CN208946478U - A kind of logging instrument underground protection of instrumentation cap inflatable mold cores - Google Patents

Abstract

The utility model relates to logging instrument underground protection of instrumentation cap technical field of mold, in particular to a kind of logging instrument underground protection of instrumentation cap inflatable mold cores, it includes type core cylinder, core barrel and quick coupling；The type core cylinder is connected through a screw thread with core barrel；The quick coupling is threadedly connected to inside the core barrel；The type core cylinder is sleeve part, and inner hole includes the first inner cylinder face, the second inner cylinder face and internal screw thread；First inner cylinder face and the second inner cylinder face are the mating surface with the core barrel；It is connected between its type core cylinder, core barrel and quick coupling using screw thread, and there are the air pipe lines for importing air in type core cylinder, core barrel and quick coupling；It can effectively shorten pressure maintaining cooling time of wax-pattern, and working efficiency is greatly improved.

Description

A kind of logging instrument underground protection of instrumentation cap inflatable mold cores

Technical field

The utility model relates to logging instrument underground protection of instrumentation cap technical field of mold, in particular to a kind of logging instrument undergrounds Protection of instrumentation cap inflatable mold cores.

Background technique

Petroleum exploration logging instrument is the special of the geophysical parameters such as resistivity, natural potential, the sound wave for measuring borehole wall rock stratum With instrument, it is made of ground installation, downhole instrument and signal transmission system three parts between the two.Logging instrument underground instrument is long Several meters, and it is weighing several tons, it needs to lift and be collided with fulfiling assignment to lift and avoiding, the end thread of downhole instrument is connected with one A protection part with handle, the part are logging instrument underground protection of instrumentation cap.

Logging instrument protective cap is " bucket-shaped ", is made of cylindrical base body and handle, there are two types of existing production technologies, Yi Zhongwei " machining-welding "；Another kind is " model casting-machining ".Second of production technology is machined work compared with the first Sequence is few, and production cost is low, but in the compacting wax-pattern process of model casting, because existing mold type core is solid bar, extraction type core When wax-pattern inner hole form vacuum, to avoid high temperature wax moding shape under internal and external pressure difference, wax-pattern in a mold pressure maintaining cooling time compared with Long, production efficiency is lower.

Utility model content

The purpose of this utility model is that it is in view of the drawbacks of the prior art and insufficient, a kind of logging instrument underground instrument guarantor is provided Helmet inflatable mold cores.

In order to achieve the above purposes, the technical solution adopted by the utility model is:

A kind of logging instrument underground protection of instrumentation cap inflatable mold cores described in the utility model, it include type core cylinder, Core barrel and quick coupling；The type core cylinder is connected through a screw thread with core barrel；The quick coupling is threadedly connected to the type Inside mandrel；

The type core cylinder is sleeve part, and inner hole includes the first inner cylinder face, the second inner cylinder face and internal screw thread；Institute It states the first inner cylinder face and the second inner cylinder face is the mating surface with the core barrel；

The core barrel is ladder axial workpiece, and external includes first step, class rectangle spline, second step, third Step and external screw thread, are internally provided with deep hole and internal screw thread；The first step is equipped with o-ring groove one, is mounted therein with Sealing ring one；The core barrel is cooperated by the sealing ring one and the sealing of the first step and the type core cylinder；The class The key major diameter of rectangular spline is consistent with second inner cylinder face；Uniformly distributed on the second step there are four circular through holes, described Circular through hole is connected to the deep hole；It is furnished with o-ring groove two on the third step, is mounted therein with sealing ring two；It is described Core barrel is cooperated by the sealing ring two and the sealing of the third step and the type core cylinder.

Further, channel space is formed between the key path of the class rectangle spline and second inner cylinder face.

Further, the second step internal diameter is small compared with the second inner cylinder face outer diameter.

Further, annular space is formed between the second step and second inner cylinder face.

Further, the deep hole, circular through hole, annular space, channel space form inner air pipeline.

After adopting the above structure, the utility model has the beneficial effect that a kind of logging instrument underground instrument described in the utility model Device protective cap inflatable mold cores, between type core cylinder, core barrel and quick coupling using screw thread be connected, and type core cylinder, There are the air pipe lines for importing air in core barrel and quick coupling；It can effectively shorten pressure maintaining cooling time of wax-pattern, pole It is big to improve working efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the class rectangle spline of the utility model.

Description of symbols:

1, type core cylinder；2, core barrel；3, quick coupling；4, the first inner cylinder face；5, the second inner cylinder face；6, First Rank；7, class rectangle spline；8, second step；9, third step；10, deep hole；11, sealing ring one；12, channel space；13, round Through-hole；14, sealing ring two；15, annular space.

Specific embodiment

The utility model will be further described below with reference to the accompanying drawings.

As shown in Figure 1 and Figure 2, a kind of logging instrument underground protection of instrumentation cap inflatable mold cores described in the utility model, It includes type core cylinder 1, core barrel 2 and quick coupling 3；The type core cylinder 1 is connected through a screw thread with core barrel 2；The fast quick access First 3 are threadedly connected to inside the core barrel 2；

The type core cylinder 1 is sleeve part, and inner hole includes the first inner cylinder face 4, the second inner cylinder face 5 and interior spiral shell Line；First inner cylinder face 4 and the second inner cylinder face 5 are the mating surface with the core barrel 2；

The core barrel 2 is ladder axial workpiece, it is external include first step 6, class rectangle spline 7, second step 8, Third step 9 and external screw thread are internally provided with deep hole 10 and internal screw thread；The first step 6 is equipped with o-ring groove one, Sealing ring 1 is inside installed；The core barrel 2 passes through the sealing ring 1 and the first step 6 and the type core cylinder 1 Sealing cooperation, wax material flows into when preventing compacting wax-pattern；The key major diameter of the class rectangle spline 7 and second inner cylinder face 5 Unanimously, the class rectangle spline 7 is not used to be keyed, but utilizes between its key path and second inner cylinder face 5 Channel space 12, a part as air pipe line；It is uniformly distributed on the second step 8 that there are four circular through hole 13, the circles Through-hole 13 is connected to the deep hole 10；It is furnished with o-ring groove two on the third step 9, is mounted therein with sealing ring 2 14； The core barrel 2 is cooperated by the sealing ring 2 14 and the sealing of the third step 9 and the type core cylinder 1, to prevent air Leakage.

One kind as the utility model preferably, the key path of the class rectangle spline 7 and second inner cylinder face 5 it Between formed channel space 12, a part as air pipe line.

Preferably, 8 internal diameter of second step is small compared with 5 outer diameter of the second inner cylinder face for one kind as the utility model.

One kind as the utility model preferably forms annular between the second step 8 and second inner cylinder face 5 Space 15 constitutes a part of air pipe line.

One kind as the utility model is preferred, the deep hole 10, circular through hole 13, annular space 15, channel space 12 Form inner air pipeline.

The working principle of the utility model is as follows:

When suppressing wax-pattern using the utility model, before pressure maintaining process and in pressure maintaining process, the quick coupling 3 is to close Closed state, air pipe line disconnect.After the completion of pressure maintaining, 2 screw thread of core barrel is unscrewed first until the sealing ring 1 leaves Sealing station reserves annulus line；Then turn on quick coupling 3, air pipe line connection；Air successively passes through quick coupling 3, depth Enter wax-pattern inner hole after hole 10, circular through hole 13, annular space 15, channel space 12, annulus line, at this time the inside and outside sky of wax-pattern Atmospheric pressure is consistent；It finally extracts the utility model out, takes out wax-pattern.

In the utility model, deep hole 10, circular through hole 13, annular space 15, channel space 12 form inner air pipeline； Quick coupling 3 is opened, outside air is imported；Unscrew 2 screw thread of core barrel until sealing ring 1 leave sealing station, reserve annular Pipeline；Outside air passes through quick coupling 3, and inner air pipeline, annulus line form the integrated air channel for importing air, So as to guarantee that the inside and outside air pressure of wax-pattern is consistent.

The advantages of the utility model, is as follows:

The design is guaranteeing what logging instrument underground protection of instrumentation cap wax-pattern did not deformed in model casting core pulling modulus Under the premise of, effectively shorten pressure maintaining cooling time of wax-pattern, every is shortened 2 minutes, is greatly improved work efficiency.

The above description is only a preferred embodiment of the present invention, therefore all according to described in the utility model patent application range The equivalent change or modification done of structure, feature and principle, be included in the scope of the utility model patent application.

Claims (5)

1. a kind of logging instrument underground protection of instrumentation cap inflatable mold cores, it is characterised in that: it includes type core cylinder (1), type core Axis (2) and quick coupling (3)；The type core cylinder (1) is connected through a screw thread with core barrel (2)；Quick coupling (3) screw thread connects It is internal to be connected to the core barrel (2)；

The type core cylinder (1) is sleeve part, and inner hole includes the first inner cylinder face (4), the second inner cylinder face (5) and interior spiral shell Line；First inner cylinder face (4) and the second inner cylinder face (5) are the mating surface with the core barrel (2)；

The core barrel (2) is ladder axial workpiece, and external includes first step (6), class rectangle spline (7), second step (8), third step (9) and external screw thread are internally provided with deep hole (10) and internal screw thread；The first step (6) is equipped with sealing Groove one is enclosed, sealing ring one (11) is mounted therein with；The core barrel (2) passes through the sealing ring one (11) and the First Rank (6) and the type core cylinder (1) sealing cooperate；The key major diameter of the class rectangle spline (7) and second inner cylinder face (5) one It causes；Uniformly distributed on the second step (8) there are four circular through hole (13), and the circular through hole (13) and the deep hole (10) are even It is logical；It is furnished with o-ring groove two on the third step (9), is mounted therein with sealing ring two (14)；The core barrel (2) passes through The sealing ring two (14) and the third step (9) and the type core cylinder (1) sealing cooperate.

2. a kind of logging instrument underground protection of instrumentation cap inflatable mold cores according to claim 1, it is characterised in that: institute State formation channel space (12) between the key path of class rectangle spline (7) and second inner cylinder face (5).

3. a kind of logging instrument underground protection of instrumentation cap inflatable mold cores according to claim 1, it is characterised in that: institute It is small compared with the second inner cylinder face (5) outer diameter to state second step (8) internal diameter.

4. a kind of logging instrument underground protection of instrumentation cap inflatable mold cores according to claim 1, it is characterised in that: institute State formation annular space (15) between second step (8) and second inner cylinder face (5).

5. a kind of according to claim 1,2,4 any logging instrument underground protection of instrumentation cap inflatable mold cores, special Sign is: the deep hole (10), circular through hole (13), annular space (15), channel space (12) form inner air pipeline.