Resistance type mechanical flowmeter

Abstract

The utility model discloses a resistance type mechanical flowmeter which comprises a gear motor component, a mechanical meter head component and an electric analog signal component. The gear motor component comprises a first shell, a gear pair and a first magnet, the first magnet is fixedly arranged on the gear pair, and a series oil port is formed in the surface of the first shell; the mechanical watch head part comprises a second shell, a gear assembly, a second magnet and an indication assembly used for displaying indication information, the first magnet is magnetically connected with the second magnet, the gear assembly is connected with the second magnet and the indication assembly, and the second magnet drives the gear assembly to rotate; the electric analog signal component comprises a potentiometer and a connector, the connector is arranged on one side of the second shell and electrically connected with the potentiometer, and the gear assembly rotates to drive the potentiometer to change the resistance value of the potentiometer. The resistance type mechanical flowmeter has the advantages that flow information of hydraulic oil in the electro-hydraulic actuator can be displayed and can be converted into electric signals to achieve remote control.

Description

Technical Field

[0001] The utility model relates to the field of remote control and valve position indication of ship valves, in particular to a resistance type mechanical flow meter. Background Art

[0002] Electro-hydraulic actuator is a driving system that combines hydraulic transmission with electrical control. Valves used in the shipbuilding industry are widely driven by electro-hydraulic actuators. Electro-hydraulic actuators drive the valves of ships to control the pressure, flow rate and flow direction of the fluid in the ship's pipelines, so that the ship is in a suitable environmental condition.

[0003] However, when the electro-hydraulic actuator drives the valve of the ship, if the actuator is not suitable for installing a local mechanical valve position indicator, the staff cannot know the position of the valve in time, and at the same time, it is very inconvenient to control the electro-hydraulic actuator. Therefore, a mechanical device is needed that can display the flow information of the hydraulic oil in the electro-hydraulic actuator and convert it into a valve position electrical signal to realize remote control. Utility Model Content

[0004] The utility model aims to provide a resistance-type mechanical flow meter which can display the flow information of hydraulic oil in an electro-hydraulic actuator and convert it into a valve position electrical signal to realize remote control.

[0005] The utility model provides a resistance type mechanical flow meter, comprising a gear motor component, a mechanical meter head component and an electrical analog signal component;

[0006] The gear motor component comprises a first housing, a gear pair and a first magnet, wherein the gear pair and the first magnet are both arranged in the first housing, the first magnet is fixedly arranged on the gear pair, and a serial oil port is opened on one side surface of the first housing;

[0007] The mechanical watch head component includes a second housing, a gear assembly, a second magnet and an indication assembly for displaying indication information, the gear assembly and the indication assembly are both arranged in the second housing, the first magnet is magnetically connected to the second magnet, the gear assembly is respectively connected to the second magnet and the indication assembly, and the second magnet drives the gear assembly to rotate;

[0008] The electrical analog signal component includes a potentiometer and a connector. The connector is arranged on one side of the second housing and is electrically connected to the potentiometer. The potentiometer is fixedly connected to a gear assembly. The gear assembly rotates to drive the potentiometer to change its own resistance value.

[0009] Preferably, the indicating assembly includes a flow meter head, a large pointer and a small pointer, and the large pointer and the small pointer are both arranged on the flow meter head. The gear assembly drives the large pointer and the small pointer to display the valve position information on the flow meter head. The surface of the second shell is provided with a window glass, through which the valve position information displayed on the flow meter head can be observed.

[0010] Preferably, an observation groove is formed on the surface of the second shell, a mechanical watch head cover is embedded in the observation groove, a fixing groove is formed on the inner wall of the second shell, a fixing part is formed on the outer surface of the mechanical watch head cover, the fixing part is embedded in the fixing groove, and the window glass is fixed on the mechanical watch head cover.

[0011] Preferably, an abutment platform is formed at one end of the mechanical watch head cover away from the window glass, and a first sealing ring is provided on the outer periphery of the end of the mechanical watch head cover away from the window glass and abuts against the abutment platform, and the first sealing ring seals the gap between the second shell and the mechanical watch head cover.

[0012] Preferably, a connecting shell is arranged between the first shell and the second shell, and the connecting shell is respectively installed and fixed to the first shell and the second shell, a through hole is formed on the surface of the connecting shell, a first mounting groove for accommodating the first magnet is formed on the surface of the second shell, and a second mounting groove for accommodating the second magnet is formed in the second shell, and the position of the second mounting groove corresponds to the position of the first mounting groove.

[0013] Preferably, a sealing groove is formed on the surface of the first shell, a second sealing ring is embedded in the sealing groove, and the second sealing ring is respectively in contact with the first shell and the connecting shell.

[0014] Preferably, a plurality of serially connected oil ports are provided on the surface of the first shell, and the diameters of the plurality of serially connected oil ports are different.

[0015] Preferably, a circuit board is disposed in the second housing, and the circuit board is connected to the potentiometer.

[0016] Preferably, a fixing plate is provided on one side of the second shell, and the connector is fixed to the fixing plate by threaded connection.

[0017] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0018] 1. The resistance-type mechanical flowmeter is provided with an indicating component and a connector. The resistance-type mechanical flowmeter can not only display the flow information of the hydraulic oil in the electro-hydraulic actuator, but also convert it into an electrical signal to realize remote control.

[0019] 2. The gear pair in the gear motor component and the gear assembly in the mechanical meter head component are magnetically connected through the first magnet and the second magnet that are arranged at intervals, and the oil path entering the first housing is separated from the gear assembly and the indicating assembly in the mechanical meter head component, thereby avoiding contamination and errors caused by oil leakage.

[0020] 3. A first sealing ring is provided between the mechanical watch head cover and the second shell, and the gap between the mechanical watch head cover and the second shell is filled by the first sealing ring to improve the sealing performance inside the second shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a resistance-type mechanical flow meter according to an embodiment;

[0022] Figure 2 is a front view of a resistance-type mechanical flow meter according to an embodiment;

[0023] Figure 3 is a cross-sectional view of a resistance-type mechanical flow meter according to an embodiment;

[0024] Figure 4 is a side view of a resistance-type mechanical flow meter according to an embodiment;

[0025] Figure 5 is a cross-sectional view of the first housing and the connecting housing of the embodiment;

[0026] Figure 6 is a cross-sectional view of the second housing and the connecting housing of the embodiment;

[0027] Figure 7 is a cross-sectional view of a gear motor component of an embodiment;

[0028] Figure 8 is a cross-sectional view of a mechanical watch head component of an embodiment;

[0029] Fig. 9 is a schematic diagram of the structure of the embodiment indicating the components;

[0030] Fig.10 is a cross-sectional view of a mechanical watch head cover of an embodiment;

[0031] Fig.11 It is a partial cross-sectional view of the first housing and the second sealing ring of the embodiment.

[0032] Figure numerals: 1. gear motor component; 11. first housing; 111. serial oil port; 112. sealing groove; 113. second sealing ring; 12. gear pair; 13. first magnet; 2. mechanical meter head component; 21. second housing; 211. first mounting groove; 212. second mounting groove; 213. observation groove; 214. fixing groove; 22. gear assembly; 23. second magnet; 24. indication assembly; 241. flow meter head; 242. large pointer; 243. small pointer; 25. window glass; 26. mechanical meter head cover; 261. fixing part; 262. abutment platform; 263. first sealing ring; 27. fixing plate; 3. electrical analog signal component; 31. potentiometer; 32. connector; 33. circuit board; 4. connecting housing; 41. through hole. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-11 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] Reference Figure 1-Figure 4 A resistance type mechanical flowmeter comprises a gear motor component 1, a mechanical meter head component 2, an electrical analog signal component 3 and a connecting housing 4, wherein the gear motor component 1 comprises a first housing 11, a gear pair 12 and a first magnet 13, the gear pair 12 and the first magnet 13 are both arranged in the first housing 11, and the first magnet 13 is fixedly arranged on one of the rotating shafts of the gear pair 12. A plurality of serial oil ports 111 are provided on a side surface of the first housing 11, and the serial oil ports 111 are provided for serial connection with the oil return path of the electro-hydraulic actuator; the calibers of the serial oil ports 111 are different, so that the gear motor component 1 can be serially connected with electro-hydraulic actuators of different models. The mechanical meter head component 2 comprises a second housing 21, a gear assembly 22, a second magnet 23 and an indicating assembly 24, the gear assembly 22 and the indicating assembly 24 are both arranged in the second housing 21, and the connecting housing 4 is arranged between the first housing 11 and the second housing 21, and is respectively connected with the first housing 11 and the second housing 21.

[0035] Reference Figure 5-Figure 8A first mounting groove 211 is provided on the side of the second housing 21 facing the connection housing 4, and a through hole 41 is provided on the surface of the connection housing 4. The rotating shaft of the gear pair 12 passes through the through hole 41 on the surface of the connection housing 4 and is fixed to the first magnet 13, and the first magnet 13 is installed in the first mounting groove 211. Correspondingly, a second mounting groove 212 is provided in the second housing 21. The position of the second mounting groove 212 is opposite to the position of the first mounting groove 211. The second magnet 23 of the mechanical watch head component 2 is provided in the second mounting groove 212, so that the second magnet 23 is magnetically connected to the first magnet 13, one of the rotating shafts in the gear assembly 22 is connected and fixed to the second magnet 23, and the gear assembly 22 is connected to the indicating assembly 24.

[0036] Reference Figure 3 , Figure 8 and Fig. 9 , the oil return circuit of the electro-hydraulic actuator is connected to the serial oil port 111 on the surface of the first housing 11, and the oil return circuit of the electro-hydraulic actuator drives the gear pair 12 to rotate inside, thereby driving the first magnet 13 fixedly connected to the rotating shaft of the gear pair 12 to rotate. Since the first magnet 13 is magnetically connected to the second magnet 23, the first magnet 13 drives the second magnet 23 to rotate during the rotation process, so that the indicating component 24 displays the valve position information. The indicating component 24 includes a flow meter head 241, a large pointer 242 and a small pointer 243. The large pointer 242 and the small pointer 243 are both set on the flow meter head 241. The rotation of the second magnet 23 drives the large pointer 242 or the small pointer 243 to rotate, thereby displaying the valve position information.

[0037] Reference Figure 6 , Figure 8 and Fig.10 In order to facilitate observation of the valve position information displayed by the indicating assembly 24, an observation slot 213 is formed on some surfaces of the second housing 21 away from the first housing 11, and a mechanical meter head cover 26 is arranged in the observation slot 213, and a window glass 25 is fixedly arranged on the mechanical meter head cover 26. In order to stably install the mechanical meter head cover 26 in the observation slot 213, a fixing slot 214 is formed on the inner side wall of the second housing 21, and a fixing portion 261 is correspondingly arranged on the outer peripheral side of the mechanical meter head cover 26. When the mechanical meter head cover 26 is installed, the mechanical meter head cover 26 is embedded in the observation slot 213 of the second housing 21, so that the fixing portion 261 on the peripheral side of the mechanical meter head cover 26 is inserted into the fixing slot 214 of the second housing 21. The user can observe the valve position information displayed by the large pointer 242 and the small pointer 243 through the window glass 25.

[0038] Reference Figure 3 and Fig.11, through the magnetic connection between the first magnet 13 and the second magnet 23, the transmission is realized between the gear assembly 22 and the gear pair 12, and the first magnet 13 and the second magnet 23 are separated by the second housing 21, thereby separating the gear pair 12 from the gear assembly 22 and the indicating assembly 24. In order to avoid the pollution and error caused by the leakage of the oil entering the first housing 11, the detection accuracy is improved. In order to improve the sealing performance inside the second housing 21, an abutment platform 262 is formed at one end of the mechanical meter head cover 26 away from the window glass 25, and a first sealing ring 263 is sleeved on the outer periphery of the end of the mechanical meter head cover 26 away from the window glass 25, so that the first sealing ring 263 abuts against the abutment platform 262; after the mechanical meter head cover 26 is installed in the observation slot 213 of the second housing 21, the first sealing ring 263 fills the gap between the mechanical meter head cover 26 and the second housing 21, thereby improving the sealing performance inside the second housing 21. In order to prevent oil leakage in the first shell 11, a sealing groove 112 is opened on the side of the first shell 11 facing the connecting shell 4, and a second sealing ring 113 is arranged in the sealing groove 112. The second sealing ring 113 fills the gap between the first shell 11 and the connecting shell 4, thereby improving the sealing inside the first shell 11.

[0039] Reference Figure 8 The electrical analog signal component 3 includes a potentiometer 31 and a connector 32. A fixing plate 27 is provided on one side of the second housing 21. The connector 32 and the fixing plate 27 are fixed by threaded connection. The potentiometer 31 is installed with the gear assembly 22. A circuit board 33 is provided in the second housing 21. The potentiometer 31 is connected with the connector 32 to output a continuous electrical signal. The circuit board 33 contacts the pointer to send a switch electrical signal. The gear assembly 22 drives the potentiometer 31 to change its own resistance value during rotation, and converts it into a simulated valve opening signal. In addition, the resistance value of the potentiometer 31 can also be directly read by a multimeter.

[0040] The connector 32 can be connected to an external circuit, and the electro-hydraulic actuator controls its own circuit board. By reading the changed resistance value of the potentiometer 31, it can be converted into an analog valve opening electrical signal and transmitted to the control center, and the valve position information can be read remotely from the control center. After the current signal is input from the external circuit to the connector 32, the electro-hydraulic actuator circuit board will analyze the current signal and compare it with the input opening control signal to determine whether to control the motor to rotate forward or reverse. After the judgment is completed, it will be executed to move the valve opening to a position that matches the input current signal, thereby realizing remote control.

[0041] The specific implementation principle of the embodiment of the present application is as follows: when it is necessary to remotely control the electro-hydraulic actuator through the resistance-type mechanical flowmeter, the high-pressure oil circuit output by the internal gear pump is connected in series with the series oil port 111 of the resistance-type mechanical flowmeter, and the gear pair 12 in the mechanical motor component is driven by the oil circuit, and the first magnet 13 is driven to rotate through the gear pair 12, thereby driving the second magnet 23 in the mechanical meter head component 2 that is magnetically connected to the first magnet 13 to rotate. In this way, a small part of the pressure energy of the hydraulic oil is converted into the mechanical energy of the rotation of the first magnet 13, and the volume flow through the gear motor component 1 is proportional to the rotation speed of the magnet. When the electro-hydraulic actuator reaches the limit point, the potentiometer shaft no longer rotates, and the stop no longer changes.

[0042] During the rotation process, the second magnet 23 drives the large pointer 242 and the small pointer 243 on the flow meter header 241 to rotate through the gear assembly 22, thereby displaying the valve position information on the flow meter header 241, and the user can read the valve position information displayed on the flow meter header 241 through the window glass 25. While rotating, the gear assembly 22 also drives the potentiometer 31 to change its resistance value, and the resistance value of the potentiometer 31 can be read by the circuit board 33 connected thereto and converted into an analog valve opening signal, or the resistance value of the potentiometer 31 can be directly read by a multimeter. When it is necessary to remotely read the valve position information and control the valve opening, the connector 32 of the electrical analog signal component 3 can be externally connected.

[0043] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A resistance type mechanical flow meter, characterized in that: Including gear motor parts, mechanical meter head parts and electrical analog signal parts; The gear motor component comprises a first housing, a gear pair and a first magnet, wherein the gear pair and the first magnet are both arranged in the first housing, the first magnet is fixedly arranged on the gear pair, and a serial oil port is opened on one side surface of the first housing; The mechanical watch head component includes a second housing, a gear assembly, a second magnet and an indication assembly for displaying indication information, the gear assembly and the indication assembly are both arranged in the second housing, the first magnet is magnetically connected to the second magnet, the gear assembly is respectively connected to the second magnet and the indication assembly, and the second magnet drives the gear assembly to rotate; The electrical analog signal component includes a potentiometer and a connector. The connector is arranged on one side of the second housing and is electrically connected to the potentiometer. The potentiometer is fixedly connected to a gear assembly. The gear assembly rotates to drive the potentiometer to change its own resistance value.

2. A resistance type mechanical flow meter according to claim 1, characterized in that: The indicating assembly includes a flow meter head, a large pointer and a small pointer, both of which are arranged on the flow meter head. The gear assembly drives the large pointer and the small pointer to display the valve position information on the flow meter head. The surface of the second shell is provided with a window glass, through which the valve position information displayed on the flow meter head can be observed.

3. A resistance type mechanical flow meter according to claim 2, characterized in that: An observation groove is formed on the surface of the second shell, and a mechanical watch head cover is embedded in the observation groove. A fixing groove is formed on the inner wall of the second shell, and a fixing part is formed on the outer surface of the mechanical watch head cover. The fixing part is embedded in the fixing groove, and the window glass is fixed on the mechanical watch head cover.

4. A resistance type mechanical flow meter according to claim 3, characterized in that: An abutment platform is formed at one end of the mechanical meter head cover away from the window glass, and a first sealing ring is arranged on the periphery of the end of the mechanical meter head cover away from the window glass and abuts against the abutment platform, and the first sealing ring seals the gap between the second shell and the mechanical meter head cover.

5. A resistance type mechanical flow meter according to claim 1, characterized in that: A connecting shell is arranged between the first shell and the second shell, and the connecting shell is respectively installed and fixed to the first shell and the second shell. A through hole is formed on the surface of the connecting shell, and a first mounting groove for accommodating the first magnet is formed on the surface of the second shell. A second mounting groove for accommodating the second magnet is formed in the second shell, and the position of the second mounting groove corresponds to the position of the first mounting groove.

6. A resistance type mechanical flow meter according to claim 5, characterized in that: A sealing groove is formed on the surface of the first shell, a second sealing ring is embedded in the sealing groove, and the second sealing ring is respectively in contact with the first shell and the connecting shell.

7. A resistance type mechanical flow meter according to claim 1, characterized in that: A plurality of serial oil ports are provided on the surface of the first shell, and the diameters of the serial oil ports are different.

8. A resistance type mechanical flow meter according to claim 1, characterized in that: A circuit board is arranged in the second shell, and the circuit board is connected to the potentiometer.

9. A resistance type mechanical flow meter according to claim 1, characterized in that: A fixing plate is disposed on one side of the second shell, and the connector is fixed to the fixing plate by threaded connection.

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