5results about How to "Valid check" patented technology

The present invention relates to a beam bridge suspension bridge accessory surveying inspection road, more specifically, an inspection road for investigating whether a beam bridge is abnormal, which is composed of a guide fixing part signed on a guard block provided on a slope of the beam bridge; a connecting support part fixedly connected with the upper part of the guide fixing part; and a beam bridge suspension bridge surveying inspection road composed of a surveying and passing prompting part fixedly connected with the lower part of the connecting support part.

System and method embodiments are provided for consistent read in a record-based multi-version concurrency control (MVCC) in database (DB) management systems. In an embodiment, a method in a record-based multi-version concurrent control (MVCC) database (DB) management system for a snapshot consistent read includes copying a system commit transaction identifier (TxID) and a current log record sequence number (LSN) from a transaction log at a start of a reader without backfilling of a commit LSN of a transaction to records that are changed and without copying an entire transaction table by the reader; and determining whether a record is visible according to a record TxID, the commit TxID and a current LSN, wherein a transaction table is consulted only when the record TxID is equal to or larger than a commit TxID at a transaction start.

The invention discloses a gas pipeline aligning device, and relates to the technical field of petroleum and natural gas pipeline construction, the gas pipeline aligning device comprises two groups of aligning clamps, one ends of the two groups of aligning clamps are movably connected with each other, each group of aligning clamps is provided with two aligning rings, and the positions, far away from the movable connecting ends, of the two groups of aligning clamps are fixedly provided with base plates; when the device is used, the two sets of opening aligning clamps are buckled to the opening aligning positions of two pipelines, the two sets of opening aligning clamps are adjusted and driven through the hydraulic device to complete preliminary buckling, the two sets of opening aligning clamps are clamped to the opening aligning positions of the two pipelines, the opening aligning clamps are clamped to the opening aligning positions of the two pipelines, and the opening aligning clamps are clamped to the opening aligning positions of the two pipelines through the hydraulic device. And the driving handle is rotationally adjusted, so that the driving handle drives the driving rod to rotate through the adjusting groove in the bottom of the main adjusting column, and the ejector rod is spirally jacked, so that the fine calibration operation can be quickly completed, and the pipeline alignment convenience and firmness are effectively improved.

A stator segment (26) for a stator of an electrical machine (20) of an industrial wind turbine (10) is provided, comprising at least two support segments (28) which extend at least partially in a circumferential direction and are spaced apart from one another in an axial direction for transmitting loads occurring during operation, a first connecting plate (32) which extends in the axial direction and is inserted into the support segments (28) at an angle to the radial direction, a second connecting plate (34) which extends in the axial direction and is inserted into the support segments (28) at an angle to the radial direction, wherein an intermediate space (36) remains free between the first connecting plate (32) and the second connecting plate (34), and a connecting element (38) which is inserted into the intermediate space (36) in the radial direction for connection to a laminated core (40) carrying stator windings, wherein the connecting element (38) is connected to the first connecting plate (32) by a first weld seam (46) and to the second connecting plate (34) by a second weld seam (48). As a result of the fastening of the laminated core (40) by the connecting element (38) and by the welding of the connecting element (38) in the intermediate space (36) between the connecting plates (32, 34), the stator of the electrical machine (20) can be produced cost-effectively and simply.

The invention relates to a cable guide (44) for connecting phase lines (36) to a rotor of a generator (20) of a wind turbine (10), comprising a hollow tube (46) for axial insertion into a rotor shaft (26) of the rotor and a partition body (48) arranged within the hollow tube (46), wherein the partition body (48) together with the hollow tube (46) delimits channel cross sections (54) which are at least largely separated from one another, and the respective channel cross sections (54) are dimensioned for guiding through at most one of the phase lines (36). Due to the predetermined positioning of the phase lines (36) in the associated channel cross sections (54), the relative position of the phase lines (36) in the rotor shaft (26) of the rotor can be predefined in an easy-to-mount and easy-to-disassemble manner even without a solidified filling material, as a result making a repair-friendly electrically connectable rotor possible.