Skid-mounted pump set device for preventing pressure building of pipe behind pump

Abstract

The utility model provides a skid-mounted pump set device capable of preventing pressure building of a pipe behind a pump. The skid-mounted pump set device comprises a skid-mounted support, and a feeding pipeline and a pressure relief pipeline are mounted on the skid-mounted support; the feeding pipeline comprises a front-end pipe and a rear-end pipe, one end of the front-end pipe is connected with the intermediate tank, the other end of the front-end pipe is connected with the instrument tee joint, one end of the rear-end pipe is connected with the instrument tee joint, the other end of the rear-end pipe is connected with the metering tank or the reaction kettle, and the instrument tee joint is further provided with a feeding end pressure gauge; a metering pump and a feeding control valve are mounted on the front end pipe, a functional pipe is connected between the front end pipe and the intermediate tank, and a feeding safety relief valve is mounted on the functional pipe; the pressure relief pipeline is arranged between the outlet end of the rear end pipe and the intermediate tank, a pipeline safety pressure relief valve is installed on the pressure relief pipeline, a sampling tee joint and a back pressure valve are installed on the rear end pipe, and a sampling pipe is connected to the sampling tee joint. When residual materials in the pipe generate high temperature and high pressure due to self-decomposition, the safety pressure release valve is automatically opened and communicated into the intermediate tank, and safe pressure release is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of equipment safety, in particular to a pry-mounted pump set device for preventing pressure build-up in the pipe after the pump. BACKGROUND

[0002] In the production process of chemical products, process liquid needs to be quantitatively delivered from an intermediate tank to a metering tank or directly to a reaction kettle. When the metering tank reaches a high liquid level or the amount of feed to the reaction kettle reaches a set value, the feed valve and the metering pump will be interlocked to close. At this time, the material remaining in the pipe between the pump and the tank valve will remain in the pipe. Due to environmental and material characteristics (such as hydrogen peroxide), long-term self-decomposition and heat release will occur. If the weak part of the pipe or the pipe itself leaks or cracks, it will cause fire, explosion, and serious consequences such as burns. Therefore, it is necessary to improve the existing pump set to avoid the danger of pressure build-up in the pipe. SUMMARY

[0003] Therefore, the present application aims to overcome the defects in the prior art and provides a pry-mounted pump set device for preventing pressure build-up in the pipe after the pump.

[0004] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0005] A pry-mounted pump set device for preventing pressure build-up in the pipe after the pump, comprising a pry-mounted support, a feed pipe and a pressure relief pipe are installed on the pry-mounted support; the feed pipe comprises a front end pipe and a rear end pipe, one end of the front end pipe is connected to an intermediate tank, and the other end is connected to an instrument tee; one end of the rear end pipe is connected to the instrument tee, and the other end is connected to a metering tank or a reaction kettle; a feed end pressure gauge is also installed on the instrument tee; a metering pump and a feed control valve are installed on the front end pipe; a function pipe is connected between the front end pipe and the intermediate tank; a feed safety relief valve is installed on the function pipe; the pressure relief pipe is arranged between the outlet end of the rear end pipe and the intermediate tank; a pipe safety relief valve is installed on the pressure relief pipe; a sampling tee and a back pressure valve are installed on the rear end pipe; a discharge end pressure gauge is provided at the outlet end of the rear end pipe; a sampling pipe is connected to the sampling tee; and the back pressure valve is arranged between the sampling tee and the pressure relief pipe.

[0006] Further, the feed control valve is a ball valve.

[0007] Further, a sampling stop valve is installed on the sampling pipe.

[0008] Further, a damper is provided between the feed end pressure gauge and the instrument tee.

[0009] Further, the metering pump is arranged near the rear end pipe, and the feed control valve is arranged near the intermediate tank.

[0010] Further, the pressure relief pipeline is provided with a first backup stop valve.

[0011] Further, the feed safety pressure relief valve is provided with a second backup stop valve between the three-way pipe for instrument.

[0012] Further, the front end pipe and the rear end pipe are arranged transversely and longitudinally along the skid support respectively, and at least two fixing points are arranged between the front end pipe and the skid support, and at least two fixing points are arranged between the rear end pipe and the skid support.

[0013] Further, at least two fixing points are arranged between the pressure relief pipeline and the skid support.

[0014] Compared with the prior art, the application has the following advantages:

[0015] The application provides a skid-mounted pump set device capable of preventing pressure from being built up in the rear pipe, and has high integration and good safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings:

[0017] Fig. 1 The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings:

[0018] Fig. 2 The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings:

[0019] Fig. 3 The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings:

[0020] Fig. 4 The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application and are incorporated herein for illustrative purposes. The illustrative embodiments of the present application and their description serve to explain the present application. In the drawings: DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of the present application, it is to be understood by the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0025] A pry-mounted pump set device for preventing post-pump pipe pressure from being blocked, as shown in Figs. 1 to 4 The supply pipe line includes a front end pipe 2 and a rear end pipe 3, one end of the front end pipe is connected to an intermediate tank 4, the other end is connected to an instrument tee 5, one end of the rear end pipe is connected to the instrument tee, the other end is connected to a metering tank or a reaction kettle, and a supply end pressure gauge 6 is also installed on the instrument tee. Preferably, a damper 7 is provided between the supply end pressure gauge and the instrument tee, which can effectively protect the supply end pressure gauge from being damaged.

[0026] A discharge end pressure gauge 23 is provided at the outlet end of the rear end pipe, a metering pump 8 and a supply control valve 9 are installed on the front end pipe, the metering pump is arranged near the rear end pipe, and the supply control valve is arranged near the intermediate tank. As an example, the supply control valve is a ball valve. A functional pipe 10 is connected between the front end pipe and the intermediate tank, and a supply safety relief valve 11 is installed on the functional pipe;

[0027] The pressure relief pipeline is arranged between the outlet end of the rear end pipe and the intermediate tank, a pipeline safety relief valve 12 is installed on the pressure relief pipeline, a sampling tee 13 and a back pressure valve 14 are installed on the rear end pipe, a sampling pipe 15 is connected to the sampling tee, and the back pressure valve is arranged between the sampling tee and the pressure relief pipeline. In a further improved scheme, a sampling stop valve 16 is installed on the sampling pipe. A first backup stop valve 17 is arranged on the pressure relief pipeline. A second backup stop valve 18 is arranged between the feed safety relief valve and the instrument tee.

[0028] Generally, the front end pipe and the rear end pipe are arranged transversely and longitudinally along the skid support respectively, and at least two fixing points are arranged between the front end pipe and the skid support, and at least two fixing points are arranged between the rear end pipe and the skid support. At least two fixing points are arranged between the pressure relief pipeline and the skid support. In a further improved scheme, the skid support comprises two transverse frame bodies 19 parallel to each other, and the two transverse frame bodies are connected by a plurality of longitudinal frame bodies 20. The front end pipe and the rear end pipe are arranged perpendicularly to each other, the length direction of the front end pipe is consistent with the length direction of the transverse frame body, and the front end pipe is arranged at the upper end of the transverse frame body. The length direction of the rear end pipe is consistent with the length direction of the longitudinal frame body, and preferably, the rear end pipe is arranged at the upper end of the longitudinal frame body.

[0029] The pressure relief pipeline has a U-shaped structure, comprising a longitudinal portion 21 and transverse portions 22 at both ends of the longitudinal portion. The length direction of the transverse portion is consistent with the length direction of the transverse support, and the length direction of the longitudinal portion is consistent with the length direction of the longitudinal support. Preferably, the longitudinal portion is arranged at the upper end of the longitudinal frame body, and one of the transverse portions is arranged at the upper end of the transverse frame body. In addition, the metering pump is fixed to the transverse support and the longitudinal support. Such a structure design enables the feed pipeline and the pressure relief pipeline to be in contact with the skid support more, which can ensure the stability of the feed pipeline and the pressure relief pipeline during use. When the skid support is moved, the feed pipeline, the pressure relief pipeline and the auxiliary devices on the pipelines can move with the skid support at the same time, which is convenient.

[0030] In an optional embodiment, the feed control valve, the pipeline safety relief valve and the feed safety relief valve are connected to a distributed control system (DCS). The DCS is used to remotely and automatically control the opening and closing of the feed control valve. In addition, when the pressure in the front end pipe or the rear end pipe suddenly increases and exceeds the safety limit, the DCS will control the corresponding pressure relief valve to open after receiving the corresponding pressure information. That is, the DCS actively controls the pipeline safety relief valve or the feed safety relief valve to open, performs safety relief on the corresponding pipeline, and sets it without the need for personnel operation, thereby improving the active safety.

[0031] The application provides a pry-mounted pump set device for preventing pressure retention of a post-pump pipe, which has high integration and good safety; when residual material in the pipe generates high temperature and high pressure due to self-decomposition, a safety pressure relief valve in the pipe automatically opens and communicates to an intermediate tank when the pressure in the pipe is higher than a safety set pressure, so that the purpose of safely releasing pressure is achieved, and the residual material liquid in the pipe can be effectively prevented from causing pipe leakage or cracking damage due to self-decomposition overpressure and overtemperature, and the danger caused by pressure retention of the material in the pipe is avoided.

[0032] The above merely describes preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A skid-mounted pump unit device for preventing back pressure buildup in the pump's downstream pipe, characterized in that: The prying support is provided with a feeding pipeline and a pressure relief pipeline; the feeding pipeline comprises a front end pipe and a rear end pipe, one end of the front end pipe is connected with the intermediate tank, the other end is connected with the instrument tee joint, one end of the rear end pipe is connected with the instrument tee joint, the other end is connected with the metering tank or the reaction kettle, and a feeding end pressure gauge is further arranged on the instrument tee joint; a metering pump and a feeding control valve are arranged on the front end pipe, a function pipe is connected between the front end pipe and the intermediate tank, and a feeding safety pressure relief valve is arranged on the function pipe; the pressure relief pipeline is arranged between the rear end pipe outlet end and the intermediate tank, a pipeline safety pressure relief valve is arranged on the pressure relief pipeline, a sampling tee joint and a back pressure valve are arranged on the rear end pipe, a discharge end pressure gauge is arranged at the rear end pipe outlet end, a sampling pipe is connected with the sampling tee joint, and the back pressure valve is arranged between the sampling tee joint and the pressure relief pipeline.

2. The skid-mounted pump package apparatus of claim 1, wherein: The feeding control valve is a ball valve.

3. The skid-mounted pump package of claim 1, wherein: A sampling stop valve is arranged on the sampling pipe.

4. The skid-mounted pump package of claim 1, wherein: A damper is arranged between the feeding end pressure gauge and the instrument tee joint.

5. The skid-mounted pump package of claim 1, wherein: The metering pump is arranged on the side close to the rear end pipe, and the feeding control valve is arranged on the side close to the intermediate tank.

6. The skid-mounted pump package apparatus of claim 1, wherein: A first standby stop valve is arranged on the pressure relief pipeline.

7. The skid-mounted pump package of claim 1, wherein: A second standby stop valve is arranged between the feeding safety pressure relief valve and the instrument tee joint.

8. The skid-mounted pump package apparatus of claim 1, wherein: The front end pipe and the rear end pipe are arranged in the transverse direction and the longitudinal direction of the prying support respectively, at least two fixing points are arranged between the front end pipe and the prying support, and at least two fixing points are arranged between the rear end pipe and the prying support.

9. The skid-mounted pump package of claim 1, wherein: At least two fixing points are arranged between the pressure relief pipeline and the prying support.

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