Elbow flowmeter convenient to maintain

Abstract

The invention relates to the technical field of elbow flow meters, in particular to a convenient-to-maintain elbow flow meter which comprises a water inlet pipe body, an elbow pipe body and a water outlet pipe body. The bent pipe body is provided with an upper differential pressure sensor and a lower differential pressure sensor; a first rotating ring is rotationally arranged at one end of the bent pipe body; the first rotating ring is provided with a first cleaning strip and a second cleaning strip; the water inlet pipe body is provided with a first fixing ring; the first fixing ring is rotationally provided with a first rotating turbine; and a first linkage assembly is arranged between the first rotating turbine and the first rotating ring. A first rotating turbine rotates through impact of liquid, a first rotating ring is driven to rotate through a first linkage assembly in the rotating process of the first rotating turbine, and a first cleaning strip and a second cleaning strip move in the mode of being attached to the inner wall of a bent pipe body correspondingly through rotation of the first rotating ring; therefore, the inner wall of the bent pipe body is cleaned, sediments on the inner wall of the bent pipe body are continuously wiped and cleaned, scaling blockage is effectively prevented, and the measurement stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elbow flowmeters, and particularly relates to an elbow flowmeter that is convenient for maintenance. Background Art

[0002] In the field of industrial fluid measurement, elbow flowmeters are widely used in flow monitoring and control scenarios in industries such as petroleum, chemical, and electric power due to advantages such as simple structure and convenient installation. However, during long-term operation, affected by factors such as fluid turbulence and sedimentation, scale or impurity accumulation is extremely likely to occur on the inner wall of the elbow. This accumulation not only significantly reduces the measurement accuracy, causing measurement deviation, but also increases the pressure loss when the fluid passes through the elbow, affecting the operation efficiency of the entire pipeline system. In severe cases, it may even cause pipeline blockage and interrupt the production process.

[0003] To solve the above problems, most elbow flowmeter products on the market currently adopt the method of manual cleaning. However, this method requires regular shutdown for maintenance, which not only consumes a large amount of manpower and material resources, but also reduces the effective operation time of the equipment and affects production efficiency. Some products are equipped with electrically driven cleaning devices, attempting to achieve automatic cleaning through mechanical movement. However, such devices have complex structures, increasing the manufacturing and maintenance costs of the equipment, and there are failure risks during the operation of the electrically driven components, which are not suitable for key production scenarios such as chemical and pharmaceutical industries with high requirements for system stability, and it is difficult to meet the needs of industrial production for efficient and stable flow measurement. Summary of the Invention

[0004] The purpose of the present invention is to provide an elbow flowmeter that is convenient for maintenance in view of the above deficiencies in the prior art.

[0005] The purpose of the present invention is achieved through the following technical solutions: An elbow flowmeter that is convenient for maintenance includes a water inlet pipe body, an elbow pipe body, and a water outlet pipe body; one end of the elbow pipe body is communicated with the water inlet pipe body; the other end of the elbow pipe body is communicated with the water outlet pipe body; a differential pressure sensor is disposed opposite to the upper and lower parts of the elbow pipe body;

[0006] A first rotating ring is rotatably provided at one end of the elbow pipe body; the first rotating ring is provided with a first cleaning strip and a second cleaning strip; the first cleaning strip and the second cleaning strip respectively abut against the inner wall of the elbow pipe body;

[0007] A first fixing ring is provided on the water inlet pipe body; a first rotating turbine is rotatably provided on the first fixing ring; a first linkage assembly is provided between the first rotating turbine and the first rotating ring; the first rotating turbine drives the first rotating ring to rotate through the first linkage assembly.

[0008] The present invention is further configured such that the first linkage assembly includes a first driving rod and a first linkage rod; one end of the first driving rod is hinged to the first fixed ring; one end of the first linkage rod is fixedly connected to the first rotating ring; the other end of the first driving rod is telescopically movably disposed at the other end of the first linkage rod;

[0009] The first driving rod is provided with a first driving groove along its length direction; the first rotating turbine is provided with a first driving block; the first driving block is slidably disposed in the first driving groove.

[0010] The present invention is further configured such that one end of the first cleaning strip and one end of the second cleaning strip are symmetrically disposed on the first rotating ring;

[0011] The first driving block is movably disposed on the first rotating turbine; a first thermosensitive spring is provided between the first driving block and the first rotating turbine.

[0012] The present invention is further configured such that one end of the first cleaning strip and one end of the second cleaning strip are respectively rotatably disposed on the first rotating ring; a friction ring is provided on the inner wall of one end of the elbow body; one end of the first cleaning strip and one end of the second cleaning strip respectively abut against the friction ring.

[0013] The present invention is further configured such that a limiting outer ring is provided on the inner wall of the elbow body; a limiting inner ring is rotatably provided within the limiting outer ring; a limiting gap is formed between the limiting outer ring and the limiting inner ring; the middle portions of the first cleaning strip and the second cleaning strip are respectively disposed in the limiting gap.

[0014] The present invention is further configured such that both the first cleaning strip and the second cleaning strip are wire brushes.

[0015] The present invention is further configured such that a second rotating ring is rotatably provided at the other end of the elbow body; a first limiting groove and a second limiting groove are formed between the outer wall of the second rotating ring and the inner wall of the elbow body; the other end of the first cleaning strip passes through the first limiting groove; the other end of the second cleaning strip passes through the second limiting groove.

[0016] The present invention is further configured such that the water outlet pipe body is provided with a second fixed ring; a second rotating turbine is rotatably provided on the second fixed ring; a second linkage assembly is provided between the second rotating turbine and the second rotating ring; the second rotating turbine drives the second rotating ring to rotate through the second linkage assembly.

[0017] The present invention is further configured such that the second linkage assembly includes a second driving rod and a second linkage rod; one end of the second driving rod is hinged to the second fixed ring; a connecting rod is fixedly provided between one end of the second linkage rod and the second rotating ring; the other end of the second driving rod is telescopically movably disposed at the other end of the second linkage rod;

[0018] The second driving rod is provided with a second driving groove along its length direction; the second rotating turbine is provided with a second driving block; the second driving block is slidably arranged in the second driving groove.

[0019] The present invention is further configured such that the first limiting groove and the second limiting groove are symmetrically arranged;

[0020] The second driving block is movably arranged on the second rotating turbine; a second thermal spring is arranged between the second driving block and the second rotating turbine.

[0021] The beneficial effects of the present invention: Through the impact of the liquid, the first rotating turbine rotates. During the rotation of the first rotating turbine, the first rotating ring is driven to rotate through the first linkage assembly. The rotation of the first rotating ring causes the first cleaning strip and the second cleaning strip to move along the inner wall of the elbow body respectively, thereby cleaning the inner wall of the elbow body, achieving continuous scraping and cleaning of the sediment on the inner wall of the elbow body, effectively preventing scale and blockage, and improving the measurement stability. Description of the Drawings

[0022] Figure 1 is a structural schematic diagram of the present invention;

[0023] Figure 2 is a cross-sectional view of the present invention;

[0024] Figure 3 is an internal structural diagram of the present invention;

[0025] Figure 4 is an internal structural diagram of the present invention from another perspective;

[0026] Figure 5 is a structural schematic diagram of the cooperation between the first fixed ring and the first rotating ring of the present invention;

[0027] Figure 6 is a structural schematic diagram of the cooperation between the first fixed ring and the first rotating ring of the present invention from another perspective;

[0028] Figure 7 is a structural schematic diagram of the cooperation between the second fixed ring and the second rotating ring of the present invention;

[0029] Figure 8 is a structural schematic diagram of the cooperation between the second fixed ring and the second rotating ring of the present invention from another perspective;

[0030] Wherein: 1. Water inlet pipe body; 11. First fixing ring; 2. Elbow pipe body; 21. Upper differential pressure sensor; 22. Lower differential pressure sensor; 23. Friction ring; 3. Water outlet pipe body; 31. Second fixing ring; 41. First rotating ring; 42. First cleaning strip; 43. Second cleaning strip; 44. Second rotating ring; 45. First limiting groove; 46. Second limiting groove; 5. First rotating turbine; 51. First driving block; 52. First thermal spring; 61. First driving rod; 62. First linkage rod; 63. First driving groove; 71. Limiting outer ring; 72. Limiting inner ring; 73. Limiting gap; 8. Second rotating turbine; 81. Second driving block; 82. Second thermal spring; 91. Second driving rod; 92. Second linkage rod; 93. Second driving groove; 94. Connecting rod. Detailed implementation mode

[0031] The present invention will be further described in conjunction with the following embodiments.

[0032] It can be seen from Figures 1 to 8 that a bend pipe flowmeter which is convenient for maintenance described in this embodiment includes a water inlet pipe body 1, an elbow pipe body 2 and a water outlet pipe body 3; one end of the elbow pipe body 2 is communicated with the water inlet pipe body 1; the other end of the elbow pipe body 2 is communicated with the water outlet pipe body 3; an upper differential pressure sensor 21 and a lower differential pressure sensor 22 are oppositely arranged on the elbow pipe body 2;

[0033] A first rotating ring 41 is rotatably arranged at one end of the elbow pipe body 2; a first cleaning strip 42 and a second cleaning strip 43 are arranged on the first rotating ring 41; the first cleaning strip 42 and the second cleaning strip 43 are respectively abutted against the inner wall of the elbow pipe body 2;

[0034] The water inlet pipe body 1 is provided with a first fixing ring 11; a first rotating turbine 5 is rotatably arranged on the first fixing ring 11; a first linkage assembly is arranged between the first rotating turbine 5 and the first rotating ring 41; the first rotating turbine 5 drives the first rotating ring 41 to rotate through the first linkage assembly; wherein the outer diameter of the first rotating ring 41 is the same as the outer diameter of the first fixing ring 11, and the inner diameter of the first rotating ring 41 is the same as the inner diameter of the first fixing ring 11. The center of the first rotating ring 41 is oppositely arranged with the center of the first fixing ring 11, and the center of the first rotating turbine 5 is eccentrically arranged with the center of the first fixing ring 11.

[0035] Specifically, when the bend pipe flowmeter which is convenient for maintenance described in this embodiment is in use, the liquid sequentially passes through the water inlet pipe body 1, the elbow pipe body 2 and the water outlet pipe body 3. When the liquid passes through the elbow pipe body 2, the upper differential pressure sensor 21 and the lower differential pressure sensor 22 which are oppositely arranged are used to measure the flow rate of the liquid;

[0036] When the liquid passes through the first fixed ring 11, the liquid impacts the first rotating turbine 5. Since the first rotating turbine 5 is provided with inclined blades, the impact of the liquid causes the first rotating turbine 5 to rotate. During the rotation of the first rotating turbine 5, the first rotating ring 41 is driven to rotate through the first linkage assembly. The rotation of the first rotating ring 41 enables the first cleaning strip 42 and the second cleaning strip 43 to move along the inner wall of the elbow pipe body 2 respectively, thereby cleaning the inner wall of the elbow pipe body 2, achieving continuous scraping and cleaning of the sediment on the inner wall of the elbow pipe body 2, effectively preventing fouling and blockage, and improving the measurement stability.

[0037] In the elbow flowmeter that is easy to maintain according to this embodiment, the first linkage assembly includes a first driving rod 61 and a first linkage rod 62; one end of the first driving rod 61 is hinged to the first fixed ring 11; one end of the first linkage rod 62 is fixedly connected to the first rotating ring 41; the other end of the first driving rod 61 is telescopically and movably arranged at the other end of the first linkage rod 62;

[0038] The first driving rod 61 is provided with a first driving groove 63 along its length direction; the first rotating turbine 5 is provided with a first driving block 51; the first driving block 51 is slidably arranged in the first driving groove 63; wherein the first driving block 51 is arranged on the outer peripheral surface of the first rotating turbine 5.

[0039] Specifically, through the above settings in this embodiment, when the impact of the liquid causes the first rotating turbine 5 to rotate, the first driving block 51 moves in the first driving groove 63. Since one end of the first driving rod 61 is hinged to the first fixed ring 11, one end of the first linkage rod 62 is fixedly connected to the first rotating ring 41, and the other end of the first driving rod 61 is telescopically and movably arranged at the other end of the first linkage rod 62, when the first rotating turbine 5 rotates continuously, it can drive the first driving rod 61 to swing reciprocally along the hinge point with the first fixed ring 11, that is, it can drive the first rotating ring 41 to rotate reciprocally, enabling the first cleaning strip 42 and the second cleaning strip 43 to move along the inner wall of the elbow pipe body 2 respectively, thereby cleaning the inner wall of the elbow pipe body 2, achieving continuous scraping and cleaning of the sediment on the inner wall of the elbow pipe body 2, effectively preventing fouling and blockage, and improving the measurement stability.

[0040] In the elbow flowmeter that is easy to maintain according to this embodiment, one end of the first cleaning strip 42 and one end of the second cleaning strip 43 are symmetrically arranged on the first rotating ring 41; the first driving block 51 is movably arranged on the first rotating turbine 5; a first thermal spring 52 is arranged between the first driving block 51 and the first rotating turbine 5.

[0041] Specifically, since an upper differential pressure sensor 21 and a lower differential pressure sensor 22 are oppositely arranged inside the elbow pipe body 2, in order to prevent affecting the measurement of the upper differential pressure sensor 21 and the lower differential pressure sensor 22, it is necessary to prevent the first cleaning strip 42 and the second cleaning strip 43 from touching the upper differential pressure sensor 21 and the lower differential pressure sensor 22 during normal use;

[0042] In this embodiment, a first thermal spring 52 is arranged between the first driving block 51 and the first rotating turbine 5. The first thermal spring 52 has the characteristic of expanding when heated. During normal use, the temperature of the liquid is relatively low, the extension amount of the first thermal spring 52 is small, and the distance between the first driving block 51 and the center of the first rotating turbine 5 is relatively close, so that the reciprocating swing angle of the first driving rod 61 is small, and the reciprocating rotation angle of the first rotating ring 41 is small, so that the first cleaning strip 42 and the second cleaning strip 43 do not touch the upper differential pressure sensor 21 and the lower differential pressure sensor 22 when cleaning the inner wall of the elbow pipe body 2.

[0043] When it is necessary to completely clean the elbow pipe body 2, hot water is introduced into the water inlet pipe body 1. The first thermal spring 52 expands after being heated, so that the distance between the first driving block 51 and the center of the first rotating turbine 5 is far, so that the reciprocating swing angle of the first driving rod 61 is large, and the reciprocating rotation angle of the first rotating ring 41 is large, so that the first cleaning strip 42 and the second cleaning strip 43 can touch the upper differential pressure sensor 21 and the lower differential pressure sensor 22 when cleaning the inner wall of the elbow pipe body 2, so as to perform a complete cleaning.

[0044] For an elbow flowmeter that is easy to maintain according to this embodiment, one end of the first cleaning strip 42 and one end of the second cleaning strip 43 are respectively rotatably arranged on the first rotating ring 41; a friction ring 23 is arranged on the inner wall of one end of the elbow pipe body 2; one end of the first cleaning strip 42 and one end of the second cleaning strip 43 are respectively abutted against the friction ring 23. Through the above settings, when the first rotating ring 41 rotates reciprocally, it can drive the first cleaning strip 42 and the second cleaning strip 43 to rotate self - rotatably, thereby improving the cleaning effect.

[0045] For an elbow flowmeter that is easy to maintain according to this embodiment, a limiting outer ring 71 is arranged on the inner wall of the elbow pipe body 2; a limiting inner ring 72 is rotatably arranged inside the limiting outer ring 71; a limiting gap 73 is formed between the limiting outer ring 71 and the limiting inner ring 72; the middle parts of the first cleaning strip 42 and the second cleaning strip 43 are respectively arranged in the limiting gap 73. Through the above settings, the first cleaning strip 42 and the second cleaning strip 43 can be closely attached to the inner wall of the elbow pipe body 2.

[0046] A bend pipe flowmeter that is easy to maintain according to this embodiment. The first cleaning strip 42 and the second cleaning strip 43 are both wire brushes. The wire brush has good elasticity and wear resistance, and bristles are attached to the outside to effectively clean the inner wall of the bend pipe body 2.

[0047] A bend pipe flowmeter that is easy to maintain according to this embodiment. A second rotating ring 44 is rotatably provided at the other end of the bend pipe body 2; a first limiting groove 45 and a second limiting groove 46 are formed between the outer wall of the second rotating ring 44 and the inner wall of the bend pipe body 2; the other end of the first cleaning strip 42 is inserted through the first limiting groove 45; the other end of the second cleaning strip 43 is inserted through the second limiting groove 46. Specifically, through the above settings, the first cleaning strip 42 and the second cleaning strip 43 can be made to closely adhere to the inner wall of the bend pipe body 2.

[0048] A bend pipe flowmeter that is easy to maintain according to this embodiment. A second fixing ring 31 is provided on the water outlet pipe body 3; a second rotating turbine 8 is rotatably provided on the second fixing ring 31; a second linkage assembly is provided between the second rotating turbine 8 and the second rotating ring 44; the second rotating turbine 8 drives the second rotating ring 44 to rotate through the second linkage assembly. A bend pipe flowmeter that is easy to maintain according to this embodiment. The second linkage assembly includes a second driving rod 91 and a second linkage rod 92; one end of the second driving rod 91 is hinged to the second fixing ring 31; a connecting rod 94 is fixedly provided between one end of the second linkage rod 92 and the second rotating ring 44; the other end of the second driving rod 91 is telescopically movably provided at the other end of the second linkage rod 92; a second driving groove 93 is provided along the length direction of the second driving rod 91; a second driving block 81 is provided on the second rotating turbine 8; the second driving block 81 is slidably provided in the second driving groove 93; wherein the outer diameter of the second rotating ring 44 is the same as the outer diameter of the second fixing ring 31, and the inner diameter of the second rotating ring 44 is the same as the inner diameter of the second fixing ring 31. The center of the second rotating ring 44 is directly opposite to the center of the second fixing ring 31, and the center of the second rotating turbine 8 is eccentrically arranged with the center of the second fixing ring 31.

[0049] Specifically, in this embodiment, the first fixing ring 11 and the second fixing ring 31 have the same structure, the first rotating turbine 5 and the second rotating turbine 8 have the same structure, and the first linkage assembly and the second linkage assembly have the same structure. That is to say, when the liquid impacts the second rotating turbine 8, the second rotating ring 44 and the first rotating ring 41 can perform synchronous reciprocating rotations, so that both ends of the first cleaning strip 42 perform synchronous activities, and both ends of the second cleaning strip 43 perform synchronous activities, preventing entanglement.

[0050] A bend pipe flowmeter that is easy to maintain according to this embodiment, the first limiting groove 45 and the second limiting groove 46 are symmetrically arranged; the second driving block 81 is movably arranged on the second rotating turbine 8; a second thermal spring 82 is arranged between the second driving block 81 and the second rotating turbine 8.

[0051] Specifically, the structure of the second driving block 81 is the same as that of the first driving block 51, and the structure of the second thermal spring 82 is the same as that of the first thermal spring 52. Through the above settings, the second rotating ring 44 and the first rotating ring 41 can perform synchronous reciprocating rotations, so that both ends of the first cleaning strip 42 move synchronously, and both ends of the second cleaning strip 43 move synchronously, preventing entanglement.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A bend flowmeter that is convenient for maintenance, characterized in that: It comprises a water inlet pipe body (1), a curved pipe body (2) and a water outlet pipe body (3); one end of the curved pipe body (2) is connected to the water inlet pipe body (1); the other end of the curved pipe body (2) is connected to the water outlet pipe body (3); an upper differential pressure sensor (21) and a lower differential pressure sensor (22) are arranged opposite to the curved pipe body (2); A first rotating ring (41) is rotatably provided at one end of the curved tube body (2); the first rotating ring (41) is provided with a first cleaning strip (42) and a second cleaning strip (43); the first cleaning strip (42) and the second cleaning strip (43) are respectively in contact with the inner wall of the curved tube body (2); The water inlet pipe body (1) is provided with a first fixed ring (11); the first fixed ring (11) is rotatably provided with a first rotating turbine (5); a first linkage assembly is provided between the first rotating turbine (5) and the first rotating ring (41); the first rotating turbine (5) drives the first rotating ring (41) to rotate through the first linkage assembly; The first linkage assembly comprises a first driving rod (61) and a first linkage rod (62); one end of the first driving rod (61) is hinged to the first fixed ring (11); one end of the first linkage rod (62) is fixedly connected to the first rotating ring (41); the other end of the first driving rod (61) is telescopically movably arranged at the other end of the first linkage rod (62); The first driving rod (61) is provided with a first driving groove (63) along the length direction; the first rotating turbine (5) is provided with a first driving block (51); the first driving block (51) is slidably arranged in the first driving groove (63); One end of the first cleaning strip (42) and one end of the second cleaning strip (43) are symmetrically arranged on the first rotating ring (41); The first driving block (51) is movably arranged on the first rotating turbine (5); a first thermal spring (52) is arranged between the first driving block (51) and the first rotating turbine (5).

2. The elbow flowmeter according to claim 1, which is easy to maintain, is characterized in that: One end of the first cleaning strip (42) and one end of the second cleaning strip (43) are rotatably mounted on the first rotating ring (41); a friction ring (23) is disposed on the inner wall of one end of the curved tube body (2); one end of the first cleaning strip (42) and one end of the second cleaning strip (43) are respectively in contact with the friction ring (23).

3. The elbow flowmeter according to claim 1, which is easy to maintain, is characterized in that: The inner wall of the curved tube body (2) is provided with a limiting outer ring (71); a limiting inner ring (72) is rotatably provided inside the limiting outer ring (71); a limiting gap (73) is formed between the limiting outer ring (71) and the limiting inner ring (72); the middle part of the first cleaning strip (42) and the middle part of the second cleaning strip (43) are respectively arranged in the limiting gap (73).

4. The elbow flowmeter according to claim 1, which is easy to maintain, is characterized in that: The first cleaning bar (42) and the second cleaning bar (43) are both wire brushes.

5. The elbow flowmeter according to claim 1, which is easy to maintain, is characterized in that: A second rotating ring (44) is rotatably provided at the other end of the curved tube body (2); a first limiting groove (45) and a second limiting groove (46) are formed between the outer wall of the second rotating ring (44) and the inner wall of the curved tube body (2); the other end of the first cleaning strip (42) is passed through the first limiting groove (45); and the other end of the second cleaning strip (43) is passed through the second limiting groove (46).

6. The elbow flowmeter according to claim 5, characterized in that: The water outlet pipe body (3) is provided with a second fixing ring (31); the second fixing ring (31) is rotatably provided with a second rotating turbine (8); a second linkage assembly is arranged between the second rotating turbine (8) and the second rotating ring (44); the second rotating turbine (8) drives the second rotating ring (44) to rotate through the second linkage assembly.

7. The elbow flowmeter according to claim 6, characterized in that: The second linkage assembly includes a second driving rod (91) and a second linkage rod (92); one end of the second driving rod (91) is hinged to the second fixing ring (31); a connecting rod (94) is fixedly arranged between one end of the second linkage rod (92) and the second rotating ring (44); the other end of the second driving rod (91) is telescopically arranged at the other end of the second linkage rod (92). The second driving rod (91) is provided with a second driving groove (93) along its length direction; the second rotating turbine (8) is provided with a second driving block (81); the second driving block (81) is slidably arranged in the second driving groove (93).

8. A bend flowmeter that is easy to maintain according to claim 7, characterized in that: The first limiting groove (45) and the second limiting groove (46) are symmetrically arranged. The second driving block (81) is movably arranged on the second rotating turbine (8); a second thermal spring (82) is arranged between the second driving block (81) and the second rotating turbine (8).

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