Refueling mechanism of gas turbine flowmeter

Abstract

The utility model discloses a refueling mechanism of a gas turbine flowmeter, which comprises a pipe body fixedly arranged on a flowmeter body and communicated with the inside of the flowmeter body, a piston rod and a one-way valve are arranged in the pipe body, the piston rod is in sliding fit with the pipe body, the one-way valve is arranged between the piston rod and the flowmeter body, and the one-way valve is arranged in the pipe body. An oil cup and a connecting hole are arranged on the pipe body, the cup bottom of the oil cup is communicated with the connecting hole, a cup cover capable of sliding up and down is arranged in the oil cup, an air hole and a handle are arranged on the cup cover, the air hole is communicated with the interior of the oil cup, the handle is arranged on the cup cover in a manner of moving up and down, and the handle is connected with the oil cup. A sealing plug is arranged at the lower end of the handle, and the sealing plug is inserted into the air hole or separated from the air hole; the device is convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbine flowmeters, and particularly relates to an oil filling mechanism for a gas turbine flowmeter. Background Technique

[0002] A gas turbine flowmeter is a commonly used gas flow measurement instrument, which is widely used in industries such as petroleum, natural gas, chemical industry, and energy. It determines the gas flow by measuring the rotation rate of the turbine generated when the gas flows through the flowmeter, and has the advantages of high precision and fast response.

[0003] Conventionally, an oil filling and lubricating device is generally provided on a gas turbine flowmeter. The oil filling and lubricating device is used to lubricate the mechanical components (such as turbine bearings, etc.) inside the flowmeter to ensure that the internal mechanical components can reduce friction, avoid premature wear, thereby extending the service life of the flowmeter and maintaining the measurement accuracy. For example, an oil filling and lubricating mechanism for a gas turbine flowmeter disclosed in the patent application No. CN202121493608.4 includes an oil pump seat. A through cavity is provided in the middle of the oil pump seat, a piston rod and a one-way valve are arranged in the through cavity, an oil storage mechanism is provided on the top of the oil pump seat, and the oil storage mechanism includes an oil cup. The bottom of the oil cup extends into the through cavity.

[0004] Generally, a cap body is provided on the oil cup to isolate the inside of the oil cup from the outside to protect the lubricating oil in the oil cup. If the lubricating oil in the oil cup is directly pumped into the through cavity without opening the cap body, the pressure difference between the inside and outside of the oil cup will gradually increase, affecting the user's pushing and pulling of the piston rod and the ease of opening the cap body to replenish the lubricating oil later. If the cap body is opened and then the lubricating oil in the oil cup is pumped into the through cavity, the oil cup is in an open state, and dust, impurities, moisture, etc. in the outside world may enter the oil cup, affecting the lubrication effect. Therefore, there is still room for improvement. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide an oil filling mechanism for a gas turbine flowmeter, which is convenient to use.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: an oil filling mechanism for a gas turbine flowmeter, including a pipe body fixedly arranged on the flowmeter body and communicating with the inside of the flowmeter body. A piston rod and a one-way valve are arranged in the pipe body. The piston rod is slidably matched with the pipe body. The one-way valve is located between the piston rod and the flowmeter body. An oil cup and a connection hole are provided on the pipe body. The bottom of the oil cup is communicated with the connection hole. A cup cover capable of sliding up and down is arranged in the oil cup. A ventilation hole and a handle are provided on the cup cover. The ventilation hole is communicated with the inside of the oil cup. The handle is arranged on the cup cover so as to be able to move up and down. A sealing plug is arranged at the lower end of the handle. The sealing plug is inserted into the ventilation hole or separated from the ventilation hole.

[0007] Preferably, a fixing ring is provided on the upper end surface of the cup lid, and a cap body is sleeved on the fixing ring. A perforation is provided on the cap body, and the perforation and the ventilation hole are located on the same axis. The lower end of the handle passes through the perforation and extends into the fixing ring. A limiting member is fixedly provided on the side surface of the handle, and the limiting member is located between the cup lid and the cap body.

[0008] Preferably, an external thread is provided on the outer side surface of the fixing ring, and an internal thread is provided on the cap body. The cap body is threadedly connected to the external thread on the fixing ring through the internal thread.

[0009] Preferably, the limiting member is a plurality of limiting pins. A plurality of jacks distributed along the circumferential direction are provided on the side surface of the handle, and the plurality of jacks correspond to the plurality of limiting pins one by one. The limiting pins are inserted into the corresponding jacks.

[0010] Preferably, a plurality of through holes communicating with the inside of the fixing ring are provided on the cap body.

[0011] Preferably, the handle includes a connecting rod and a handle. The upper end of the connecting rod is fixedly connected to the handle, and the lower end of the connecting rod passes through the perforation and is connected to the sealing plug.

[0012] Preferably, a tension spring is provided between the cap body and the handle, and the tension spring is used to drive the handle to move downward.

[0013] Preferably, an insertion tube and a check valve provided in the insertion tube are provided at the bottom of the oil cup, and the insertion tube is inserted into the connection hole.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] 1. When the user pulls the piston rod to generate negative pressure in the tube body, the lubricating oil in the oil cup is injected into the tube body through the connection hole. During this process, the cup lid slides downward to keep the air pressure inside and outside the oil cup consistent. Then, the user pushes the piston rod to inject the lubricating oil in the tube body into the flowmeter body through the one-way valve to achieve the lubrication effect. The staff can pull and push the piston rod relatively easily, which is convenient for use;

[0016] 2. After the lubricating oil in the oil cup is consumed, the height of the cup lid gradually decreases. The user can timely confirm the remaining amount of the lubricating oil in the oil cup according to the position of the cup lid. When the cup lid is in contact with the bottom of the oil cup and blocks the connection hole, the user cannot pull the piston rod, avoiding dry friction of the mechanical components inside the flowmeter due to the failure to supply the lubricating oil to the flowmeter body, and the reliability is good;

[0017] 3. When the handle is lifted, the sealing plug moves upward and separates from the ventilation hole, and the outside air can flow into the oil cup through the ventilation hole, which is convenient for the user to open the cup cover and is relatively convenient to use. Description of the Drawings

[0018] Figure 1 is a schematic structural view of the present utility model;

[0019] Figure 2 is a schematic partial structural view of the present utility model;

[0020] Figure 3 is a schematic partial sectional structural view of the present utility model;

[0021] Figure 4 is a schematic partial exploded structural view of the present utility model;

[0022] Figure 5 is Figure 3 a partial schematic view in

[0023] Figure 6 is Figure 4 a partial schematic view in

[0024] In the figure: 1, pipe body; 11, connection hole; 2, piston rod; 3, one-way valve; 4, oil cup; 41, insertion tube; 42, check valve; 5, cup cover; 51, ventilation hole; 52, fixing ring; 521, external thread; 53, cap body; 531, perforation; 532, internal thread; 533, through hole; 6, handle; 61, limiting member; 611, limiting pin; 62, jack; 63, connecting rod; 64, handle; 65, tension spring; 7, sealing plug; 8, flowmeter body. Detailed Embodiment

[0025] The following further describes the present utility model in detail with reference to the embodiments of the drawings.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0027] Embodiment 1: As Figures 1 to 4As shown in the figure, a refueling mechanism for a gas turbine flowmeter includes a pipe body 1 fixedly arranged on a flowmeter body 8 and communicating with the inside of the flowmeter body 8. A piston rod 2 and a one-way valve 3 are arranged in the pipe body 1. The piston rod 2 is slidably matched with the pipe body 1. The one-way valve 3 is located between the piston rod 2 and the flowmeter body 8. An oil cup 4 and a connection hole 11 are arranged on the pipe body 1. The bottom of the oil cup 4 is communicated with the connection hole 11. A cup cover 5 capable of sliding up and down is arranged in the oil cup 4. A ventilation hole 51 and a handle 6 are arranged on the cup cover 5. The ventilation hole 51 is communicated with the inside of the oil cup 4. The handle 6 is arranged on the cup cover 5 so as to be able to move up and down. A sealing plug 7 is arranged at the lower end of the handle 6. When the handle 6 drives the sealing plug 7 to move downward, the sealing plug 7 is inserted into the ventilation hole 51 to isolate the oil cup 4 from the outside. When the handle 6 drives the sealing plug 7 to move upward, the sealing plug 7 is separated from the ventilation hole 51, and outside air can flow into the oil cup 4 through the ventilation hole 51.

[0028] In this embodiment, the connection hole 11 is located between the one-way valve 3 and the piston rod 2. By pushing and pulling the piston rod 2, the lubricating oil in the oil cup 4 can be injected into the flowmeter body 8 through the pipe body 1 to achieve the lubricating effect.

[0029] It should be noted that both between the piston rod 2 and the pipe body 1 and between the cup cover 5 and the oil cup 4 are sealed and slidably matched.

[0030] Conventionally, a wrench for driving the piston rod 2 to reciprocate is arranged on the side surface of the pipe body 1, making the operation more labor-saving and easy.

[0031] Embodiment Two: As shown in Figure 5 and Figure 6 the figure, the rest is the same as that in Embodiment One. The difference lies in that a fixing ring 52 and a cap body 53 sleeved on the fixing ring 52 are arranged on the upper end surface of the cup cover 5. A perforation 531 is arranged on the cap body 53. The perforation 531 and the ventilation hole 51 are located on the same axis. The lower end of the handle 6 passes through the perforation 531 and extends into the fixing ring 52. A limiting member 61 is fixedly arranged on the side surface of the handle 6. The limiting member 61 is located between the cup cover 5 and the cap body 53.

[0032] In this embodiment, an external thread 521 is arranged on the outer side surface of the fixing ring 52, and an internal thread 532 is arranged on the cap body 53. The cap body 53 is threadedly connected with the external thread 521 on the fixing ring 52 through the internal thread 532, with a simple structure and convenient assembly.

[0033] Embodiment Three: As shown in Figures 3 to 6 the figure, the rest is the same as that in Embodiment Two. The difference lies in that the limiting member 61 is a plurality of limiting pins 611. A plurality of insertion holes 62 distributed along the circumferential direction are arranged on the side surface of the handle 6. The plurality of insertion holes 62 correspond to the plurality of limiting pins 611 one by one, and the limiting pins 611 are inserted into the corresponding insertion holes 62.

[0034] In this embodiment, a plurality of through holes 533 communicating with the inside of the fixing ring 52 are provided on the cap body 53.

[0035] In this embodiment, the handle 6 includes a connecting rod 63 and a handle 64. The upper end of the connecting rod 63 is fixedly connected to the handle 64. The lower end of the connecting rod 63 passes through the through hole 531 and is connected to the sealing plug 7. The jack 62 is provided on the side surface of the connecting rod 63. Further, a tension spring 65 is provided between the cap body 53 and the handle 64, and the tension spring 65 is used to drive the handle 64 to move downward.

[0036] Embodiment 4: As Figure 3 and Figure 4 shown, the rest is the same as that of Embodiment 1, and the difference is that an insertion tube 41 and a check valve 42 arranged in the insertion tube 41 are provided at the bottom of the oil cup 4, and the insertion tube 41 is inserted into the connection hole 11.

[0037] The present invention has been described exemplarily above with reference to the accompanying drawings. Obviously, the implementation of the present invention is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A refueling mechanism for a gas turbine flowmeter, comprising a tube body (1) fixedly arranged on a flowmeter body and connected to the inside of the flowmeter body, a piston rod (2) and a one-way valve (3) being arranged in the tube body (1), the piston rod (2) being slidably matched with the tube body (1), the one-way valve (3) being located between the piston rod (2) and the flowmeter body, characterized in that The tube body (1) is provided with an oil cup (4) and a connecting hole (11); the bottom of the oil cup (4) is connected to the connecting hole (11); a cup cover (5) capable of sliding up and down is provided inside the oil cup (4); an air vent (51) and a handle (6) are provided on the cup cover (5); the air vent (51) is connected to the inside of the oil cup (4); the handle (6) is arranged on the cup cover (5) so as to be movable up and down; a sealing plug (7) is provided at the lower end of the handle (6); the sealing plug (7) is inserted into the air vent (51) or separated from the air vent (51).

2. A refueling mechanism for a gas turbine flowmeter according to claim 1, characterized in that A fixing ring (52) and a cap body (53) sleeved on the fixing ring (52) are arranged on the upper end surface of the cup cover (5); a through hole (531) is arranged on the cap body (53); the through hole (531) and the air vent (51) are located on the same axis; the lower end of the handle (6) passes through the through hole (531) and extends into the fixing ring (52); a limiting member (61) is fixedly arranged on the side of the handle (6); the limiting member (61) is located between the cup cover (5) and the cap body (53).

3. A refueling mechanism for a gas turbine flowmeter according to claim 2, characterized in that The outer side surface of the fixing ring (52) is provided with an external thread (521), the cap body (53) is provided with an internal thread (532), and the cap body (53) is threadedly connected to the external thread (521) on the fixing ring (52) via the internal thread (532).

4. A refueling mechanism for a gas turbine flowmeter according to claim 2, characterized in that The limiting member (61) is a plurality of limiting pins (611), and a side surface of the handle (6) is provided with a plurality of insertion holes (62) distributed along a circumferential direction, the plurality of insertion holes (62) correspond one-to-one to the plurality of limiting pins (611), and the limiting pins (611) are inserted into corresponding insertion holes (62).

5. A refueling mechanism for a gas turbine flowmeter according to claim 2, characterized in that The cap body (53) is provided with a plurality of through holes (533) which are in communication with the interior of the fixing ring (52).

6. A refueling mechanism for a gas turbine flowmeter according to claim 2, characterized in that The handle (6) comprises a connecting rod (63) and a handle (64); the upper end of the connecting rod (63) is fixedly connected to the handle (64); and the lower end of the connecting rod (63) passes through the through hole (531) and is connected to the sealing plug (7).

7. A refueling mechanism for a gas turbine flowmeter according to claim 6, characterized in that A tension spring (65) is provided between the cap body (53) and the handle (64), and the tension spring (65) is used to drive the handle (64) to move downward.

8. A refueling mechanism for a gas turbine flowmeter according to claim 1, characterized in that The bottom of the oil cup (4) is provided with an insertion tube (41) and a check valve (42) arranged in the insertion tube (41), and the insertion tube (41) is inserted into the connecting hole (11).

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