An external electrode for electromagnetic flowmeter
Patent Information
- Application Number
- CN202522045572.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-23
AI Technical Summary
[0004]本实用新型提供一种电磁流量计用外插式电极，旨在解决外插式电极安装时，需要安装焊接垂直度较高，否则电极安装后不对称，在高压环境下旋紧电极密封效果变差的问题
[0012]与现有技术相比，本实用新型的有益效果是：本实用新型的一种电磁流量计用外插式电极，通过电机本体可拆卸连接，便于在安装的过程中调节电机本体的对称度，提高电机本体安装效率、安装方便、工作性能可靠，且降低小口径电磁的生产制作成本，降低电机本体处出现泄露的风险，使小口径电磁实现耐高压，拓展电磁流量计压力的适用范围。
Smart Images
Figure CN224788066U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrode technology, and in particular relates to an external electrode for an electromagnetic flowmeter. Background Technology
[0002] Currently, small-diameter electromagnetic flowmeters use two types of electrodes: external insertion and internal insertion. The conventional external insertion type involves welding a cylindrical threaded base to a hole in the measuring tube, then inserting a PFA liner before drilling the hole to install the electrode. The electrode is sealed by tightening the threaded clamp. Internal insertion electrodes, due to their smaller diameter, cannot be inserted through the inner wall of the liner; instead, a separate electrode rod is used, connected to the electrode head via a thread.
[0003] In the existing technology, when installing external electrodes, a high degree of verticality in the welding is required. Otherwise, the electrodes will be asymmetrical after installation, and the sealing effect will be poor when tightening the electrodes under high pressure. Poor installation quality will affect the later application of the electromagnetic flowmeter. Utility Model Content
[0004] This utility model provides an external electrode for electromagnetic flowmeters, aiming to solve the problem that when installing external electrodes, a high degree of verticality is required during welding; otherwise, the electrodes will be asymmetrical after installation, and the sealing effect will deteriorate when tightening the electrodes under high pressure.
[0005] This utility model is implemented as follows: an external electrode for an electromagnetic flowmeter includes a motor mounting base. A lining layer is provided inside the slot at the top of the motor mounting base. A motor body with its bottom penetrating inside is placed on top of the lining layer. A motor cover plate is provided above the motor mounting base. An insulating gasket adapted to the motor body is provided inside the motor cover plate. The insulating gasket is sleeved on the top of the motor body. The motor cover plate is detachably mounted above the motor mounting base by a bolt structure.
[0006] Preferably, the bolt structure includes four hexagon socket head cap screws and four internal threaded holes. The four hexagon socket head cap screws are respectively located at the four corners of the motor cover plate, and the four internal threaded holes are respectively opened at the four corners of the top of the motor mounting base and are adapted to the corresponding hexagon socket head cap screws.
[0007] Preferably, the motor cover plate has four movable openings for the movement of the internal hexagonal head screws.
[0008] Preferably, each of the four corners of the upper surface of the motor cover is provided with a flat washer adapted to the hexagon socket head cap screw, and the upper surface of the flat washer is provided with a spring washer adapted to the hexagon socket head cap screw.
[0009] Preferably, a motor lead sheet is sleeved on the surface of the motor body, and the motor lead sheet is located between the lower surface of the insulating pad and the top of the motor lead sheet.
[0010] Preferably, when the lining layer is embedded in the slot at the top of the motor mounting base, its bottom is spliced with the bottom of the motor mounting base to form a smooth arc surface.
[0011] Beneficial effects
[0012] Compared with the prior art, the beneficial effects of this utility model are: the external electrode for the electromagnetic flowmeter of this utility model is detachably connected to the motor body, which facilitates the adjustment of the symmetry of the motor body during installation, improves the installation efficiency of the motor body, makes installation convenient, and ensures reliable working performance. It also reduces the production cost of small-diameter electromagnetic electrodes, reduces the risk of leakage at the motor body, enables small-diameter electromagnetic electrodes to withstand high pressure, and expands the applicable pressure range of the electromagnetic flowmeter. Attached Figure Description
[0013] Figure 1 This is a front sectional view of the present invention.
[0014] Figure 2 This is a side view of the present invention.
[0015] Figure 3 This utility model Figure 2 Enlarged view of a portion of point A in the middle.
[0016] In the diagram: 1. Motor cover plate; 2. Motor mounting base; 3. Insulating gasket; 4. Motor lead plate; 5. Lining layer; 6. Motor body; 7. Socket head screw; 8. Spring washer; 9. Flat washer; 10. Internal threaded hole; 11. Movable port. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0018] Please see Figure 1 and 3 This utility model provides a technical solution: an external electrode for an electromagnetic flowmeter, including a motor mounting base 2, a lining layer 5 is provided inside the slot at the top of the motor mounting base 2, a motor body 6 with its bottom penetrating through the top of the lining layer 5 is placed on the top of the lining layer 5, and a motor cover plate 1 is provided above the motor mounting base 2.
[0019] The motor cover plate 1 has an insulating gasket 3 that is compatible with the motor body 6 inside. The insulating gasket 3 is fitted on the top of the motor body 6. The motor cover plate 1 is detached and installed above the motor mounting base 2 by bolts.
[0020] The motor body 6 is detachable, which facilitates the adjustment of the symmetry of the motor body 6 during installation, improves the installation efficiency of the motor body 6, makes installation convenient, and ensures reliable working performance. It also reduces the production cost of small-diameter electromagnetic flowmeters, reduces the risk of leakage at the motor body 6, enables small-diameter electromagnetic flowmeters to withstand high pressure, and expands the applicable range of electromagnetic flowmeter pressure.
[0021] Motor lead plates 4 are fitted onto the surface of the motor body 6, and the motor lead plates 4 are located between the lower surface of the insulating pad 3 and the top of the motor lead plates 4.
[0022] After the lining layer 5 is installed, a suitable mounting hole is opened on the surface of the motor mounting base 2 according to the size of the motor body 6. The motor body 6 is inserted into the through mounting hole. The motor body 6 is further cut according to the excess size of the inner wall. Then, the motor lead plate 4 and the insulating gasket 3 are added before the motor cover plate 1 is installed.
[0023] Furthermore, the bolt structure includes four hexagon socket head cap screws 7 and four internal threaded holes 10. The four hexagon socket head cap screws 7 are respectively located at the four corners of the motor cover plate 1, and the four internal threaded holes 10 are respectively opened at the four corners of the top of the motor mounting base 2, and are adapted to the corresponding hexagon socket head cap screws 7.
[0024] In this embodiment, the internal hexagon head screw 7 is tightened using a torque wrench to the specified torque value, and finally, sealant is applied for sealing.
[0025] Four hexagon socket head cap screws 7 are inserted into the four internal threaded holes 10 on the motor mounting base 2 for tightening. Tighten them diagonally, and finally use a torque wrench to ensure that the torque is consistent. When installing the motor body 6, it should be appropriately trimmed according to the remaining length of the inner wall of the tube to ensure that the motor body 6 does not extend too much into the tube wall, causing internal resistance and blockage. The motor body 6 is sealed to prevent the motor body 6 and the motor lead wire 4 from getting damp and causing signal distortion. Sealant is used to fill the sealant.
[0026] Furthermore, the motor cover plate 1 has four movable openings 11 for the movement of hexagon socket head cap screws 7.
[0027] Furthermore, each of the four corners of the upper surface of the motor cover plate 1 is provided with a flat washer 9 that is compatible with the internal hexagonal head screw 7, and the upper surface of the flat washer 9 is provided with a spring washer 8 that is compatible with the internal hexagonal head screw 7.
[0028] Furthermore, the spring washer 8 and the flat washer 9 cooperate to facilitate the threaded connection between the internal hexagonal head screw 7 and the internal threaded hole 10, thereby improving the anti-loosening performance of the internal hexagonal head screw 7 and thus improving the stability of the internal hexagonal head screw 7 after it is locked.
[0029] Furthermore, when the lining layer 5 is embedded inside the slot at the top of the motor mounting base 2, its bottom is spliced with the bottom of the motor mounting base 2 to form a smooth arc surface.
[0030] The working principle and usage process of this utility model are as follows: After the lining layer 5 is installed, a suitable mounting hole is opened on the surface of the motor mounting base 2 according to the size of the motor body 6. The motor body 6 is inserted into the through mounting hole. The motor body 6 is further cut according to the excess size of the inner wall. Then, the motor lead wire piece 4 and the insulating gasket 3 are added, and the motor cover plate 1 is installed. The four internal hexagonal head screws 7 are respectively inserted into the four internal threaded holes 10 on the motor mounting base 2 for fastening. They are tightened diagonally. Finally, a torque wrench is used to ensure that the torque is consistent. When installing the motor body 6, it should be done according to... The appropriate trimming of the remaining length on the inner wall of the pipe ensures that the motor body 6 does not extend too far into the pipe wall, causing internal resistance and blockage. The motor body 6 is sealed to prevent signal distortion caused by moisture on the motor body 6 and motor lead wire 4. The motor body 6 is detachable, which facilitates adjustment of the symmetry of the motor body 6 during installation, improves the installation efficiency of the motor body 6, makes installation convenient, and ensures reliable working performance. It also reduces the production cost of small-diameter electromagnetic flowmeters, reduces the risk of leakage at the motor body 6, enables small-diameter electromagnetic flowmeters to withstand high pressure, and expands the applicable pressure range of electromagnetic flowmeters.
[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An external electrode for an electromagnetic flowmeter, comprising a motor mounting base (2), characterized in that: The slot at the top of the motor mounting base (2) is provided with a lining layer (5). The top of the lining layer (5) is placed with a motor body (6) that extends through it. A motor cover plate (1) is provided above the motor mounting base (2). An insulating gasket (3) adapted to the motor body (6) is provided inside the motor cover plate (1). The insulating gasket (3) is fitted onto the top of the motor body (6). The motor cover plate (1) is detached and installed above the motor mounting base (2) by bolts.
2. The external electrode for an electromagnetic flowmeter as described in claim 1, characterized in that: The bolt structure includes four hexagonal head screws (7) and four internal threaded holes (10). The four hexagonal head screws (7) are respectively located at the four corners of the motor cover plate (1), and the four internal threaded holes (10) are respectively located at the four corners of the top of the motor mounting base (2) and are adapted to the corresponding hexagonal head screws (7).
3. The external electrode for an electromagnetic flowmeter as described in claim 2, characterized in that: The motor cover plate (1) has four movable openings (11) for the internal hexagonal head screws (7) to move.
4. An external electrode for an electromagnetic flowmeter as described in claim 2, characterized in that: The motor cover plate (1) has four corners on its upper surface equipped with flat washers (9) that are compatible with the internal hexagonal head screws (7), and the upper surface of the flat washers (9) is equipped with spring washers (8) that are compatible with the internal hexagonal head screws (7).
5. An external electrode for an electromagnetic flowmeter as described in claim 1, characterized in that: The surface of the motor body (6) is fitted with a motor lead plate (4), which is located between the lower surface of the insulating pad (3) and the top of the motor lead plate (4).
6. An external electrode for an electromagnetic flowmeter as described in claim 1, characterized in that: When the lining layer (5) is embedded in the slot at the top of the motor mounting base (2), its bottom is spliced with the bottom of the motor mounting base (2) to form a smooth arc surface.