High-temperature-resistant pneumatic meter clamping device

Abstract

The utility model discloses a high-temperature-resistant pneumatic meter clamping device, which relates to the technical field of workpiece clamping and grabbing, and adopts the technical scheme that the high-temperature-resistant pneumatic meter clamping device comprises a guide pipe, a rear connecting pipe and a mounting base, an air cylinder is arranged on the guide pipe, a manual valve is arranged on one side of the guide pipe, and a telescopic pipe is arranged at the air end of the air cylinder; a connecting pipe is arranged in front of the telescopic pipe, a connecting flange is arranged on the outer side of the connecting pipe, and a fixing assembly used for fixing an external pipeline needing to be measured is arranged on the outer side of the connecting flange. Therefore, even if the bolts between the connecting flanges expand under the action of high temperature, the position of the external pipeline cannot be changed under the clamping of the fixing assembly, and the high-temperature-resistant ceramic fiber gaskets are arranged at the joints of the connecting flanges and the outer side connecting pipe, so that the sealing performance of the pipeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping and grabbing, and more specifically, to a high-temperature resistant pneumatic meter clamp. Background Art

[0002] Pneumatic meter clamp is one of the main supporting products of flow calibration device. It is used to clamp the meter to be tested during the instrument calibration process. The structural principle of pneumatic meter clamp is mainly composed of flange, sealing gasket, piston body, gland, pressure ring, cylinder front cover, cylinder body, cylinder rear cover, O-ring and two-position four-way reversing valve. Pneumatic meter clamp has the characteristics of simple structure, convenient operation and reliable performance. All parts contacting liquid medium can be made of stainless steel. Pneumatic meter clamp is installed on the test pipe section of the flow measurement standard device to clamp the flow meter to be tested, and can adjust the gap according to the length of the meter.

[0003] In the process of achieving accurate measurement of high-temperature gas through high-temperature gas real-flow calibration, since the connecting pipes are connected by flanges, and the flanges are fastened by bolts, the bolts will expand slightly under the action of high-temperature gas, which will cause the connection between the pipes to loosen, and the high-temperature gas may leak out, resulting in errors in the measurement results.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a high temperature resistant pneumatic meter clamp. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a high temperature resistant pneumatic meter clamp.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant pneumatic meter clamp, comprising a guide tube, a rear pipe and a mounting base, a cylinder is arranged on the guide tube, a manual valve is arranged on one side of the guide tube, a telescopic tube is arranged at the gas end of the cylinder, a connecting tube is arranged in front of the telescopic tube, a connecting flange is arranged on the outside of the connecting tube, and a fixing component for fixing an external pipeline to be measured is arranged on the outside of the connecting flange.

[0007] Preferably, a high temperature resistant ceramic fiber gasket is provided at the connection between the connecting flange and the outer connecting pipe.

[0008] Preferably, the fixing assembly includes a mounting plate, the inner wall of which is arranged in a circular shape with a plurality of fixing plates evenly distributed thereon, a connecting block is arranged on the side of the fixing plate facing the inner side of the mounting plate, and the connecting block passes through the mounting plate, the other side of the fixing plate is in an arc shape, and a high-temperature resistant ceramic fiber gasket is arranged inside, a mounting chassis is arranged inside the mounting plate, and a control mechanism for controlling the opening and closing of the fixing plate is arranged on the mounting chassis.

[0009] Preferably, a raised portion is provided above the mounting plate, a circular cavity is provided on the mounting chassis, and a second limiting groove penetrating the mounting turntable and the mounting chassis is provided in the cavity.

[0010] Preferably, the control mechanism includes a first gear arranged on a mounting chassis, one end of a threaded rod is provided at the axis of the first gear, and the threaded rod passes through the mounting plate, a handle is provided at the other end of the threaded rod, the first gear is meshingly connected with a second gear, a plurality of first limiting grooves are provided on the second gear, a sliding column is slidably connected in the first limiting groove, and a connecting block is provided at the end of the sliding column.

[0011] Preferably, the connecting block is arranged in the second limiting groove and slides in the second limiting groove, and the fixing plate is arranged at the end of the connecting block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, by setting a fixing assembly, turning the handle, the threaded rod is brought to the control mechanism to move the fixing plate, so as to fix the pipeline to be measured outside. The advantage is that even if the bolts between the connecting flanges expand under high temperature, the position of the external pipeline will not change under the clamping of the fixing assembly, so that the sealing of the pipeline is guaranteed, which solves the problem of loose connection between pipelines caused by the expansion of the bolts between the connecting flanges under high temperature in the background technology;

[0014] 2. In the present invention, high temperature resistant ceramic fiber gaskets are arranged at the fixing plate and the connecting flange. This has the advantage of effectively isolating the high temperature gas from affecting the connection, making the connection between the pipes and the connection between the fixing plate and the external pipe more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a right view structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first gear and the second gear in the utility model;

[0019] Figure 4It is a structural schematic diagram of installing the chassis in the utility model.

[0020] 1. Mounting base; 2. Cylinder; 3. Connecting pipe; 4. Telescopic pipe; 5. Connecting flange; 6. Mounting plate; 7. Handle; 71. Mounting chassis; 72. First gear; 73. Second gear; 74. Sliding column; 75. First limiting groove; 8. Cavity; 9. Connecting block; 10. Second limiting groove; 11. Fixing plate; 12. Guide pipe; 13. Rear connecting pipe; 14. Manual valve; 15. Threaded rod. DETAILED DESCRIPTION

[0021] like Figure 1-4 As shown, the utility model provides a high temperature resistant pneumatic meter clamp, including a guide tube 12, a rear pipe 13 and a mounting base 1, a cylinder 2 is arranged on the guide tube 12, a manual valve 14 is arranged on one side of the guide tube 12, a telescopic tube 4 is arranged at the gas end of the cylinder 2, a connecting tube 3 is arranged in front of the telescopic tube 4, a connecting flange 5 is arranged on the outside of the connecting tube 3, and a fixing component for fixing an external pipeline to be measured is arranged on the outside of the connecting flange 5.

[0022] The fixing assembly includes a mounting disk 6, the inner wall of which is evenly distributed in a circular shape with a plurality of fixing plates 11, a connecting block 9 is provided on the side of the fixing plate 11 facing the inner side of the mounting disk 6, and the connecting block 9 penetrates the mounting disk 6, the other side of the fixing plate 11 is in an arc shape, and high-temperature resistant ceramic fiber gaskets are provided at the connection between the connecting flange 5 and the outer pipe and in one side of the arc shape of the fixing plate, a mounting chassis 71 is provided in the mounting disk 6, and a control mechanism for controlling the opening and closing of the fixing plate 11 is provided on the mounting chassis 71.

[0023] A raised portion is provided above the mounting plate 6 , a circular cavity 8 is provided on the mounting base 71 , and a second limiting groove 10 penetrating the mounting plate and the mounting base 71 is provided in the cavity 8 .

[0024] The control mechanism includes a first gear 72 arranged on the mounting chassis 71, one end of a threaded rod 15 is provided at the axis of the first gear 72, and the threaded rod 15 passes through the mounting plate, and a handle 7 is provided at the other end of the threaded rod 15. The first gear 72 is meshingly connected with the second gear 73, and a plurality of first limiting grooves 75 are opened on the second gear 73. A sliding column 74 is slidably connected in the first limiting groove 75, and a connecting block 9 is provided at the end of the sliding column 74. The connecting block 9 is arranged in the second limiting groove 10 and slides in the second limiting groove 10, and a fixing plate 11 is arranged at the end of the connecting block 9.

[0025] The cylinder 2 is extended and retracted to lead the telescopic tube 4 to extend and retract to reach the required length, and the external pipe is inserted into the mounting plate 6 to contact the connecting flange 5, and then fixed by bolts, and then the threaded rod 15 is rotated so that the fixing plate 11 fixes the external pipe.

[0026] Working principle: install the guide tube 12 on the mounting base 1, then the cylinder 2 extends the telescopic tube 4 to a suitable length by telescoping, and then inserts the external pipe into the mounting plate 6 to contact the connecting flange 5, and then the staff holds the handle 7 and rotates the threaded rod 15, the threaded rod 15 drives the first gear 72 to rotate, and then the first gear 72 drives the second gear 73 meshing with it to rotate, with the rotation of the second gear 73, the sliding column 74 in the first limiting groove 75 starts to move therein, because the connecting block 9 connected to the bottom of the sliding column 74 is in the second limiting groove 10 in the mounting chassis 71, and with the rotation of the second gear 73, the fixing plate 11 will slowly move toward the external pipe, and then the fixing plate 11 fixes the external pipe, so that even if the bolts on the connecting flange 5 expand and loosen, they will still remain stable under the clamping of the fixing plate 11, thereby not affecting the normal progress of the measurement work.

[0027] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A high temperature resistant pneumatic meter clamp, comprising a guide tube (12), a rear pipe (13) and a mounting base (1), characterized in that: The guide tube (12) is provided with a cylinder (2), one side of the guide tube (12) is provided with a manual valve (14), the gas end of the cylinder (2) is provided with a telescopic tube (4), a connecting tube (3) is provided in front of the telescopic tube (4), a connecting flange (5) is provided on the outside of the connecting tube (3), and a fixing component for fixing an external pipeline to be measured is provided on the outside of the connecting flange (5).

2. The high temperature resistant pneumatic meter clamp according to claim 1, characterized in that: A high temperature resistant ceramic fiber gasket is provided at the connection point between the connection flange (5) and the outer connecting pipe.

3. The high temperature resistant pneumatic meter clamp according to claim 1, characterized in that: The fixing assembly comprises a mounting plate (6), the inner wall of the mounting plate (6) being evenly distributed in a circular shape with a plurality of fixing plates (11), a connecting block (9) being arranged on one side of the fixing plate (11) facing the inner side of the mounting plate (6), and the connecting block (9) passing through the mounting plate (6), the other side of the fixing plate (11) being in an arc shape and having a high temperature resistant ceramic fiber gasket arranged therein, a mounting chassis (71) being arranged inside the mounting plate (6), and a control mechanism for controlling the opening and closing of the fixing plate (11) being arranged on the mounting chassis (71).

4. The high temperature resistant pneumatic meter clamp according to claim 3, characterized in that: A raised portion is provided above the mounting plate (6), a circular cavity (8) is provided on the mounting chassis (71), and a second limiting groove (10) penetrating the mounting plate and the mounting chassis (71) is provided in the cavity (8).

5. The high temperature resistant pneumatic meter clamp according to claim 3, characterized in that: The control mechanism comprises a first gear (72) arranged on a mounting chassis (71); one end of a threaded rod (15) is arranged at the axis of the first gear (72), and the threaded rod (15) passes through the mounting plate; a handle (7) is arranged at the other end of the threaded rod (15); the first gear (72) is meshingly connected with a second gear (73); a plurality of first limiting grooves (75) are provided on the second gear (73); a sliding column (74) is slidably connected in the first limiting groove (75); a connecting block (9) is arranged at the end of the sliding column (74).

6. The high temperature resistant pneumatic meter clamp according to claim 5, characterized in that: The connecting block (9) is arranged in the second limiting groove (10) and slides in the second limiting groove (10), and the fixing plate (11) is arranged at the end of the connecting block (9).

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