An integrating instrument housing
By using an eccentric fit design between the journal and the base and bolt fixing, the rotational adaptability and sealing issues of the integrator were resolved, improving the equipment's flexibility and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI KUNKE FLOW INSTR CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-08-04
AI Technical Summary
The existing integrator's threaded connection structure is prone to air leakage due to pipeline vibration, has poor installation adaptability, and the end cap is prone to seizing, making maintenance difficult.
The design employs an eccentric fit between the journal and the base, combined with a limiting part and a sealing ring, to achieve a 300° rotation function. Bolt fixing replaces the traditional screw connection, enhancing sealing performance and structural stability.
It achieves a wide range of rotational adaptability for the integrator, ensures sealing and structural stability, avoids air leakage and end cap seizing, and reduces maintenance costs.
Smart Images
Figure CN224594019U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of instrumentation technology, specifically to a structural improvement of the housing of an integrator. Background Technology
[0002] As an important flow metering instrument, the integrator is widely used in industries such as petroleum, chemical, and gas. In long-term practical applications, the connection method between the integrator and its housing has a crucial impact on its overall performance.
[0003] In existing technologies, the front and rear end covers of the totalizer housing generally adopt a threaded connection structure. The assembly and fixation of the totalizer and the housing are achieved through mechanical locking using a pre-tightening nut. While this structure meets basic connection requirements to a certain extent, it has gradually revealed many insurmountable defects during actual use. These defects not only affect the normal operation of the totalizer but also increase maintenance costs and safety risks. Specific disadvantages are as follows: First, the periodic vibrations generated during the operation of industrial pipelines will continuously act on the threaded pair. In scenarios where thread sealant, PTFE tape, or other sealing and fastening measures are not used, the gap between the thread teeth will gradually widen, causing the pre-tightening nut to fail and ultimately leading to media leakage. This leakage not only affects the metering accuracy of the totalizer but may also pose safety hazards in situations involving the transportation of flammable and explosive media. Second, the existing threaded connection structure significantly restricts the installation adaptability of the totalizer. Due to the fixed angle of the thread engagement, once the meter head is tightened, its display surface orientation is mechanically locked. During on-site maintenance, adjustments to the display angle are often necessary due to compact equipment layouts and limited viewing angles. However, this requires completely loosening the threaded connection and re-aligning and tightening it. Customer sites typically lack specialized tools such as torque wrenches, and manual operation can easily lead to uneven thread stress, increasing the difficulty of adjustment and potentially damaging the sealing structure due to excessive tightening. Thirdly, the sealing system of the front and rear end covers of the integrator conflicts with the threaded connection design. To ensure the O-ring reaches the preset compression for effective sealing, the aluminum alloy end cover and housing threads must be tightened to their limit during assembly. At this point, the metal thread surface undergoes plastic deformation due to excessive contact stress, resulting in irreversible seizing. This seizing phenomenon not only prevents normal disassembly during later maintenance but also causes permanent damage such as thread breakage and end cover deformation if forcibly disassembled, significantly increasing the equipment's repair and replacement costs. Therefore, there is an urgent need for an integrator connection structure that combines reliable sealing, flexible installation and adjustment, and anti-lock function to solve the problems existing in the prior art. Utility Model Content
[0004] The purpose of this application is to provide a housing for a totalizer to solve the problems in the prior art, such as the threaded connection being prone to air leakage due to pipe vibration, the totalizer orientation adjustment being cumbersome and requiring special tools, and the aluminum alloy threads of the front and rear end covers being prone to seizing due to excessive tightening.
[0005] The embodiments of this application can be implemented through the following technical solutions: An integrator housing includes a housing assembly and a base that are connected through the housing assembly. The housing assembly is rotatably engaged with the base via a journal. One end of the journal is located within the inner hole of the base, and the outer circle of the end of the journal located within the inner hole of the base is eccentrically engaged with the inner hole of the base. The eccentricity e between the two is within the range of 0.033-0.05 times the outer diameter of the end of the journal located within the inner hole of the base. The journal is provided with at least two sealing gasket receiving grooves at one end of the inner hole of the base. The at least two sealing gasket receiving grooves are arranged in a ring along the circumference of the journal and are spaced apart along the axial direction. A sealing ring is provided in the sealing gasket receiving groove.
[0006] Furthermore, the journal includes a neck and a limiting portion. One end of the neck is connected to the housing assembly, and the other end is connected to the limiting portion. The neck is limited within the inner hole of the base by the limiting portion and the housing assembly.
[0007] Furthermore, the limiting part is connected to the bottom of the neck, the diameter of the limiting part is larger than the diameter of the neck and larger than the inner diameter of the inner hole of the base, and the limiting part is located at the bottom of the inner hole of the base.
[0008] Furthermore, the top of the base is provided with an annular boss arranged circumferentially along the inner hole of the base, and the bottom of the housing assembly is connected to a base platform. The base platform is connected to the bottom inner cavity of the housing assembly, and the base platform and the lower end face of the housing assembly have a height difference to form an annular groove. The annular groove is sleeved on the outside of the annular boss. The base platform is fixedly connected to the top of the neck, and the neck and the annular boss are arranged coaxially.
[0009] Furthermore, the axis of the inner hole of the base is not collinear with the axis of the annular boss, the outer diameter of the neck is D, the diameter of the inner hole of the base is d, the eccentricity between the two is e, and the eccentricity e is within the range of 0.033-0.05 times the outer diameter D of the neck.
[0010] Furthermore, the initial gap between the outer circle of the neck and the inner hole of the base is 0.1mm-0.2mm.
[0011] Furthermore, the housing assembly includes a watch case and an end cap. The watch case has a side opening on one side, and the end cap is detachably connected to the side opening. The vertical distance between the upper end face of the side opening and the other side of the watch case is less than the vertical distance between the lower end face of the side opening and the other side of the watch case.
[0012] Furthermore, the watch case and the end cap are closed together, and the mating surfaces of the two are sealed with a sealing ring. The watch case and the end cap are fixedly connected by a plurality of bolts evenly distributed around the circumference. One end of the bolt passes through the watch case and the end cap and is connected to the clamp seal.
[0013] Furthermore, one end of the single clamp seal passes through the exposed ends of at least two bolts and closes at one end.
[0014] The integrator housing provided in the embodiments of this application has at least the following beneficial effects: Firstly, it achieves a wide range of rotation of 300° for the integrator. With the eccentric fit design between the journal 3 and the inner hole 21 of the base, combined with the axial limiting of the limiting part 32 and the guiding effect of the boss 22 and the groove, it ensures that the journal 3 can rotate stably to about 300°. This angle range can cover 99% of the usage needs on site, greatly improving the adaptability of the equipment in different installation scenarios. Secondly, it ensures 100% sealing during rotation. The sealing ring on the neck 31 works in conjunction with the double protection structure of the boss 22 and the groove, and the limiting part 32 provides a stable limit on the journal 3, so that the integrator always maintains a good sealing state within the 300° rotation range, effectively blocking the intrusion of external moisture, dust and other substances, completely avoiding air leakage problems, and ensuring the stable operation of the internal components of the equipment. Thirdly, the problem of end cap seizing is solved. Bolts are used to axially press and fix the watch case 11 and end cap 12, replacing the traditional screw connection method. The bolt connection with uniform force ensures that the two fit tightly, which not only avoids the end cap seizing phenomenon caused by threaded fit, but also further enhances the overall airtightness of the case. At the same time, the locking design of clamp seal 13 takes into account both structural stability and anti-tampering security. In summary, this application has achieved optimizations in rotational flexibility, sealing reliability, and structural stability, significantly enhancing the practical value of the integrator. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of an integrator housing according to this application; Figure 2 This is a schematic diagram showing the disassembled state of the housing of an integrator according to this application; Figure 3 This is a schematic diagram of the overall structure of the journal in this application; Figure 4 This is a schematic diagram of the overall structure of the base in this application; Figure 5 This is a schematic diagram of the structure of one end of the housing assembly that mates with the base.
[0016] Numbers in the diagram 1-Housing assembly; 10-Base; 11-Watch case; 12-End cap; 13-Clamp seal; 2-Base; 21-Base inner hole; 22-Annular boss; 3-Junior shaft; 30-Limiting part; 31-Neck; 310-Sealing gasket receiving groove; 32-Wire hole; 33-First connecting hole. Detailed Implementation
[0017] The present application will now be further described based on preferred embodiments and with reference to the accompanying drawings.
[0018] Furthermore, for ease of understanding, various components on the drawings have been enlarged or reduced, but this is not intended to limit the scope of protection of this application.
[0019] Singular forms of words also include plural meanings, and vice versa.
[0020] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, in the description of this application, in order to distinguish different units, the terms "first," "second," etc. are used in this specification, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description and claims of this application.
[0021] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the scope of this application. It should also be noted that, unless otherwise expressly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meaning of these terms in this application.
[0022] like Figures 1 to 5As shown, a totalizer housing includes a housing assembly 1 and a base 2 that are connected through the housing assembly 1. The housing assembly 1 is rotatably engaged with the base 2 via a journal 3. One end of the journal 3 is limited to the inner hole 21 of the base 2, and the outer circle of the end of the journal 3 limited to the inner hole 21 is eccentrically engaged with the inner hole 21. The eccentricity e is within the range of 0.033-0.05 times the outer diameter of the end of the journal 3 limited to the inner hole 21. This design allows the journal 3 to be stopped after rotating a certain angle relative to the base 2, preventing further rotation. This design can meet the usage requirements in most scenarios, allowing workers to adjust the orientation of the meter head of the housing assembly 1 according to the on-site usage environment. It also prevents the internal wiring from being excessively twisted or twisted due to unlimited rotation angle, thus ensuring the integrity and safety of the internal wiring of the totalizer.
[0023] Furthermore, the journal 3 is provided with at least two sealing gasket receiving grooves 310 at one end of the inner hole 21 of the base. The at least two sealing gasket receiving grooves 310 are arranged in a ring along the circumference of the journal 3 and are spaced apart along the axial direction. A sealing ring is provided in the sealing gasket receiving groove 310, so that even when the journal 3 rotates relative to the inner hole 21 of the base, a good sealing effect can be continuously guaranteed.
[0024] Specifically, such as Figure 3 As shown, the journal 3 includes a neck 31 and a limiting part 30. The neck 31 is housed in the inner hole 21 of the base. One end of the neck 31 is connected to the housing assembly 1, and the other end is connected to the limiting part 30. The neck 31 is limited in the inner hole 21 of the base by the limiting part 30 and the housing assembly 1, thereby limiting the axial displacement of the neck 31.
[0025] In some preferred embodiments, the limiting part 30 is connected to the bottom of the neck 31, the diameter of the limiting part 30 is larger than the diameter of the neck 31 and larger than the inner diameter of the inner hole 21 of the base, and the limiting part 30 is located at the bottom of the inner hole 21 of the base.
[0026] Furthermore, such as Figure 4 As shown, the top of the base 2 is provided with an annular boss 22 arranged circumferentially along the inner hole 21 of the base, correspondingly, as... Figure 5As shown, the bottom of the housing assembly 1 is connected to a base 10, which is connected to the bottom inner cavity of the housing assembly 1. The base 10 and the lower end face of the housing assembly 1 have a height difference to form an annular groove. The annular groove is sleeved on the outside of the annular boss 22. The base 10 is fixedly connected to the top of the neck 31, and the neck 31 and the annular boss 22 are coaxially arranged, so that the housing assembly 1, the base 10, and the neck 3 form a linked whole, and effectively limit the axial movement of the neck 3, so that the neck 31 is limited by the housing assembly 1 and the limiting part 30 within the inner hole 21 of the base.
[0027] When the housing assembly 1 is rotated, it can drive the journal 3 to rotate synchronously relative to the base 2, ensuring the consistency of the rotation action. In addition, the cooperation between the annular boss 22 and the annular groove can also block external dust, moisture and other impurities from directly entering the cooperation area between the inner hole 21 of the base and the journal 3 to a certain extent, forming a double protection with the sealing ring on the neck 31, further improving the protective performance of the integrator housing.
[0028] In some preferred embodiments, the axis of the inner hole 21 of the base is not collinear with the axis of the annular boss 22, so that when the neck 31 rotates, the neck 31 can be eccentrically engaged with the inner hole 21 of the base.
[0029] In some preferred embodiments, the outer diameter of the neck 31 is D, the diameter of the inner hole 21 of the base is d, and the eccentricity between them is e. The eccentricity e is in the range of 0.33-0.05 times the outer diameter D of the neck 31. The small eccentricity allows the neck 31 to maintain a stable, interference-free state in most of the rotation range (approximately 0-300 degrees) when rotating relative to the inner hole 21 of the base, ensuring smooth and unobstructed rotation. When the rotation angle approaches 300 degrees, as the eccentric trajectory continues to shift, the outer circle of the neck 31 will just come into contact with the inner wall of the inner hole 21 of the base and form rigid interference, thereby accurately achieving the limiting effect of the preset angle.
[0030] In some preferred embodiments, the initial gap between the outer circle of the neck 31 and the inner hole 21 of the base is 0.1mm-0.2mm. The initial gap can ensure the smooth rotation of the journal and provide a suitable margin for interference locking.
[0031] In some preferred embodiments, such as Figure 3As shown, at least two sealing gasket receiving grooves 310 are provided on the neck 31. The at least two sealing gasket receiving grooves 310 are arranged in a ring around the circumference of the neck 31 and are spaced apart along the axial direction. The sealing gasket receiving grooves 310 are used to accommodate sealing rings. By adopting a multi-seal structure with at least two sealing rings, an effective sealing barrier can be formed. This design can strictly block the communication path between the outside and the inside of the base 2. Even when the journal 3 rotates relative to the inner hole 21 of the base, it can continuously maintain a good sealing effect, effectively preventing dust, moisture and other impurities from entering the inside of the base 2, while avoiding the leakage of lubricating oil and other substances inside the base 2, providing a reliable sealing guarantee for the stable operation of the integrator.
[0032] In some preferred embodiments, the journal 3 is provided with an axially penetrating through hole 32 in the middle, and a plurality of first connecting holes 33 are provided along the circumference of the through hole 32. Correspondingly, the bottom of the housing assembly 1 is also provided with a plurality of second connecting holes 111 that cooperate with the first connecting holes 33. The first connecting holes 33 and the second connecting holes 111 are detachably fixedly connected by bolts.
[0033] The housing assembly 1 includes a watch housing 11 and an end cap 12. The watch housing 11 has a side opening 110 on one side, and the end cap 12 is detachably connected to the side opening 110. The vertical distance between the upper end face of the side opening 110 and the other side of the watch housing 11 is less than the vertical distance between the lower end face of the side opening 110 and the other side of the watch housing 11, so that the side opening 110 has an inclined angle relative to the vertical direction, making it convenient to read the watch data inside the housing from above through the end cap 12.
[0034] In some preferred embodiments, the watch case 11 and the end cap 12 are connected by a cover-and-fit connection. A sealing ring is fitted at the joint surface of the two to achieve a seal. The watch case 11 and the end cap 12 are fixedly connected by a plurality of bolts evenly distributed around the circumference. The fixed connection of the bolts avoids the end cap seizing problem that may occur in traditional screw connections, ensuring the convenience of assembly and disassembly. At the same time, the sealing ring ensures the airtightness of the overall structure and can effectively prevent external moisture, dust and other impurities from entering the interior of the case.
[0035] In some preferred embodiments, one end of the bolt passes through the housing 11 and the end cap 12 in sequence and is connected to the clamp seal 13 to form a linkage lock. If someone attempts to illegally open the housing assembly 1, the clamp seal 13 must be destroyed to loosen the relevant bolt. After the clamp seal 13 is destroyed, obvious marks will be left, which makes it easy for staff to quickly identify whether there is any unauthorized opening, thereby ensuring the safety of the internal components of the integrator and the integrity of the data. This is suitable for scenarios with high requirements for equipment protection.
[0036] In some preferred embodiments, such as Figure 1 As shown, the clamp seal 13 is made of high-strength metal material (such as stainless steel or zinc alloy) and has an integral strip structure. One end of the same clamp seal 13 passes through the exposed ends of at least two bolts and closes at one end, so that a single clamp seal 13 can lock multiple bolts at the same time. Through the structure of one end passing through and the whole piece closing, a linkage anti-tampering mechanism is formed. That is, as long as one bolt attempts to be rotated, it will be rigidly constrained by the clamp seal 13. If the locking is to be broken, the metal strip must be cut or broken, thus leaving obvious damage marks, which effectively improves the anti-tampering performance of the housing assembly 1.
[0037] The specific embodiments of this application have been described in detail above. For those skilled in the art, several improvements and modifications can be made to this application without departing from the principle of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A housing for an integrator, characterized in that, include: A housing assembly (1) and a base (2) are connected through a through-hole. The housing assembly (1) is rotatably engaged with the base (2) via a journal (3). One end of the journal (3) is located at the base inner hole (21) of the base (2). The outer circle of the journal (3) located at the end of the base inner hole (21) is eccentrically engaged with the base inner hole (21). The eccentricity e between the two is within the range of 0.033-0.05 times the outer diameter of the end of the journal (3) located inside the base inner hole (21). The journal (3) is provided with at least two gasket receiving grooves (310) at one end of the inner hole (21) of the base. The at least two gasket receiving grooves (310) are arranged in a ring along the circumference of the journal (3) and are spaced apart along the axial direction. A sealing ring is provided in the gasket receiving groove (310).
2. The integrator housing according to claim 1, characterized in that: The journal (3) includes a neck (31) and a limiting part (30). One end of the neck (31) is connected to the housing assembly (1), and the other end is connected to the limiting part (30). The neck (31) is limited within the inner hole (21) of the base by the limiting part (30) and the housing assembly (1).
3. The integrator housing according to claim 2, characterized in that: The limiting part (30) is connected to the bottom of the neck (31). The diameter of the limiting part (30) is greater than the diameter of the neck (31) and greater than the inner diameter of the inner hole (21) of the base. The limiting part (30) is located at the bottom of the inner hole (21) of the base.
4. The integrator housing according to claim 2, characterized in that: The base (2) is provided with an annular boss (22) arranged circumferentially along the inner hole (21) of the base. The bottom of the housing assembly (1) is connected to a base (10). The base (10) is connected to the bottom inner cavity of the housing assembly (1), and the base (10) and the lower end face of the housing assembly (1) have a height difference to form an annular groove. The annular groove is sleeved on the outside of the annular boss (22). The base (10) is fixedly connected to the top of the neck (31), and the neck (31) and the annular boss (22) are arranged coaxially.
5. The integrator housing according to claim 4, characterized in that: The axis of the inner hole (21) of the base is not collinear with the axis of the annular boss (22). The outer diameter of the neck (31) is D, the diameter of the inner hole (21) of the base is d, and the eccentricity between the two is e. The eccentricity e is within the range of 0.033-0.05 times the outer diameter D of the neck (31).
6. The integrator housing according to claim 2, characterized in that: The initial gap between the outer circle of the neck (31) and the inner hole (21) of the base is 0.1mm-0.2mm.
7. The integrator housing according to claim 1, characterized in that: The housing assembly (1) includes a watch case (11) and an end cap (12). The watch case (11) has a side opening (110) on one side. The end cap (12) is detachably connected to the side opening (110). The vertical distance between the upper end face of the side opening (110) and the other side of the watch case (11) is less than the vertical distance between the lower end face of the side opening (110) and the other side of the watch case (11).
8. The integrator housing according to claim 7, characterized in that: The watch case (11) and the end cap (12) are closed together, and the mating surfaces of the two are sealed with sealing rings. The watch case (11) and the end cap (12) are fixedly connected by a plurality of bolts evenly distributed in the circumference. One end of the bolt passes through the watch case (11) and the end cap (12) and is connected to the clamp seal (13).
9. The integrator housing according to claim 8, characterized in that: One end of the single clamp (13) passes through the exposed ends of at least two bolts and closes at one end.