Integral type double-end forged steel sampling gate

Abstract

The utility model discloses an integral type double-end forged steel sampling gate which comprises a valve body, an upstream gate valve and a downstream gate valve, the upstream gate valve and the downstream gate valve are sequentially arranged along a flow channel of the valve body from front to back, and the valve body is provided with a needle valve and a sampling port between the upstream gate valve and the downstream gate valve. The flow channel in the valve body is cut off through the upstream gate valve and the downstream gate valve, sampling in a non-pressure state can be achieved, meanwhile, sampling in a low-pressure state and sampling in a high-pressure state can be achieved by controlling the upstream gate valve and the downstream gate valve, and therefore different requirements are met for reasonable selection, and safety is higher.

Description

Technical Field

[0001] The utility model relates to an integral double-end forged steel sampling gate. Background Art

[0002] Conventional pipeline sampling valves generally adopt the design method of adding a needle valve and a sampling port to the pipeline. This technical solution has the following disadvantages: when the needle valve is opened, the pressure of the sampling port is consistent with the pipeline pressure, the sample cup of the sampling medium must use a sample cup of the corresponding pressure level, the sampling cup is unique and there is no possibility of pressure reduction sampling. Utility Model Content

[0003] In view of the above problems, the utility model provides an integral double-ended forged steel sampling gate, which effectively solves the problems pointed out in the background technology.

[0004] The technical solution adopted by the utility model is:

[0005] An integral double-end forged steel sampling gate comprises a valve body, and an upstream gate valve and a downstream gate valve arranged in sequence from front to back along the flow channel of the valve body. The valve body is provided with a needle valve and a sampling port between the upstream gate valve and the downstream gate valve.

[0006] Preferably, the upstream gate valve, the downstream gate valve, the needle valve and the sampling port are respectively located in four directions of the valve body.

[0007] Preferably, the valve body is of a square structure, and the upstream gate valve, downstream gate valve, needle valve and sampling port are respectively located in four directions of the directional structure.

[0008] Preferably, the sampling port is located at the bottom of the valve body.

[0009] Preferably, the sampling port is provided with a sampling port screw plug.

[0010] The utility model cuts off the flow channel in the valve body through the upstream gate valve and the downstream gate valve, so as to realize sampling in a pressure-free state. At the same time, the upstream gate valve and the downstream gate valve can also be controlled to realize sampling in a low-pressure state and sampling in a high-pressure state, so as to meet different requirements for reasonable selection and have higher safety.

[0011] The valve body of the utility model adopts an integrated design, and the upstream gate valve, the downstream gate valve, the needle valve and the sampling port are respectively located in four directions of the directional structure, which can shorten the length of the valve body, has a reasonable layout, a compact structure, and reduces the space required for installation.

[0012] The sampling port of the utility model is located at the bottom of the valve body and can be used instead of the pipeline sewage plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 The left side structural diagram of . DETAILED DESCRIPTION

[0015] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0016] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0017] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0019] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0022] like Figure 1-2 As shown, an integral double-ended forged steel sampling gate comprises a valve body 1, and an upstream gate valve 3 and a downstream gate valve 4 arranged in sequence from front to back along a flow channel 2 of the valve body 1, wherein the valve body 1 is provided with a needle valve 5 and a sampling port 6 between the upstream gate valve 3 and the downstream gate valve 4.

[0023] The upstream gate valve 3, downstream gate valve 4, needle valve 5 and sampling port 6 are respectively located in four directions of the valve body 1. For example, the upstream gate valve 3 is arranged at the top of the valve body 1, the downstream gate valve 4 is arranged on the right side of the valve body 1, the needle valve 5 is arranged at the bottom of the valve body 1, and the sampling port 6 is arranged on the left side of the valve body 1.

[0024] The valve body 1 is of a square structure, and the upstream gate valve 3, the downstream gate valve 4, the needle valve 5 and the sampling port 6 are respectively located in four directions of the directional structure.

[0025] The sampling port 6 is located at the bottom of the valve body 1. The sampling port 6 is arranged at the bottom of the valve body 1 and can be used for pipeline sewage discharge at the same time.

[0026] The sampling port 6 is provided with a sampling port screw plug 7. When sampling, the sampling port screw plug 7 is removed and a sampling cup is installed.

[0027] The utility model can realize high-pressure state sampling, low-pressure state sampling and no-pressure state sampling by operating the upstream gate valve 3, the downstream gate valve 4, the needle valve 5 and the sampling port 6.

[0028] High-pressure sampling I, the specific operation method is as follows: fully open the upstream gate valve 3 and the downstream gate valve 4 at both ends of the sampling valve. At this time, the flow channel 2 in the valve body 1 is in a normal working state, so that the medium in the flow channel 2 is in a flowing state, and then open the needle valve 5, remove the sampling port screw plug 7, and put the sampling cup into the sampling port 6 to collect the medium in the flow channel.

[0029] High-pressure sampling II, the specific operation method is as follows: open the upstream gate valve 3 of the sampling valve, close the downstream gate valve 4, at this time the flow channel is in a closed state, then open the needle valve 5, remove the sampling port screw plug 7, and put the sampling cup into the sampling port 6 to collect the medium in the flow channel. In this application, the medium in the flow channel 2 flows from the upstream gate valve 3 to the downstream gate valve 4.

[0030] Sampling in low-pressure state, the specific operation method is as follows: close the upstream gate valve 3 of the sampling valve. Since the pressure on the downstream side will decrease after the upstream gate valve 3 is closed and the medium in the flow channel 2 cannot be completely emptied in a short time, open the needle valve 5 at this time, remove the sampling port screw plug 7, and put the sampling cup into the sampling port 6 to collect the medium in the flow channel. The pressure of the sampling port 6 is consistent with the medium pressure at the downstream end of the valve, thereby achieving medium collection work in a low-pressure state.

[0031] Sampling in a pressure-free state, the specific operation method is as follows: during normal operation of the flow channel 2, the upstream gate valve 3 and the downstream gate valve 4 of the sampling valve are closed successively to make the medium between the valves at both ends of the sampling valve in a static state, and then the needle valve 5 is opened, the sampling port screw plug 7 is removed, and the sampling cup is placed in the sampling port 6 to collect the medium in the flow channel. Since the length between the upstream gate valve 3 and the downstream gate valve 4 is very small, there is not much retained medium. After opening the needle valve 5, a sealed space is formed between the upstream gate valve 3 and the downstream gate valve 4 and the sampling cup of the sampling port 6. A long channel is designed between the sampling port 6 and the needle valve 5. Due to the expansion of the space, the amount of medium in this space is not replenished, so the pressure will drop rapidly, basically achieving the goal of opening the sampling port 6 to complete the collection of the medium in a pressure-free state.

[0032] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. An integral double-ended forged steel sampling gate, characterized in that: The invention comprises a valve body (1), and an upstream gate valve (3) and a downstream gate valve (4) which are arranged in sequence from front to back along a flow channel (2) of the valve body (1); the valve body (1) is provided with a needle valve (5) and a sampling port (6) between the upstream gate valve (3) and the downstream gate valve (4).

2. The integral double-ended forged steel sampling gate according to claim 1, characterized in that: The upstream gate valve (3), the downstream gate valve (4), the needle valve (5) and the sampling port (6) are respectively located at four directions of the valve body (1).

3. The integral double-ended forged steel sampling gate according to claim 2, characterized in that: The valve body (1) is of a square structure, and the upstream gate valve (3), the downstream gate valve (4), the needle valve (5) and the sampling port (6) are respectively located in four directions of the directional structure.

4. The integral double-ended forged steel sampling gate according to claim 3, characterized in that: The sampling port (6) is located at the bottom of the valve body (1).

5. The integral double-ended forged steel sampling gate according to claim 4, characterized in that: The sampling port (6) is provided with a sampling port screw plug (7).

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