CN219996431U - Quick-change clamp head for pressure test of thermal insulation jacket valve - Google Patents

Abstract

The utility model discloses a heat-insulating jacketed valve pressure test quick-change chuck, which relates to the field of valve test auxiliary tools. It includes a valve water inlet flange, a connecting pipe, a nut sleeve and a tie rod sleeve. On the outer circumference of the connecting pipe, the inner wall of the nut sleeve is provided with a limiter that cooperates with the valve inlet flange. The tie rod sleeve has two parts that drive the connecting pipe closer to and away from the valve inlet flange. an action. The utility model has the advantages of simple structure and convenient clamping.

Description

Insulation jacketed valve pressure test quick change chuck

Technical field

The utility model relates to the field of valve testing auxiliary tools, specifically to a pressure-testing quick-change chuck for a heat-insulating jacketed valve.

Background technique

Thermal insulation jacketed valve refers to a closed water inlet cavity (jacket) welded with a thin steel plate on the outside of the valve body so that water can pass through to cool the valve body. Before the valve leaves the factory, the valve is subjected to shell strength test, hydraulic seal test, and air pressure seal test. These tests are all performed on a semi-automatic pressure testing machine for convenience. In addition, the weld sealing performance of the insulation jacket must be tested. In the past, the flange was made with the same specifications as the jacket water inlet flange, and was clamped with bolts and nuts, which could only be operated manually, which was very troublesome.

Utility model content

In order to overcome the shortcomings of the background technology, the utility model provides a pressure-testing quick-change chuck for a thermal insulation jacket valve with a simple structure and convenient clamping.

The technical solution adopted by the utility model is: a heat-insulating jacketed valve pressure test quick-change chuck, which includes a valve water inlet flange, a connecting pipe, a nut sleeve and a tie rod sleeve. The tie rod sleeve is movable and mounted on the connecting pipe. On the outer circumference, the inner wall of the nut sleeve is provided with a limiting member that forms a limiting fit with the valve water inlet flange. The tie rod sleeve has two actions to drive the connecting pipe closer to and away from the valve water inlet flange.

There is a sealing ring between the connecting pipe and the valve inlet flange.

The limiter adopts a split ring baffle, and the inner wall of the nut sleeve is provided with an annular groove for the installation of the limiter.

The outer circumference of the pull rod sleeve is provided with a handle.

The connecting rod is provided with a first annular step corresponding to the front end position of the tie rod sleeve and a second annular step corresponding to the rear end position of the tie rod sleeve.

A rubber hose is connected to the end of the connecting pipe.

The nut sleeve and the tie rod sleeve adopt a threaded fit.

The beneficial effects of the utility model are: in this technical solution, the valve inlet flange is inserted into the nut sleeve, and then a limiter is installed on the inner wall of the nut sleeve to limit its position, and then the connecting pipe is driven to be aligned and connected through the tie rod sleeve After the water inlet flange of the valve is used, the sealing test of the insulation jacket can be carried out. After the test, the connection can be released by disassembling the stopper. It has the advantages of simple structure and convenient clamping.

Description of the drawings

Figure 1 is a schematic structural diagram of a pressure test quick-change chuck for a thermally insulated jacketed valve according to an embodiment of the present invention.

Detailed ways

The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings:

As shown in the figure, the heat-insulating jacketed valve pressure test quick-change chuck includes a valve inlet flange 1, a connecting pipe 2, a nut sleeve 3 and a tie rod sleeve 4. The tie rod sleeve 4 is movable and mounted on the connecting pipe. 2, the inner wall of the nut sleeve 3 is provided with a limiter 5 that forms a limiting fit with the valve water inlet flange 1, and the tie rod sleeve 4 has a method for driving the connecting pipe 2 closer to and away from the valve water inlet. Two actions of the flange 1; this technical solution inserts the valve inlet flange into the nut sleeve, then installs a limiter on the inner wall of the nut sleeve to limit it, and then drives the connecting pipe to align and connect through the tie rod sleeve After the water inlet flange of the valve is used, the sealing test of the insulation jacket can be carried out. After the test, the connection can be released by disassembling the stopper. It has the advantages of simple structure and convenient clamping.

A sealing ring 6 is provided between the connecting pipe 2 and the valve inlet flange 1. The sealing ring can ensure the sealing performance between the connecting pipe 2 and the valve inlet flange 1.

The limiter 5 adopts a split ring baffle, and the inner wall of the nut sleeve 3 is provided with an annular groove 7 for the limiter 5 to be installed. The split ring baffle is a split ring, which has the function of disassembly and assembly. Advantages of convenience.

The nut cover 3 and the tie rod cover 4 adopt a threaded fit; the outer circumference of the tie rod cover 4 is provided with a handle 8, and the handle drives the tie rod cover to rotate, thereby realizing the forward and backward movements of the tie rod cover in the nut cover.

The connecting rod is provided with a first annular step 9 corresponding to the front end position of the tie rod sleeve 4 and a second annular step 10 corresponding to the rear end position of the tie rod sleeve 4. After the tie rod sleeve resists the first annular step, it can drive the connecting pipe closer Valve water inlet flange 1, the second annular step can prevent the tie rod sleeve from being separated from the connecting pipe, and does not need to be installed again.

A rubber hose 11 is connected to the end of the connecting pipe 2 .

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing and simplifying the present invention. The description does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore is not to be construed as a limitation of the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis. Furthermore, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

Note to all technical personnel: Although the present utility model has been described according to the above-mentioned specific embodiments, the inventive idea of the present utility model is not limited to this utility model. Any modification using the inventive idea will be included in the scope of protection of this patent. Inside.

Claims (7)

1. The heat preservation presss from both sides cover valve pressure testing quick change chuck, its characterized in that: the novel valve water inlet flange comprises a valve water inlet flange (1), a connecting pipe (2), a nut sleeve (3) and a pull rod sleeve (4), wherein the pull rod sleeve (4) is movably sleeved on the outer circumference of the connecting pipe (2), a limiting part (5) which is in limiting fit with the valve water inlet flange (1) is arranged on the inner wall of the nut sleeve (3), and the pull rod sleeve (4) is provided with two actions for driving the connecting pipe (2) to be close to and far away from the valve water inlet flange (1).

2. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: a sealing ring (6) is arranged between the connecting pipe (2) and the valve water inlet flange plate (1).

3. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: the limiting piece (5) adopts a split ring baffle, and an annular groove (7) for installing the limiting piece (5) is formed in the inner wall of the nut sleeve (3).

4. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: the outer circumference of the pull rod sleeve (4) is provided with a handle (8).

5. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: the connecting rod is provided with a first annular step (9) corresponding to the front end position of the pull rod sleeve (4) and a second annular step (10) corresponding to the rear end position of the pull rod sleeve (4).

6. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: the tail end of the connecting pipe (2) is connected with a rubber hose (11).

7. The heat preservation jacket valve pressure test quick-change chuck of claim 1, wherein: the nut sleeve (3) is in threaded fit with the pull rod sleeve (4).