Turbine flowmeter for fuel gas

Abstract

The utility model relates to the technical field of turbine flow meters, and discloses a turbine flow meter for fuel gas, which comprises a shell, a detection sensor is mounted at the top of the shell, flanges are mounted at the left end and the right end of the shell, and mounting seats are connected to the left side and the right side of the top and the bottom of the shell; the screw rod is screwed in the mounting seat, and pull rods are mounted on the inner sides of the outer ends of the hinge frames; and the inner inserting rods are inserted into the pull rods, annular grooves are formed in the outer sides of the inner inserting rods correspondingly, and clamping jaws are arranged at the outer ends of the hinge lugs correspondingly. According to the turbine flow meter for the fuel gas, by pressing an inner inserting rod, a hinge lug can be pushed to move through an annular groove, so that a clamping jaw can be closed, the inner inserting rod can be pushed to reset under the action of a spring, then the clamping jaw can be opened again, a pull rod is driven to move horizontally by rotating a screw rod, and a flange can be supported in an auxiliary mode; and the vibration impact on the device is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of turbine flowmeters, and specifically relates to a turbine flowmeter for gas. Background Technique

[0002] A turbine flowmeter for gas is a precision instrument used to measure gas flow. It calculates the flow by detecting the gas flow passing through the turbine blades. When the gas passes through the sensor of the flowmeter, it will push the turbine blades to rotate, and this rotation action is proportional to the volumetric flow of the gas. The rotation of the turbine blades is transmitted to the counting device through a mechanical or magnetic coupling mechanism, thereby recording the volume of gas passing through.

[0003] Common turbine flowmeters are composed of a housing, a sensor, a worm wheel, flanges, and rectifying vanes. When in use, they are connected to the pipeline through the flanges on the left and right sides. However, in this way, since bolts and nuts are required for fastening between the flanges during assembly, the bolted connection may gradually become loose due to the vibration of the pipeline or the flowmeter itself during use, and temperature changes will cause the material to expand or contract, affecting the fastening state of the bolts, which may easily lead to a decrease in the sealing performance of the flowmeter, and further affect the detection accuracy of the flowmeter, and cannot meet the working requirements of the turbine flowmeter. Therefore, a turbine flowmeter for gas is proposed. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a turbine flowmeter for gas to solve the technical problem that the bolted connection may gradually become loose due to the vibration of the pipeline or the flowmeter itself during use, which may easily lead to a decrease in the sealing performance of the flowmeter.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions: A turbine flowmeter for gas, comprising:

[0008] A housing, a detection sensor is installed on the top of the housing, flanges are installed at both the left and right ends of the housing, and mounting seats are connected to the upper and lower left and right sides of the top of the housing;

[0009] A screw rod, which is screwed inside the mounting seat, ball bearings are sleeved on the outer ends of the screw rod, hinge frames are connected to the upper and lower sides of the outer sides of the ball bearings, pull rods are installed on the inner sides of the outer ends of the hinge frames, and the outer ends of the pull rods penetrate through the corresponding positions on the upper and lower sides of the inside of the flange;

[0010] The insertion rod is inserted inside the pull rod. Annular grooves are formed on the outer sides of the insertion rod. Connecting frames are circumferentially installed inside the annular grooves. Hinged ears are installed at the outer ends of the connecting frames through bearings, and claw jaws are installed at the outer ends of the hinged ears.

[0011] Preferably, screw holes are formed at the four corners inside the flange. The flanges are assembled through bolts and the screw holes. Sealing rings are clamped inside the flanges, improving the sealing performance of the housing.

[0012] Preferably, the number of the connecting frames, hinged ears and claw jaws is 3 - 6 groups, improving the stability of the support for the flange. Through grooves are formed at positions on the outer part of the pull rod corresponding to the claw jaws.

[0013] Preferably, guide rods are coaxially connected to the outer ends of the insertion rod. Springs are sleeved on the outer parts of the guide rods, facilitating the reset of the insertion rod. The left and right ends of the springs are respectively connected to the outer ends of the insertion rod and corresponding positions inside the cavity of the pull rod.

[0014] Preferably, the outer ends of the pull rods are tapered. The outer parts of the pull rods are threaded structures. Nuts are screwed on the middle positions of the outer parts of the pull rods. After the pull rod and the claw jaws tighten the flange, the nut can be rotated to clamp the flange.

[0015] Preferably, shift rods are welded to the outer parts of the nuts and the inner outer parts of the screw rods. The inner ends of the articulated frames are connected to corresponding positions of the outer rings of the ball bearings. The outer parts of the screw rods are connected to the inner rings of the ball bearings. The added ball bearings prevent interference between the screw rod and the articulated frame and the pull rod when the screw rod rotates.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides a gas turbine flowmeter, which has the following

[0018] beneficial effects:

[0019] For this gas turbine flowmeter, by pressing the insertion rod, the movement of the hinged ear can be promoted through the annular groove, so that the claw jaws can be closed, facilitating the connection between the pipeline and the flange. After the flange is assembled, when the insertion rod is released, the insertion rod can be pushed to reset under the action of the spring, and then the claw jaws can be reopened. By rotating the screw rod to drive the horizontal movement of the pull rod, the two flanges can be tightened. This not only improves the stability of the flange connection, but also makes the connection between the flange and the housing a whole through the pull rod and the screw rod, enabling auxiliary support for the flange, reducing the vibration impact on it, preventing the bolts inside the flange from loosening, improving the sealing performance of the flowmeter, preventing leakage problems caused by bolt loosening, and improving the detection accuracy of the flowmeter. Brief Description of the Drawings

[0020] Figure 1 This is a schematic structural diagram of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the flange of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the mounting seat and the pull rod of the present utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the pull rod of the present utility model;

[0024] Figure 5 This is a schematic structural diagram of the connecting frame and the hinge ear of the present utility model.

[0025] In the figure: 1. Outer shell; 2. Detection sensor; 3. Flange; 4. Mounting seat; 5. Sealing ring; 6. Screw; 7. Ball bearing; 8. Hinge frame; 9. Pull rod; 10. Nut; 11. Inner insertion rod; 12. Guide rod; 13. Annular groove; 14. Connecting frame; 15. Hinge ear; 16. Claw; 17. Spring. Detailed Description of the Preferred Embodiment

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] The present utility model provides a technical solution, a gas turbine flowmeter, including an outer shell 1, a detection sensor 2, a flange 3, a mounting seat 4, a sealing ring 5, a screw 6, a ball bearing 7, a hinge frame 8, a pull rod 9, a nut 10, an inner insertion rod 11, a guide rod 12, an annular groove 13, a connecting frame 14, a hinge ear 15, a claw 16 and a spring 17:

[0028] Please refer to Figure 1 , a detection sensor 2 is installed on the top of the outer shell 1, flanges 3 are installed at both the left and right ends of the outer shell 1, mounting seats 4 are connected to both the top and bottom and the left and right sides of the outer shell 1, screw holes are provided at the four corners inside the flange 3, and the flanges 3 are assembled through bolts and the screw holes. Please refer to Figure 2 , sealing rings 5 are clamped inside the flanges 3;

[0029] Please refer to Figure 3, the screw rod 6 is screwed inside the mounting seat 4. Ball bearings 7 are sleeved on the outer ends of the screw rod 6. Upper and lower sides of the outer sides of the ball bearings 7 are connected with hinge frames 8 respectively. Inner sides of the outer ends of the hinge frames 8 are respectively installed with pull rods 9, and outer ends of the pull rods 9 penetrate through corresponding positions on the upper and lower sides inside the flange 3;

[0030] Please refer to Figure 4 , the inner insertion rod 11 is inserted inside the pull rod 9. Annular grooves 13 are opened on the outer sides of the inner insertion rod 11. Please refer to Figure 5 , connecting frames 14 are installed circumferentially inside the annular grooves 13. Hinge ears 15 are installed at the outer ends of the connecting frames 14 through bearings. Claws 16 are installed at the outer ends of the hinge ears 15. The number of the connecting frames 14, the hinge ears 15 and the claws 16 is 3 - 6 groups. Through grooves are opened at positions on the outer part of the pull rod 9 corresponding to the claws 16. Please refer to Figure 4 , outer ends of the inner insertion rod 11 are coaxially connected with guide rods 12 respectively. Springs 17 are sleeved on the outer parts of the guide rods 12. Left and right ends of the springs 17 are respectively connected with the outer ends of the inner insertion rod 11 and corresponding positions inside the pull rod 9. By pressing the inner insertion rod 11, the movement of the hinge ears 15 can be pushed through the annular grooves 13, so that the claws 16 can be closed, which is convenient for connecting the pipeline with the flange 3. After the flange 3 is assembled, releasing the inner insertion rod 11 can push the inner insertion rod 11 to reset under the action of the spring 17, and then the claws 16 can be reopened. By rotating the screw rod 6 to drive the horizontal movement of the pull rod 9, the two flanges 3 can be tightened. This not only improves the connection stability of the flange 3, but also makes the connection between the flange 3 and the shell 1 an integral whole through the pull rod 9 and the screw rod 6, so that the flange 3 can be supported assistantly, the vibration impact received by it is reduced, the bolts inside the flange 3 are prevented from loosening, the sealing performance of the flowmeter is improved, the leakage problem caused by bolt loosening is prevented, and the detection accuracy of the flowmeter is improved. Please refer to Figure 3 , outer ends of the pull rods 9 are all tapered. The outer parts of the pull rods 9 are of thread structure. Nuts 10 are screwed at the middle positions of the outer parts of the pull rods 9. Pushing rods are welded on the outer parts of the nuts 10 and the outer sides of the inner parts of the screw rod 6 respectively. Inner ends of the hinge frames 8 are connected with corresponding positions of the outer rings of the ball bearings 7. The outer part of the screw rod 6 is connected with the inner rings of the ball bearings 7.

[0031] In this solution, by pressing the inner insertion rod 11, the movement of the articulated ear 15 can be driven through the annular groove 13, so that the claw 16 can be closed, facilitating the connection of the pipeline and the flange 3. After the flange 3 is assembled, the inner insertion rod 11 is released, and under the action of the spring 17, the inner insertion rod 11 can be pushed to reset, and then the claw 16 can be reopened. By rotating the screw rod 6 to drive the horizontal movement of the pull rod 9, the two flanges 3 can be tightened. This not only improves the connection stability of the flange 3, but also makes the connection between the flange 3 and the housing 1 as a whole through the pull rod 9 and the screw rod 6, enabling auxiliary support for the flange 3, reducing the vibration impact it receives, preventing the bolts inside the flange 3 from loosening, improving the sealing performance of the flowmeter, preventing leakage problems caused by bolt loosening, and enhancing the detection accuracy of the flowmeter.

[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turbine flowmeter for gas, characterized in that, Comprising: A housing (1), a detection sensor (2) is installed on the top of the housing (1), flanges (3) are installed at both the left and right ends of the housing (1), and mounting seats (4) are connected to the upper and lower left and right sides of the housing (1); A screw rod (6) is screwed inside the mounting seat (4), ball bearings (7) are sleeved on the outer ends of the screw rod (6), upper and lower outer sides of the ball bearings (7) are connected with hinge frames (8), pull rods (9) are installed on the inner sides of the outer ends of the hinge frames (8), and the outer ends of the pull rods (9) penetrate through corresponding positions on the upper and lower sides of the inside of the flange (3); Inner inserting rods (11) are inserted inside the pull rods (9), annular grooves (13) are formed on the outer sides of the inner inserting rods (11), connecting frames (14) are circumferentially installed inside the annular grooves (13), hinge ears (15) are installed at the outer ends of the connecting frames (14) through bearings, and claw jaws (16) are installed at the outer ends of the hinge ears (15).

2. The gas turbine flowmeter according to claim 1, wherein: Screw holes are formed at the four corners inside the flange (3), the flanges (3) are assembled through bolts and the screw holes, and sealing rings (5) are clamped inside the flanges (3).

3. A gas turbine flowmeter according to claim 1, characterized in that: The number of the connecting frames (14), hinge ears (15) and claw jaws (16) is 3 - 6 groups, and through grooves are formed at positions on the outer parts of the pull rods (9) corresponding to the claw jaws (16).

4. A gas turbine flowmeter according to claim 1, characterized in that: Guide rods (12) are coaxially connected to the outer ends of the inner inserting rods (11), springs (17) are sleeved on the outer parts of the guide rods (12), and the left and right ends of the springs (17) are respectively connected to corresponding positions of the outer ends of the inner inserting rods (11) and the inner cavities of the pull rods (9).

5. A gas turbine flowmeter according to claim 1, characterized in that: The outer ends of the pull rods (9) are tapered, the outer parts of the pull rods (9) are threaded structures, and nuts (10) are screwed at the middle positions of the outer parts of the pull rods (9).

6. A gas turbine flowmeter according to claim 5, characterized in that: Pushing rods are welded to the outer parts of the nuts (10) and the outer sides of the inner parts of the screw rods (6), the inner ends of the hinge frames (8) are connected to corresponding positions of the outer rings of the ball bearings (7), and the outer parts of the screw rods (6) are connected to the inner rings of the ball bearings (7).

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