary sealing component and cooling auxiliary sealing component and other structures are adopted to achieve interference fit between the two ends and the inner and outer sides of the hollow sealing ring with the inner wall of the flange structure regardless of high temperature environment or low temperature environment, thereby ensuring that the hollow sealing ring can ensure good sealing effect during or when the temperature changes, avoiding the measurement pipeline and the external transmission pipeline.

Description

Technical Field

[0001] The invention relates to a vortex flowmeter, in particular to a high temperature resistant and vibration resistant vortex flowmeter applied in the field of flow detection equipment. Background Art

[0002] Vortex flowmeter is a volume flowmeter that measures the volume flow rate, standard volume flow rate or mass flow rate of gas, steam or liquid based on the Karman vortex principle. It is mainly used for flow measurement of industrial pipeline medium fluids, such as gas, liquid, steam and other media.

[0003] In order to solve the problem that traditional high-temperature vortex flowmeters are not convenient for measuring medium temperature, a certain vortex flowmeter on the market adopts the design of measuring sensor and connecting rod, which has a certain market share.

[0004] The specification of Chinese patent CN 211651700U discloses a vortex flowmeter capable of measuring ultra-high temperature, comprising a display instrument and an insulated body of the flowmeter, a measuring sensor is arranged on the upper side of the insulated body of the flowmeter, the lower end of the measuring sensor is inserted into the insulated body of the flowmeter, a sleeve on the measuring sensor is provided with a limit insulation pad, a support rod nut is arranged on the outer side of the limit insulation pad, the lower side of the support rod nut is screwed with the insulated body of the flowmeter by a thread, a support rod is arranged on the upper side of the support rod nut, the upper end of the support rod is fixedly connected to a junction box by a screw, and a connecting rod is arranged inside the support rod. When the vortex flowmeter capable of measuring ultra-high temperature is used, the medium passing through the insulated body of the flowmeter is measured at high temperature by the measuring sensor, and the medium is transmitted to the display instrument for display through the connecting rod and the junction box, so that the vortex flowmeter can measure a variety of data when in use, thereby making the vortex flowmeter more widely used.

[0005] In actual use, when installing the vortex flowmeter, try to avoid installing the sensor on a pipeline with strong vibration, especially lateral vibration. If it is necessary to install it, vibration reduction measures must be taken, and pipeline fastening devices must be installed 2D upstream and downstream of the sensor, and anti-vibration pads must be added.

[0006] The measuring pipe of the vortex flowmeter and the medium conveying pipe are usually connected by a flange structure and sealed by setting a sealing ring. However, in actual use, the measurement temperature range of the vortex flowmeter is relatively large (the vortex flowmeter uses a piezoelectric stress sensor with high reliability and can operate in the operating temperature range of -20℃ to +250℃). Due to the different materials of the pipe and the sealing ring, the expansion coefficients and expansion speeds of the two are different. When measuring media with large temperature differences, gaps may occur at the joints of the pipes due to thermal expansion and contraction, resulting in medium leakage, and severe safety accidents. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to provide a high-temperature resistant and vibration-resistant vortex flowmeter that can adapt to different temperature changes and always maintain a good sealing effect, so as to adapt to the measurement needs of media with different temperatures and ensure the safety of the flow measurement operation process.

[0008] In order to solve the above problems, the present invention provides a high temperature resistant and vibration resistant vortex flowmeter, comprising a measuring pipe and a converter, wherein the converter is fixedly connected above the measuring pipe through a connecting rod;

[0009] Both ends of the measuring pipe are provided with flange structures, the ends of the flange structures are provided with grooves, and the grooves are plugged with hollow sealing rings;

[0010] The hollow sealing ring is a ring body with a cavity inside, and a plurality of heating auxiliary sealing components and cooling auxiliary sealing components are installed in the hollow sealing ring and are evenly and staggeredly distributed along the hollow sealing ring;

[0011] The heating auxiliary sealing component expands and presses against the two ends of the hollow sealing ring and the inner walls on both sides when the temperature rises, so that the two ends of the hollow sealing ring are interference-fitted with the inner wall of the flange structure, and the inner and outer sides of the hollow sealing ring are interference-fitted with the inner and outer side walls of the flange structure;

[0012] The cooling auxiliary sealing component stretches and presses against the two ends of the hollow sealing ring and the inner walls on both sides when cooling, so that the two ends of the hollow sealing ring are interference fit with the inner wall of the flange structure, and the inner and outer sides of the hollow sealing ring are interference fit with the inner and outer side walls of the flange structure;

[0013] The expansion amplitude of the heating auxiliary sealing component when the temperature rises and the stretching amplitude of the cooling auxiliary sealing component when the temperature falls are both greater than the deformation amplitude of the hollow sealing ring affected by temperature.

[0014] In the above-mentioned high temperature resistant and vibration resistant vortex flowmeter, a hollow sealing ring is used to ensure the sealing between the measuring pipe and the external delivery pipe;

[0015] When the temperature rises, the heating auxiliary sealing component expands and presses against the two ends of the hollow sealing ring and the inner walls on both sides, so that the two ends of the hollow sealing ring are interference-fitted with the inner wall of the flange structure, and the inner and outer sides of the hollow sealing ring are interference-fitted with the inner and outer side walls of the flange structure;

[0016] When the temperature drops, the cooling auxiliary sealing component stretches and presses against the two ends of the hollow sealing ring and the inner walls on both sides, so that the two ends of the hollow sealing ring are interference fit with the inner wall of the flange structure, and the inner and outer sides of the hollow sealing ring are interference fit with the inner and outer side walls of the flange structure;

[0017] In this way, both ends of the hollow sealing ring are interference fit with the inner wall of the flange structure regardless of whether the temperature is rising or falling, and the inner and outer sides of the hollow sealing ring are interference fit with the inner and outer side walls of the flange structure, thereby ensuring that the hollow sealing ring can ensure a good sealing effect during or when the temperature changes, avoiding the measurement pipeline and the external delivery pipeline.

[0018] As a further supplement to the present application, the heating auxiliary sealing assembly includes a first expansion body, the first expansion body includes a first stop block and a first spring, two first stops are provided and are symmetrically distributed, the two first stops are respectively abutted against the inner walls at both ends of the hollow sealing ring, and the two ends of the first spring are respectively fixed to the side walls on the side close to each other of the two first stops.

[0019] As a further supplement to the present application, the heating auxiliary sealing assembly also includes a second expansion body, which includes a second stop block and a second spring. Two second stops are provided and are symmetrically distributed. The two second stops are respectively abutted against the inner walls on both sides of the hollow sealing ring. The two ends of the second spring are respectively fixed to the side walls on the side close to each other of the two second stops.

[0020] As a further supplement to the present application, the side of the first abutment block abutting against the hollow sealing ring is an outwardly convex arc surface, the side of the second abutment block abutting against the hollow sealing ring is an inwardly concave arc surface, and the arc surface of the second abutment block is consistent with the curvature of the inner wall of the hollow sealing ring;

[0021] The peripheries of the surfaces of the first and second abutting blocks in contact with the hollow sealing ring are both provided with rounded corners.

[0022] As a further supplement to the present application, the cooling auxiliary sealing assembly includes a first cooling abutting member, and the first cooling abutting member includes:

[0023] Two movable abutment plates are provided and respectively abut against the inner walls on both sides of the hollow sealing ring;

[0024] Linkage plates, two of which are also provided and are located between the two movable abutment plates;

[0025] Connecting piece, the connecting piece is used to connect the movable abutment plate and the linkage plate, and there are two groups of connecting pieces, each of which is composed of two supporting rods;

[0026] The movable abutment plate on the left is fixed to the linkage plate on the right through one set of support rods, and one set of support rods slides through the linkage plate on the left;

[0027] The movable abutment plate on the right is fixed to the linkage plate on the left through another set of support rods, and the other set of support rods slides through the linkage plate on the right;

[0028] A tension spring is located between the two linkage plates and both ends of the tension spring are respectively fixed to the side walls of the two linkage plates on one side close to each other.

[0029] As a further supplement to the present application, the cooling auxiliary sealing assembly also includes a second cooling abutment, which has the same structure as the first cooling abutment, and both ends of the second cooling abutment are respectively abutted against the inner walls on both sides of the hollow sealing ring.

[0030] As another improvement of the present application, a limiting member is fixedly installed on the inner wall of the hollow sealing ring, and the corresponding structures of the first stop block, the second stop block, the movable stop plate, the linkage plate and the second cooling stop member are provided with limiting holes adapted to the limiting member, and the corresponding structures of the first stop block, the second stop block, the movable stop plate, the linkage plate and the second cooling stop member are restricted in movement direction by the limiting holes and the limiting member during movement and will not separate from the limiting member.

[0031] As another improved supplement of the present application, the limiting member includes a first limiting column and a second limiting column, and the first limiting column is slidably plugged with the limiting hole on the first stop block, the limiting hole on the movable stop plate, and the limiting hole on the linkage plate;

[0032] The second limiting column is slidably plugged with the limiting hole on the second abutment block and the limiting hole on the corresponding structure on the second cooling abutment member corresponding to the movable abutment plate and the linkage plate.

[0033] In summary, the hollow sealing ring is used to ensure the sealing between the measuring pipe and the external delivery pipe;

[0034] When the temperature of the medium to be measured in the measuring pipeline is high, as the temperature of the measuring pipeline rises, the first spring is deformed and extended, so that the two first abutments respectively abut and push the two end side walls of the hollow sealing ring, so that the two end side walls of the hollow sealing ring are always in interference fit with the inner side wall of the flange structure; at the same time, the second spring is deformed and extended, so that the two second abutments respectively abut and push the inner and outer side walls of the hollow sealing ring, so that the inner and outer side walls of the hollow sealing ring are always in interference fit with the inner and outer side walls of the flange structure; in this way, the hollow sealing ring can always be in interference fit with the flange structure in a high temperature environment, thereby ensuring the sealing effectiveness under high temperature conditions;

[0035] When the temperature of the medium to be measured in the measuring pipe is low, as the temperature of the measuring pipe decreases, the tension spring deforms and contracts, so that the two linkage plates approach each other and drive the two movable abutment plates to move away from each other, so that the movable abutment plates respectively abut and push the two end side walls of the hollow sealing ring, so that the two end side walls of the hollow sealing ring are always in interference fit with the inner side wall of the flange structure; at the same time, the second cooling abutment member undergoes a deformation similar to that of the first cooling abutment member, so that the inner and outer side walls of the hollow sealing ring are always in interference fit with the inner and outer side walls of the flange structure; in this way, the hollow sealing ring can always be in interference fit with the flange structure in a low temperature environment, thereby ensuring the sealing effectiveness under low temperature conditions;

[0036] In this way, both ends of the hollow sealing ring are interference fit with the inner wall of the flange structure regardless of whether the temperature is rising or falling, and the inner and outer sides of the hollow sealing ring are interference fit with the inner and outer side walls of the flange structure, thereby ensuring that the hollow sealing ring can ensure a good sealing effect during or when the temperature changes, avoiding the measurement pipeline and the external delivery pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;

[0038] Figure 2 This is a partial cross-sectional view of the first embodiment of the present application when the measuring pipe is connected to the delivery pipe;

[0039] Figure 3 This is a cross-sectional view of a hollow sealing ring according to the first embodiment of the present application;

[0040] Figure 4 This is a schematic structural diagram of a temperature-raising auxiliary sealing assembly according to the first embodiment of the present application;

[0041] Figure 5 This is a schematic structural diagram of a cooling auxiliary sealing assembly according to the first embodiment of the present application;

[0042] Figure 6 A partial cross-sectional view of a hollow sealing ring according to a second embodiment of the present application;

[0043] Figure 7 This is a schematic structural diagram of a temperature-raising auxiliary sealing assembly according to a second embodiment of the present application;

[0044] Figure 8 This is a schematic structural diagram of a cooling auxiliary sealing assembly according to a second embodiment of the present application;

[0045] Fig. 9 This is a partial cross-sectional view of the third embodiment of the present application when the measuring pipe is connected to the conveying pipe.

[0046] Description of the numbers in the figure:

[0047] 1. Measuring pipeline; 11. Flange structure; 2. Converter; 3. Connecting rod; 4. Hollow sealing ring; 5. Heating auxiliary sealing assembly; 51. First expansion body; 511. First stop block; 512. First spring; 52. Second expansion body; 521. Second stop block; 522. Second spring; 6. Cooling auxiliary sealing assembly; 61. First cooling stop member; 611. Movable stop plate; 612. Linkage plate; 613. Support rod; 614. Tension spring; 62. Second cooling stop member; 7. Limiting hole; 8. Limiting member; 81. First limiting column; 82. Second limiting column. DETAILED DESCRIPTION

[0048] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0049] The first implementation method:

[0050] The present invention provides a high temperature resistant and vibration resistant vortex flowmeter, please refer to Figure 1-Figure 2 , comprising a measuring pipe 1 and a converter 2, wherein the converter 2 is fixedly connected above the measuring pipe 1 through a connecting rod 3;

[0051] Both ends of the measuring pipe 1 are provided with flange structures 11, and the ends of the flange structure 11 are provided with grooves, and the grooves are plugged with hollow sealing rings 4;

[0052] The hollow sealing ring 4 is a ring body with a cavity inside, and a plurality of heating auxiliary sealing components 5 and cooling auxiliary sealing components 6 are installed in the hollow sealing ring 4 and are evenly and staggeredly distributed along the hollow sealing ring 4;

[0053] The heating auxiliary sealing component 5 expands and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring 4 when the temperature rises, so that the two ends of the hollow sealing ring 4 are interference-fitted with the inner wall of the flange structure 11, and the inner and outer sides of the hollow sealing ring 4 are interference-fitted with the inner and outer side walls of the flange structure 11;

[0054] The cooling auxiliary sealing assembly 6 stretches and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring 4 during cooling, so that the two ends of the hollow sealing ring 4 are interference-fitted with the inner wall of the flange structure 11, and the inner and outer sides of the hollow sealing ring 4 are interference-fitted with the inner and outer side walls of the flange structure 11;

[0055] The expansion amplitude of the temperature-raising auxiliary sealing component 5 when the temperature is raised and the stretching amplitude of the temperature-lowering auxiliary sealing component 6 when the temperature is lowered are both greater than the deformation amplitude of the hollow sealing ring 4 affected by temperature.

[0056] Based on the above structure, a hollow sealing ring 4 is used to ensure the sealing between the measuring pipe 1 and the external delivery pipe;

[0057] When the temperature rises (or is relatively high), the temperature-raising auxiliary sealing assembly 5 expands and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring 4, so that the two ends of the hollow sealing ring 4 are interference-fitted with the inner wall of the flange structure 11, and the inner and outer sides of the hollow sealing ring 4 are interference-fitted with the inner and outer side walls of the flange structure 11;

[0058] When the temperature is reduced (or low), the cooling auxiliary sealing assembly 6 stretches and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring 4, so that the two ends of the hollow sealing ring 4 are interference fit with the inner wall of the flange structure 11, and the inner and outer sides of the hollow sealing ring 4 are interference fit with the inner and outer side walls of the flange structure 11;

[0059] In this way, both ends of the hollow sealing ring 4 are interference fit with the inner wall of the flange structure 11, and the inner and outer sides of the hollow sealing ring 4 are interference fit with the inner and outer side walls of the flange structure 11, regardless of whether the temperature is increased (high temperature) or decreased (low temperature). This ensures that the hollow sealing ring 4 can ensure a good sealing effect during or when the temperature changes, avoiding the measurement pipeline 1 and the external delivery pipeline.

[0060] Figure 3-Figure 4 It is shown that the temperature-raising auxiliary sealing assembly 5 includes a first expansion body 51, and the first expansion body 51 includes a first stop block 511 and a first spring 512. The first spring 512 is a spring made of memory metal material that can stretch when the temperature rises. Two first stops 511 are provided and symmetrically distributed. The two first stops 511 are respectively abutted against the inner walls at both ends of the hollow sealing ring 4, and the two ends of the first spring 512 are respectively fixed to the side walls on the side close to each other of the two first stops 511.

[0061] The heating auxiliary sealing assembly 5 also includes a second expansion body 52, which includes a second stop block 521 and a second spring 522. The second spring 522 is also made of a memory metal material and can stretch when the temperature rises. Two second stops 521 are provided and symmetrically distributed. The two second stops 521 are respectively abutted against the inner walls on both sides of the hollow sealing ring 4. The two ends of the second spring 522 are respectively fixed to the side walls on the side close to each other of the two second stops 521.

[0062] When the temperature of the medium to be measured in the measuring pipe 1 is high, as the temperature of the measuring pipe 1 rises, the first spring 512 is deformed and elongated, so that the two first blocks 511 respectively press and push the two end side walls of the hollow sealing ring 4, so that the two end side walls of the hollow sealing ring 4 are always in interference fit with the inner wall of the flange structure 11; at the same time, the second spring 522 is deformed and elongated, so that the two second blocks 521 respectively press and push the inner and outer side walls of the hollow sealing ring 4, so that the inner and outer side walls of the hollow sealing ring 4 are always in interference fit with the inner and outer side walls of the flange structure 11; in this way, the hollow sealing ring 4 can always be in interference fit with the flange structure 11 in a high temperature environment, thereby ensuring the sealing effectiveness under high temperature conditions.

[0063] Figure 4 It is shown that the side of the first stopper 511 abutting against the hollow sealing ring 4 is an outwardly convex arc surface, and the side of the second stopper 521 abutting against the hollow sealing ring 4 is an inwardly concave arc surface, and the arc surface of the second stopper 521 is consistent with the curvature of the inner wall of the hollow sealing ring 4;

[0064] The first stopper 511 and the second stopper 521 are both provided with rounded corners around the surfaces in contact with the hollow sealing ring 4 .

[0065] It can ensure that the hollow sealing ring 4 can be adaptively deformed in a high temperature environment, and can avoid the phenomenon of excessive local pressure on the hollow sealing ring 4 during deformation, thereby ensuring that the hollow sealing ring 4 will not be damaged due to deformation.

[0066] Figure 3 and Figure 5 The cooling auxiliary sealing assembly 6 is shown to include a first cooling abutment 61, and the first cooling abutment 61 includes:

[0067] Two movable abutment plates 611 are provided and respectively abut against the inner walls on both sides of the hollow sealing ring 4;

[0068] Linkage plates 612, two linkage plates 612 are also provided and are located between the two movable abutment plates 611;

[0069] Connecting piece, the connecting piece is used to connect the movable abutment plate 611 and the linkage plate 612, and two groups of connecting pieces are provided, and the two groups of connecting pieces are respectively composed of two supporting rods 613;

[0070] The movable stop plate 611 on the left is fixed to the linkage plate 612 on the right through one set of support rods 613, and one set of support rods 613 slides through the linkage plate 612 on the left;

[0071] The movable abutment plate 611 on the right is fixed to the linkage plate 612 on the left through another set of support rods 613, and the other set of support rods 613 slides through the linkage plate 612 on the right;

[0072] A tension spring 614, which is a spring made of a memory metal material and can shrink when the temperature drops. The tension spring 614 is located between the two linkage plates 612 and has two ends respectively fixed to the side walls of the two linkage plates 612 on the sides close to each other.

[0073] The cooling auxiliary sealing assembly 6 also includes a second cooling abutting member 62 . The second cooling abutting member 62 has the same structure as the first cooling abutting member 61 . Both ends of the second cooling abutting member 62 abut against the inner side walls of the hollow sealing ring 4 at both sides.

[0074] When the temperature of the medium to be measured in the measuring pipe 1 is low, as the temperature of the measuring pipe 1 decreases, the tension spring 614 is deformed and contracts, so that the two linkage plates 612 are close to each other, and the two movable abutment plates 611 are driven away from each other, so that the movable abutment plates 611 respectively press and push the two end side walls of the hollow sealing ring 4, so that the two end side walls of the hollow sealing ring 4 are always in interference fit with the inner side wall of the flange structure 11; at the same time, the second cooling abutment 62 undergoes a deformation similar to that of the first cooling abutment 61, and the inner and outer side walls of the hollow sealing ring 4 are always in interference fit with the inner and outer side walls of the flange structure 11; in this way, the hollow sealing ring 4 can always be in interference fit with the flange structure 11 in a low temperature environment, thereby ensuring the sealing effectiveness under low temperature conditions.

[0075] Second implementation method:

[0076] Figure 6-Figure 8 Another high temperature resistant and vibration resistant vortex flowmeter is shown, which is different from Example 1 in that:

[0077] A limiting member 8 is fixedly installed on the inner wall of the hollow sealing ring 4, and the corresponding structures of the first stop block 511, the second stop block 521, the movable stop plate 611, the linkage plate 612 and the second cooling stop member 62 (that is, the same structures as the movable stop plate 611 and the linkage plate 612, the same below) are all provided with limiting holes 7 adapted to the limiting member 8. When moving, the first stop block 511, the second stop block 521, the movable stop plate 611, the linkage plate 612 and the corresponding structures of the second cooling stop member 62 are limited in movement direction by the limiting holes 7 and the limiting member 8 and will not separate from the limiting member 8.

[0078] The limiting member 8 includes a first limiting column 81 and a second limiting column 82. The first limiting column 81 is slidably plugged with the limiting hole 7 on the first stop block 511, the limiting hole 7 on the movable stop plate 611, and the limiting hole 7 on the linkage plate 612.

[0079] The second limiting column 82 is slidably plugged into the limiting hole 7 on the second abutment block 521 and the limiting hole 7 on the corresponding structure of the second cooling abutment member 62 corresponding to the movable abutment plate 611 and the linkage plate 612 .

[0080] Based on the above structure, when the corresponding structures of the first stop block 511, the second stop block 521, the movable stop plate 611, the linkage plate 612 and the second cooling stop member 62 move due to the extension or contraction of the first spring 512, the second spring 522 and the tension spring 614, it is ensured that the corresponding structures of the first stop block 511, the second stop block 521, the movable stop plate 611, the linkage plate 612 and the second cooling stop member 62 are always slidably connected to the first limiting column 81 or the second limiting column 82, so as to ensure that the above components will not deflect during the movement and play a good supporting role, and can ensure that the first expansion body 51, the second expansion body 52, the first cooling stop member 61 and the second cooling stop member 62 can be stably installed in the hollow sealing ring 4, avoiding the loss of support due to the movement of each component.

[0081] The third implementation method:

[0082] Fig. 9 Another high temperature resistant and vibration resistant vortex flowmeter is shown, which is different from Example 1 or Example 2 in that: a notch is opened on the inner side of the flange structure 11, and a hollow sealing ring 4 is padded in the notch, and when the hollow sealing ring 4 is located between the two flange structures 11, it provides a lateral support for the two flange structures 11, so that the hollow sealing ring 4 can not only provide a sealing effect between the measuring pipeline 1 and the external delivery pipeline, but also have a certain lateral shock absorbing effect, thereby improving the detection accuracy of the high temperature resistant and vibration resistant vortex flowmeter.

[0083] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A high temperature resistant and vibration resistant vortex flowmeter, comprising a measuring pipe (1) and a converter (2), wherein the converter (2) is fixedly connected to the upper part of the measuring pipe (1) via a connecting rod (3), characterized in that: Both ends of the measuring pipe (1) are provided with flange structures (11), the ends of the flange structure (11) are provided with grooves, and the grooves are plugged with hollow sealing rings (4); The hollow sealing ring (4) is a ring body with a cavity inside, and a plurality of heating auxiliary sealing components (5) and cooling auxiliary sealing components (6) are installed in the hollow sealing ring (4) and are evenly and staggeredly distributed inside the hollow sealing ring (4); The temperature-raising auxiliary sealing component (5) expands and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring (4) when the temperature rises, so that the two ends of the hollow sealing ring (4) are interference-fitted with the inner wall of the flange structure (11), and the inner and outer sides of the hollow sealing ring (4) are interference-fitted with the inner and outer side walls of the flange structure (11); The cooling auxiliary sealing component (6) stretches and presses against the two ends and the inner walls of the inner and outer sides of the hollow sealing ring (4) during cooling, so that the two ends of the hollow sealing ring (4) are interference-fitted with the inner wall of the flange structure (11), and the inner and outer sides of the hollow sealing ring (4) are interference-fitted with the inner and outer side walls of the flange structure (11); The expansion amplitude of the heating auxiliary sealing component (5) when the temperature rises and the stretching amplitude of the cooling auxiliary sealing component (6) when the temperature falls are both greater than the deformation amplitude of the hollow sealing ring (4) affected by temperature; The cooling auxiliary sealing assembly (6) comprises a first cooling abutting member (61), wherein the first cooling abutting member (61) comprises: A movable abutment plate (611), wherein two movable abutment plates (611) are provided and respectively abut against inner walls on both sides of the hollow sealing ring (4); A linkage plate (612), two of which are also provided and are located between the two movable abutment plates (611); A connecting piece, the connecting piece is used to connect the movable abutment plate (611) and the linkage plate (612), and two groups of the connecting pieces are provided, and the two groups of the connecting pieces are respectively composed of two support rods (613); The movable abutment plate (611) on the left side is fixed to the linkage plate (612) on the right side via one set of support rods (613), and one set of support rods (613) slides through the linkage plate (612) on the left side; The movable abutment plate (611) on the right side is fixed to the linkage plate (612) on the left side via another set of support rods (613), and the other set of support rods (613) slides through the linkage plate (612) on the right side; A tension spring (614), wherein the tension spring (614) is located between the two linkage plates (612) and has two ends respectively fixed to the side walls of the two linkage plates (612) on a side close to each other; The cooling auxiliary sealing assembly (6) further comprises a second cooling abutting member (62), the second cooling abutting member (62) having the same structure as the first cooling abutting member (61), and the two ends of the second cooling abutting member (62) respectively abut against the inner side walls on both sides of the hollow sealing ring (4).

2. A high temperature resistant and vibration resistant vortex flowmeter according to claim 1, characterized in that: The temperature-raising auxiliary sealing assembly (5) comprises a first expansion body (51), the first expansion body (51) comprising a first stop block (511) and a first spring (512), two first stop blocks (511) are provided and are symmetrically distributed, the two first stop blocks (511) respectively abut against the inner walls at both ends of the hollow sealing ring (4), and the two ends of the first spring (512) are respectively fixed to the side walls of the two first stop blocks (511) on the side close to each other.

3. A high temperature resistant and vibration resistant vortex flowmeter according to claim 2, characterized in that: The temperature-raising auxiliary sealing assembly (5) further comprises a second expansion body (52), wherein the second expansion body (52) comprises a second stop block (521) and a second spring (522), wherein two second stop blocks (521) are provided and are symmetrically distributed, wherein the two second stop blocks (521) respectively abut against inner walls on both sides of the hollow sealing ring (4), and the two ends of the second spring (522) are respectively fixed to the side walls on the side close to each other of the two second stop blocks (521).

4. A high temperature resistant and vibration resistant vortex flowmeter according to claim 3, characterized in that: The side of the first stop block (511) that contacts the hollow sealing ring (4) is an outwardly convex arc-shaped surface, and the side of the second stop block (521) that contacts the hollow sealing ring (4) is an inwardly concave arc-shaped surface, and the arc-shaped surface of the second stop block (521) is consistent with the curvature of the inner wall of the hollow sealing ring (4); The peripheries of the surfaces of the first stop block (511) and the second stop block (521) that are in contact with the hollow sealing ring (4) are both provided with rounded corners.

5. A high temperature resistant and vibration resistant vortex flowmeter according to claim 4, characterized in that: A limiting member (8) is fixedly mounted on the inner wall of the hollow sealing ring (4); corresponding structures of the first stop block (511), the second stop block (521), the movable stop plate (611), the linkage plate (612) and the second cooling stop member (62) are provided with limiting holes (7) adapted to the limiting member (8); when the first stop block (511), the second stop block (521), the movable stop plate (611), the linkage plate (612) and the second cooling stop member (62) are moved, the limiting holes (7) and the limiting member (8) cooperate to limit the movement direction and will not separate from the limiting member (8).

6. A high temperature resistant and vibration resistant vortex flowmeter according to claim 5, characterized in that: The limiting member (8) comprises a first limiting column (81) and a second limiting column (82); the first limiting column (81) is slidably plugged into the limiting hole (7) on the first stop block (511), the limiting hole (7) on the movable stop plate (611), and the limiting hole (7) on the linkage plate (612); The second limiting column (82) is slidably plugged into the limiting hole (7) on the second stop block (521) and the limiting hole (7) on the corresponding structure on the second cooling stop member (62) corresponding to the movable stop plate (611) and the linkage plate (612).

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