Pressure guide pipe of differential pressure transmitter

Abstract

A differential pressure transmitter pressure guiding pipe comprises a differential pressure transmitter, a connecting pipe, a sealing ring, a fastening ring plate, a positioning supporting rod, a worm wheel, a worm and a mounting support, a fixing base is arranged on the lower portion of the differential pressure transmitter, the fixing base is provided with a sliding way, the side portion of the differential pressure transmitter is provided with a pressure guiding pipe, the pressure guiding pipe is connected with the connecting pipe, the pressure guiding pipe is provided with a mounting flange, and the connecting pipe is provided with a fixing flange. The installation flange is connected with the fixing flange to form a sealing groove, the sealing groove is matched with the sealing ring, the sealing groove is connected with the sealing ring, the outer portion of the connecting pipe is connected with a fastening ring plate, the fixing flange is attached to the inner side of the fastening ring plate, the fixing flange is provided with a plurality of connecting rod penetrating holes, the installation flange is provided with a plurality of connecting rod grooves, and a plurality of fixing connecting rods are arranged on the inner side of the fastening ring plate. And the fixed connecting rods are matched with the connecting rod penetrating holes and the connecting rod grooves, penetrate through the connecting rod penetrating holes and are connected with the connecting rod grooves.

Description

Technical Field

[0001] The utility model relates to the field of differential pressure transmitters, in particular to a differential pressure transmitter pressure guide tube. Background Art

[0002] The existing patent (Announcement No.: CN117553962A) proposes a differential pressure transmitter pressure pipe, including: a medium delivery pipe; a differential pressure transmitter; a first drainage pipe, the first end of which is installed on the medium delivery pipe, and the second end is connected to the first pressure inlet of the differential pressure transmitter; a second drainage pipe, the first end of which is installed on the medium delivery pipe, and the second end is connected to the second pressure inlet of the differential pressure transmitter. However, in this device, the differential pressure transmitter is connected to the medium delivery pipe through the drainage pipe, and its connection structure is relatively fixed, and the differential pressure transmitter cannot be quickly disassembled and assembled, which reduces the installation efficiency of the differential pressure transmitter and is inconvenient for later replacement and maintenance of the differential pressure transmitter, which has disadvantages. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a differential pressure transmitter pressure pipe which improves the connection tightness and positioning of the flanges by press-fitting and reinforcing the flanges and performing axial braking, thereby strengthening the installation firmness between the differential pressure transmitter and the connecting pipe and preventing the differential pressure transmitter from being separated from the connecting pipe. The fastening assembly can be controlled and adjusted in position by turning a crank, which is convenient to operate, facilitates rapid disassembly and assembly of the differential pressure transmitter, improves the installation efficiency of the differential pressure transmitter, and facilitates the later replacement and maintenance of the differential pressure transmitter.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A differential pressure transmitter pressure pipe comprises a differential pressure transmitter, a connecting pipe, a sealing ring, a fastening ring plate, a positioning support rod, a worm gear, a worm, and a mounting bracket. The lower part of the differential pressure transmitter has a fixed seat, the fixed seat has a slideway, the side of the differential pressure transmitter has a pressure pipe, the pressure pipe is connected to the connecting pipe, the pressure pipe has a mounting flange, the connecting pipe has a fixing flange, the mounting flange is connected to the fixing flange to form a sealing groove, the sealing groove is adapted to the sealing ring, the sealing groove is connected to the sealing ring, the outside of the connecting pipe is connected to the fastening ring plate, the inner side of the fastening ring plate fits the fixing flange, the fixing flange has a plurality of connecting rod through-holes, the mounting flange has a plurality of connecting rod grooves, the inner side of the fastening ring plate has a plurality of fixed connecting rods, the fixed connecting rods are adapted to the connecting rod through-holes and the connecting rod grooves, the fixed connecting rods pass through the connecting rod through-holes, and the fixed connecting rods are connected to the connecting rod grooves.

[0006] The fastening ring plate described in the utility model is divided into an upper fastening ring plate and a lower fastening ring plate. The upper fastening ring plate is connected to the lower fastening ring plate. Upper connecting plates are provided on both sides of the upper fastening ring plate, and lower connecting plates are provided on both sides of the lower fastening ring plate. The lower part of the upper connecting plate is connected to the lower connecting plate. The upper connecting plate has a fixing screw, which passes through the lower connecting plate. The fixing screw is connected to the fixing nut through a thread. The lower part of the lower fastening ring plate has a fixing support plate, and the inner side of the fixing support plate has a positioning support sleeve, which is adapted to the slideway, the positioning support sleeve is connected to the slideway, and the positioning support sleeve slides in the slideway.

[0007] The fixed seat described in the utility model has a placement groove, which is adapted to the worm gear, the placement groove is connected to the worm gear, the outside of the worm gear fits the fixed seat, the inside of the worm gear is connected to a positioning support rod, the outer end of the positioning support rod is connected to a positioning support sleeve through a thread, the inner end of the positioning support rod is connected to the fixed seat and the worm gear in sequence, the worm gear has a driving protrusion, the positioning support rod has a driving groove, the driving protrusion is adapted to the driving groove, and the driving protrusion is connected to the driving groove.

[0008] The positioning support rod described in the utility model has a fastening support rod, the fastening support rod is connected to the fixed seat, the lower part of the fixed seat is connected to the mounting bracket, the mounting bracket has a fixing strip, the fixing strip is connected to the fixing seat, the fixing strip has a limiting clamping plate, the fixing seat has an inner through hole, the positioning support sleeve has a limiting slide groove, the limiting slide groove and the inner through hole are adapted to the limiting clamping plate, the limiting clamping plate passes through the inner through hole, the limiting clamping plate is connected to the limiting slide groove, and the limiting clamping plate slides in the limiting slide groove. Beneficial Effects

[0009] The worm and the worm wheel of the utility model correspond to each other in position and are connected, so that when the worm is driven to rotate by turning the crank, the worm wheel is linked therewith. The worm wheel and the positioning support rod are embedded and plugged in, and the positioning is accurate, which facilitates the rapid and accurate docking and installation between the components, and provides a force fulcrum for the worm wheel to drive the positioning support rod to rotate synchronously. The positioning support rod is positioned and connected with the positioning support sleeve through a thread, so that when the positioning support rod rotates, the positioning support sleeve drives the lower fastening ring plate to perform lateral linear displacement.

[0010] When the differential pressure transmitter of the utility model is installed, the lower fastening ring plate can be moved outward to the maximum extent first, so that when the differential pressure transmitter is installed, the fixed flange does not cause position obstruction to the fixed connecting rod. After the differential pressure transmitter is installed, the lower fastening ring plate can be driven to move inward until it is pressed against the outside of the fixed flange, and the fixed connecting rod passes through the connecting rod through-hole and is embedded in the connecting rod groove, thereby strengthening the tightness and firmness of the connection between the mounting flange and the fixed flange, and limiting the position of the two. By applying axial braking to them, the stability of the connection is improved, and by adding a sealing ring, the sealing of the connection between the mounting flange and the fixed flange is increased.

[0011] The utility model provides an installation support for the worm and its driving component, and the limiting card plate and the fastening card plate respectively increase the connection support between the fixed seat and the positioning support sleeve and the fastening support rod, and limit the positioning support sleeve and the positioning support rod. The fastening card plate allows the positioning support rod to maintain its lateral position unchanged while performing axial rotation to prevent it from moving and disengaging, affecting the linkage effect between the components. The limiting card plate prevents the positioning support sleeve from disengaging and falling from the fixed seat when it is displaced, and allows it to maintain lateral linear displacement to prevent it from being affected by the rotational force of the positioning support rod and following the rotation, thereby improving the structural stability.

[0012] The utility model improves the connection tightness and positioning of the flanges by press-fitting and reinforcing the flanges and axial braking, strengthens the installation firmness between the differential pressure transmitter and the connecting pipe, avoids the differential pressure transmitter and the connecting pipe from being separated, and the fastening component can be controlled and adjusted by turning the crank, which is easy to operate, facilitates the rapid disassembly and assembly of the differential pressure transmitter, improves the installation efficiency of the differential pressure transmitter, and facilitates the later replacement and maintenance of the differential pressure transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the fastening ring plate driving structure described in the utility model.

[0014] Figure 2 This is a schematic diagram of the mounting bracket structure described in the utility model.

[0015] Figure 3 The utility model is a cross-sectional view of a pressure-guiding pipe structure of a differential pressure transmitter.

[0016] Figure 4 This is a cross-sectional view of the positioning support rod driving structure described in the utility model.

[0017] Figure 5 It is a schematic diagram of the connection structure of the fastening ring plate and the connecting pipe described in the utility model.

[0018] Figure 6 This is a schematic diagram of the structure of the lower fastening ring plate described in the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0020] Embodiment 1:

[0021] A differential pressure transmitter pressure pipe, including a differential pressure transmitter 01, a connecting pipe 03, a sealing ring 07, a fastening ring plate 11, a positioning support rod 18, a worm wheel 24, a worm 25, and a mounting bracket 36. The differential pressure transmitter 01 has a fixing seat 20 at the bottom, and the fixing seat 20 has a slideway 19. The differential pressure transmitter 01 has a pressure pipe 02 on the side, the pressure pipe 02 is connected to the connecting pipe 03, the pressure pipe 02 has a mounting flange 04, the connecting pipe 03 has a fixing flange 05, the mounting flange 04 is connected to the fixing flange 05 to form a sealing groove 06, the sealing groove 06 is adapted to the sealing ring 07, the sealing groove 06 is connected to the sealing ring 07, the connecting pipe 03 is externally connected to the fastening ring plate 11, the inner side of the fastening ring plate 11 is fitted with the fixing flange 05, and the fixing flange 05 has There are multiple connecting rod through-holes 09, the mounting flange 04 has multiple connecting rod grooves 10, and the inner side of the fastening ring plate 11 has multiple fixed connecting rods 08, the fixed connecting rod 08 is adapted to the connecting rod through-holes 09 and the connecting rod grooves 10, the fixed connecting rod 08 passes through the connecting rod through-holes 09, and the fixed connecting rod 08 is connected to the connecting rod grooves 10. This device improves the connection tightness and positioning between the flanges by pressing and reinforcing the flanges and axial braking, strengthens the installation firmness between the differential pressure transmitter 01 and the connecting pipe 03, and avoids the differential pressure transmitter 01 and the connecting pipe 03 from being separated, and the fastening assembly can be controlled and adjusted by turning the crank 28, which is easy to operate, convenient for quick disassembly and assembly of the differential pressure transmitter 01, improves the installation efficiency of the differential pressure transmitter 01, and facilitates the later replacement and maintenance of the differential pressure transmitter 01.

[0022] Embodiment 2:

[0023] The fastening ring plate 11 of the utility model is divided into an upper fastening ring plate 111 and a lower fastening ring plate 112. The upper fastening ring plate 111 is connected to the lower fastening ring plate 112. The upper fastening ring plate 111 has upper connecting plates 12 on both sides, and the lower fastening ring plate 112 has lower connecting plates 13 on both sides. The lower part of the upper connecting plate 12 is connected to the lower connecting plate 13. The upper connecting plate 12 has a fixing screw 14, which passes through the lower connecting plate 13. The fixing screw 14 is connected to the fixing nut 15 through a thread. The lower part of the lower fastening ring plate 112 has a fixing support plate 16, and the inner side of the fixing support plate 16 has a positioning support sleeve 17. The positioning support sleeve 17 is adapted to the slideway 19, the positioning support sleeve 17 is connected to the slideway 19, and the positioning support sleeve 17 slides in the slideway 19.

[0024] Embodiment 3:

[0025] The utility model provides a fixed seat 20 with a placement groove 21, the placement groove 21 is adapted to the worm gear 24, the placement groove 21 is connected to the worm gear 24, the worm gear 24 is externally fitted to the fixed seat 20, the worm gear 24 is internally connected to the positioning support rod 18, the outer end of the positioning support rod 18 is threadedly connected to the positioning support sleeve 17, the inner end of the positioning support rod 18 is sequentially connected to the fixed seat 20 and the worm gear 24, the worm gear 24 has a driving protrusion 22, the positioning support rod 18 has a driving groove 23, the driving protrusion 22 is adapted to the driving groove 23, the driving protrusion 22 is connected to the driving groove 23, the worm gear 24 is fixed to the fixed seat 20, and the positioning support rod 18 is threadedly connected to the positioning support sleeve 17, and the inner end of the positioning support rod 18 is sequentially connected to the fixed seat 20 and the worm gear 24. The rod 25 corresponds to and is connected to the worm wheel 24, so that when the worm 25 is driven to rotate by turning the crank 28, the worm wheel 24 is linked therewith. The worm wheel 24 is embedded and plugged into the positioning support rod 18, and the positioning is precise, which facilitates the rapid and accurate docking and installation of the components, and provides a force fulcrum for the worm wheel 24 to drive the positioning support rod 18 to rotate synchronously. The positioning support rod 18 is positioned and connected to the positioning support sleeve 17 through a thread, so that when the positioning support rod 18 rotates, the positioning support sleeve 17 drives the lower fastening ring plate 112 to perform a lateral linear displacement.

[0026] Embodiment 4:

[0027] The positioning support rod 18 of the utility model has a fastening support rod 29, the fastening support rod 29 is connected to the fixed seat 20, the lower part of the fixed seat 20 is connected to the mounting bracket 36, the mounting bracket 36 has a fixing strip 38, the fixing strip 38 is connected to the fixed seat 20, the fixing strip 38 has a limiting card plate 34, the fixed seat 20 has an inner through hole 33, the positioning support sleeve 17 has a limiting slide 35, the limiting slide 35 and the inner through hole 33 are adapted to the limiting card plate 34, the limiting card plate 34 passes through the inner through hole 33, the limiting card plate 34 is connected to the limiting slide 35, and the limiting card plate 34 slides in the limiting slide 35. When the differential pressure transmitter 01 is installed, the lower fastening ring plate 112 can be moved outward to the maximum extent first, so that when the differential pressure transmitter 01 is installed, the fixing flange 0 5 does not cause position obstruction to the fixed connecting rod 08. After the differential pressure transmitter 01 is installed, the lower fastening ring plate 112 can be driven to move inward until it is pressed against the outside of the fixed flange 05, and the fixed connecting rod 08 passes through the connecting rod through hole 09 and is embedded in the connecting rod groove 10, thereby strengthening the tightness and firmness of the connection between the mounting flange 04 and the fixed flange 05, and limiting the position of the two. By applying axial braking to them, the stability of the connection is improved, and by adding a sealing ring 07, the sealing of the connection between the mounting flange 04 and the fixed flange 05 is increased.

[0028] Embodiment 5:

[0029] The fixed strip 38 of the utility model has a fastening card plate 30, the fixed seat 20 has an external through hole 32, and the fastening support rod 29 has a fastening slot 31. The fastening slot 31 and the external through hole 32 are adapted to the fastening card plate 30. The fastening card plate 30 passes through the external through hole 32, and the fastening card plate 30 is connected to the fastening slot 31. The mounting bracket 36 has mounting support plates 37 on both sides. The inner side of the mounting support plate 37 fits the worm 25. The worm 25 is adapted to the worm wheel 24, and the worm 25 is connected to the worm wheel 24.

[0030] Embodiment 6:

[0031] The mounting support plate 37 of the utility model is fitted with the crank handle 28 on the outer side, and the crank handle 28 has a driving shaft rod 26. The mounting support plate 37 has a shaft rod through hole 27, and the shaft rod through hole 27 is adapted to the driving shaft rod 26. The driving shaft rod 26 passes through the shaft rod through hole 27, and the driving shaft rod 26 is connected to the worm 25. The mounting bracket 36 provides a mounting fulcrum for the worm 25 and its driving assembly, and the limiting card plate 34 and the fastening card plate 30 thereof respectively increase the connection fulcrum between the fixed seat 20 and the positioning support sleeve 17 and the fastening support rod 29, and limit the positioning support sleeve 17 and the positioning support rod 18. The fastening card plate 30 allows the positioning support rod 18 to maintain its lateral position unchanged while performing axial rotation to prevent it from moving and disengaging, thereby affecting the linkage effect between the components. The limiting card plate 34 prevents the positioning support sleeve 17 from disengaging and falling from the fixed seat 20 when it is displaced, and keeps it in a lateral linear displacement to prevent it from rotating with the rotation force of the positioning support rod 18, thereby improving the structural stability.

[0032] Embodiment 7:

[0033] Installation steps: First, assemble the fixed seat 20 structure, insert the worm wheel 24 into the placement groove 21 and place it in the fixed seat 20, then connect the positioning support rod 18 to the fixed seat 20 and the worm wheel 24 in sequence, until the outer through hole 32 corresponds to the position of the fastening slot 31, and the driving protrusion 22 is embedded in the driving groove 23, then place the lower fastening ring plate 112 outside the fixed seat 20, and place the positioning support sleeve 17 in the slideway 19, the positioning support sleeve 17 is sleeved on the outside of the positioning support rod 18, and is positioned and connected with it through threads, and the inner through hole 33 is Corresponding to the position of the limiting slide groove 35, the mounting bracket 36 is then installed and fixed to the lower part of the fixing seat 20, and the upper surface of the fixing strip 38 is attached to and fixedly connected with the lower surface of the fixing seat 20, the limiting card plate 34 passes through the inner through hole 33 and is embedded in the limiting slide groove 35, and the fastening card plate 30 passes through the outer through hole 32 and is embedded in the fastening card groove 31, and then the worm 25 is placed on the inner side of the mounting support plate 37, the outer surface of the worm 25 is attached to the inner surface of the mounting support plate 37, and the worm 25 corresponds to and is connected with the worm wheel 24, and finally the crank 28 is Place it outside the mounting support plate 37, and the driving shaft 26 passes through the shaft through-hole 27 and is fixedly connected to the worm 25, the inner surface of the crank handle 28 fits with the outer surface of the mounting support plate 37, and after the structural assembly of the fixing seat 20 is completed, the differential pressure transmitter 01 is placed outside the connecting pipe 03, and the mounting flange 04 is connected to the fixing flange 05, the sealing ring 07 is embedded in the sealing groove 06, the lower fastening ring plate 112 fits the connecting pipe 03 inside, the fixing connecting rod 08 corresponds to the connecting rod through-hole 09 and the connecting rod groove 10, and then the upper fastening ring plate 111 is placed on the upper part of the lower fastening ring plate 112, the interior of the upper fastening ring plate 111 fits the connecting pipe 03, the lower surface of the upper connecting plate 12 fits the upper surface of the lower connecting plate 13, and the fixing screw 14 passes through the lower connecting plate 13, and is fixedly connected to the fixing nut 15 through the thread, and finally, the lower fastening ring plate 112 and the upper fastening ring plate 111 are driven to move inward by rotating the crank 28 until their inner surfaces fit with the outer surface of the fixing flange 05, and the fixing connecting rod 08 passes through the connecting rod through hole 09 and is embedded in the connecting rod groove 10 to complete the installation.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A differential pressure transmitter pressure pipe, characterized in that The differential pressure transmitter (01) comprises a differential pressure transmitter (01), a connecting pipe (03), a sealing ring (07), a fastening ring plate (11), a positioning support rod (18), a worm wheel (24), a worm (25), and a mounting bracket (36). The lower part of the differential pressure transmitter (01) comprises a fixing seat (20), the fixing seat (20) comprises a slideway (19), the side part of the differential pressure transmitter (01) comprises a pressure guide pipe (02), the pressure guide pipe (02) is connected to the connecting pipe (03), the pressure guide pipe (02) comprises a mounting bracket (36), and the fixing seat (20) comprises a slideway (19). The connecting pipe (03) has a fixed flange (05), the mounting flange (04) is connected to the fixed flange (05) to form a sealing groove (06), the sealing groove (06) is adapted to the sealing ring (07), the sealing groove (06) is connected to the sealing ring (07), the connecting pipe (03) is externally connected to a fastening ring plate (11), the inner side of the fastening ring plate (11) is fitted to the fixed flange (05), the fixed flange (05) has a plurality of connecting rod through holes (09), and the mounting flange (04) has a plurality of connecting rod grooves (10), the inner side of the fastening ring plate (11) has a plurality of fixed connecting rods (08), the fixed connecting rods (08) are adapted to the connecting rod through holes (09) and the connecting rod grooves (10), the fixed connecting rods (08) pass through the connecting rod through holes (09), and the fixed connecting rods (08) are connected to the connecting rod grooves (10); the fastening ring plate (11) is divided into an upper fastening ring plate (111) and a lower fastening ring plate (112), the upper fastening ring plate (111) is connected to the lower fastening ring plate ( 112), an upper fastening ring plate (111) has upper connecting plates (12) on both sides, a lower fastening ring plate (112) has lower connecting plates (13) on both sides, the upper connecting plate (12) is connected to the lower connecting plate (13) at the bottom, the upper connecting plate (12) has a fixing screw (14), the fixing screw (14) passes through the lower connecting plate (13), the fixing screw (14) is connected to the fixing nut (15) through a thread, and the lower fastening ring plate (112) has a fixing support plate (16) at the bottom.

2. A differential pressure transmitter pressure lead pipe according to claim 1, characterized in that : A positioning support sleeve (17) is provided on the inner side of the fixed support plate (16), the positioning support sleeve (17) is adapted to the slideway (19), the positioning support sleeve (17) is connected to the slideway (19), and the positioning support sleeve (17) slides in the slideway (19).

3. A differential pressure transmitter pressure lead pipe according to claim 2, characterized in that The fixing seat (20) has a placement groove (21), the placement groove (21) is adapted to the worm wheel (24), the placement groove (21) is connected to the worm wheel (24), the outside of the worm wheel (24) is in contact with the fixing seat (20), the inside of the worm wheel (24) is connected to the positioning support rod (18), the outer end of the positioning support rod (18) is connected to the positioning support sleeve (17) by a thread, the inner end of the positioning support rod (18) is connected to the fixing seat (20) and the worm wheel (24) in sequence, the worm wheel (24) has a driving protrusion (22), the positioning support rod (18) has a driving groove (23), the driving protrusion (22) is adapted to the driving groove (23), and the driving protrusion (22) is connected to the driving groove (23).

4. A differential pressure transmitter pressure lead pipe according to claim 3, characterized in that The positioning support rod (18) comprises a fastening support rod (29), the fastening support rod (29) is connected to the fixing seat (20), the lower part of the fixing seat (20) is connected to the mounting bracket (36), the mounting bracket (36) comprises a fixing strip (38), the fixing strip (38) is connected to the fixing seat (20), the fixing strip (38) comprises a limiting card plate (34), the fixing seat (20) comprises an inner through hole (33), the positioning support sleeve (17) comprises a limiting slide groove (35), the limiting slide groove (35), the inner through hole (33) and the limiting card plate (34) are adapted to each other, the limiting card plate (34) passes through the inner through hole (33), the limiting card plate (34) is connected to the limiting slide groove (35), and the limiting card plate (34) slides in the limiting slide groove (35).

5. A differential pressure transmitter pressure lead pipe according to claim 4, characterized in that The fixing strip (38) has a fastening card plate (30), the fixing seat (20) has an outer through hole (32), the fastening support rod (29) has a fastening card slot (31), the fastening card slot (31) and the outer through hole (32) are adapted to the fastening card plate (30), the fastening card plate (30) passes through the outer through hole (32), the fastening card plate (30) is connected to the fastening card slot (31), the mounting bracket (36) has mounting support plates (37) on both sides, the inner side of the mounting support plate (37) is fitted with the worm (25), the worm (25) is adapted to the worm wheel (24), and the worm (25) is connected to the worm wheel (24).

6. A differential pressure transmitter pressure lead pipe according to claim 5, characterized in that The mounting support plate (37) is fitted with a crank handle (28) on its outer side, the crank handle (28) has a driving shaft (26), the mounting support plate (37) has a shaft through hole (27), the shaft through hole (27) is adapted to the driving shaft (26), the driving shaft (26) passes through the shaft through hole (27), and the driving shaft (26) is connected to the worm (25).

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