阅读说明：本技术 一种具有泄漏检测功能的泄压阀门 (Pressure relief valve with leak testing function ) 是由 曹恒楼 程春风 周皓宸 顾亚明 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种具有泄漏检测功能的泄压阀门,包括阀体、第一管道、第二管道、第三管道、阀杆、液压伸缩缸和控制器,第一管道和第三管道均与阀体连接,第二管道与所述第一管道的端部连接,第三管道的端部固定有压力传感器,所述第一管道内固定有阀座,阀座的上端面具有球冠形的第一凹槽,阀座还具有第一通孔,第二管道具有被所述阀杆穿过的第二通孔,第二通孔内固定有圆环柱形的固定套,固定套内固定有圆环柱形的第一密封套,阀杆能够在所述第一密封套内上下滑动,阀杆的顶部与所述液压伸缩缸连接,底部连接有阀球。本发明的泄压阀门在出现泄漏时能够自动报警。(The invention discloses a pressure relief valve with a leakage detection function, which comprises a valve body, a first pipeline, a second pipeline, a third pipeline, a valve rod, a hydraulic telescopic cylinder and a controller, wherein the first pipeline and the third pipeline are connected with the valve body, the second pipeline is connected with the end part of the first pipeline, the end part of the third pipeline is fixedly provided with a pressure sensor, a valve seat is fixedly arranged in the first pipeline, the upper end surface of the valve seat is provided with a spherical first groove, the valve seat is also provided with a first through hole, the second pipeline is provided with a second through hole through which the valve rod penetrates, a circular cylindrical fixing sleeve is fixedly arranged in the second through hole, a circular cylindrical first sealing sleeve is fixedly arranged in the fixing sleeve, the valve rod can slide up and down in the first sealing sleeve, the top part of the valve rod is connected with the hydraulic telescopic cylinder, and the bottom part of the valve rod is connected with a valve ball. The pressure relief valve can automatically alarm when leakage occurs.)

1. A pressure relief valve with a leakage detection function is characterized by comprising a valve body, a first pipeline, a second pipeline, a third pipeline, a valve rod, a hydraulic telescopic cylinder and a controller, wherein the valve body comprises an inlet and an outlet, the first pipeline and the third pipeline are both connected with the valve body, the second pipeline is connected with the end part of the first pipeline, a pressure sensor is fixed at the end part of the third pipeline, a valve seat is fixed in the first pipeline, a spherical first groove is formed in the upper end surface of the valve seat, a first through hole communicated with the first groove and the end surface of the bottom of the valve seat is further formed in the valve seat, a second through hole penetrated by the valve rod is formed in the second pipeline, a circular cylindrical fixing sleeve is fixed in the second through hole, a circular cylindrical first sealing sleeve is fixed in the fixing sleeve, and the valve rod can slide up and down in the first sealing sleeve, the top of the valve rod is connected with the hydraulic telescopic cylinder, the bottom of the valve rod is connected with a valve ball, and the valve ball can be abutted against the first groove to seal the first through hole; and the hydraulic telescopic cylinder and the pressure sensor are connected with the controller.

2. The pressure relief valve with leak detection function according to claim 1, wherein the valve seat and the first pipe are both circular in cross section.

3. The pressure relief valve with leak detection as recited in claim 1, further comprising a valve cover located above said cover and covering said cover, said valve cover having a third through hole for passing said valve stem therethrough, a second sealing sleeve of a circular cylindrical shape fixed to said third through hole being provided between said third through hole and said valve stem, said valve stem being capable of sliding up and down in said second sealing sleeve.

4. The pressure relief valve with leak detection function according to claim 1, further comprising a medium flow sensing device and a wireless signal transmitting device connected to said controller; the medium flow induction device comprises a fixed ring and a movable ring, the fixed ring is fixed in the second pipeline, the movable ring is connected with the fixed ring through a plurality of compression springs, a cross-shaped bracket is fixed on the inner ring of the movable ring, a mark plate is fixed on the outer side wall of the movable ring, and an identification mark is arranged on the surface of the mark plate; the inner side wall of the second pipeline is provided with a second groove, a light source and an image acquisition device for acquiring the image of the identification mark are arranged in the second groove, and a transparent sealing plate is fixed at the second groove; the light source and the image acquisition device are both connected with the controller; when the first through hole is closed, the image acquisition device cannot acquire the image of the identification mark.

5. The pressure relief valve with leak detection function according to claim 4, wherein the axes of said fixed ring, movable ring and said second duct are collinear; the number of the compression springs is 4, and when the first through hole is closed, the lengths of the 4 compression springs are equal.

6. The pressure relief valve with leak detection function according to claim 5, wherein the controller is capable of controlling the hydraulic telescopic cylinder to be in a first length, and when the hydraulic telescopic cylinder is in the first length, the valve ball closes the first through hole; the controller controls the wireless signal transmitting device to transmit the alarm signal when the hydraulic telescopic cylinder is in the first length and the image acquisition device can acquire the identification mark.

Technical Field

The invention relates to the field of valves, in particular to a pressure relief valve with a leakage detection function.

Background

The valve is mainly arranged in the pipeline and used for opening or closing the pipeline, the type of the valve is diversified according to different structures, some valves are only used for opening and closing the pipeline, no matter the pressure in the pipeline, some valves are also used for automatic pressure relief, and when the pressure in the pipeline is overlarge, the automatic pressure relief can be realized. The automatic pressure relief valve can be automatically opened when the pressure is overlarge, and the tightness is kept when the pressure does not exceed a threshold value, but sometimes the tightness of the valve is in a problem and cannot be found in time.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to overcome the defects of the prior art and provides a pressure relief valve with a leakage detection function.

The technical scheme is as follows: a pressure relief valve comprises a valve body, a first pipeline, a second pipeline, a third pipeline, a valve rod, a hydraulic telescopic cylinder and a controller, wherein the valve body comprises an inlet and an outlet, the first pipeline and the third pipeline are both connected with the valve body, the second pipeline is connected with the end part of the first pipeline, a pressure sensor is fixed at the end part of the third pipeline, a valve seat is fixed in the first pipeline, a spherical first groove is formed in the upper end surface of the valve seat, a first through hole communicated with the first groove and the end surface of the bottom of the valve seat is further formed in the valve seat, a second through hole penetrated by the valve rod is formed in the second pipeline, a cylindrical fixing sleeve is fixed in the second through hole, a cylindrical first sealing sleeve is fixed in the fixing sleeve, the valve rod can slide up and down in the first sealing sleeve, and the top of the valve rod is connected with the hydraulic cylinder, the bottom of the first groove is connected with a valve ball which can be abutted against the first groove to seal the first through hole; and the hydraulic telescopic cylinder and the pressure sensor are connected with the controller.

Further, the cross sections of the valve seat and the first pipeline are both circular.

Further, still including being located fixed cover top covers the valve gap of fixed cover, the valve gap has by the third through-hole that the valve rod passed, the third through-hole with have between the valve rod with the fixed cylindricality of ring second seal cover of third through-hole, the valve rod can be in slide from top to bottom in the second seal cover.

Further, the device also comprises a medium flow sensing device and a wireless signal transmitting device connected with the controller; the medium flow induction device comprises a fixed ring and a movable ring, the fixed ring is fixed in the second pipeline, the movable ring is connected with the fixed ring through a plurality of compression springs, a cross-shaped bracket is fixed on the inner ring of the movable ring, a mark plate is fixed on the outer side wall of the movable ring, and an identification mark is arranged on the surface of the mark plate; the inner side wall of the second pipeline is provided with a second groove, a light source and an image acquisition device for acquiring the image of the identification mark are arranged in the second groove, and a transparent sealing plate is fixed at the second groove; the light source and the image acquisition device are both connected with the controller; when the first through hole is closed, the image acquisition device cannot acquire the image of the identification mark.

Further, the axes of the fixed ring, the movable ring and the second pipeline are collinear; the number of the compression springs is 4, and when the first through hole is closed, the lengths of the 4 compression springs are equal.

Further, the controller can control the hydraulic telescopic cylinder to be in a first length, and when the hydraulic telescopic cylinder is in the first length, the valve ball seals the first through hole; the controller controls the wireless signal transmitting device to transmit the alarm signal when the hydraulic telescopic cylinder is in the first length and the image acquisition device can acquire the identification mark.

Has the advantages that: the pressure relief valve can automatically relieve pressure when the pressure in the valve body is too high. And when the tightness of the valve ball and the first groove is in problem, the valve ball can be found and alarm in time.

Drawings

FIG. 1 is a schematic view of a valve during pressure relief;

FIG. 2 is a schematic view of the valve when no pressure is released;

FIG. 3 is a schematic illustration of a situation where no pressure relief is required and where the sealing of the valve ball and seat is compromised;

FIG. 4 is an enlarged view of a portion of the valve;

fig. 5 is a schematic view of the movable ring.

Detailed Description

Reference numerals: 1, valve seat; 2 a third conduit; 3.1 a first conduit; 3.2 a second conduit; 4, valve seats; 4.1 a first groove; 4.2 first through holes; 5.1 valve ball; 5, a valve rod; 6, fixing a sleeve; 6.1 a first sealing sleeve; 7, a valve cover; 7.1 a second sealing sleeve; 8, fixing a ring; 8.1 compressing the spring; 9, a movable ring; 9.1 a cross-shaped bracket; 9.2 marking the plate; 10. a second groove; 10.2 an image acquisition device; 10.3 sealing plate; 10.4 light source; 11 a pressure sensor; 12 hydraulic telescopic cylinder; 13 wireless signal transmitting means; 14 a controller.

A pressure relief valve with a leakage detection function comprises a valve body 1, a first pipeline 3.1, a second pipeline 3.2, a third pipeline 2, a valve rod 5, a hydraulic telescopic cylinder 12 and a controller 14, wherein the valve body comprises an inlet and an outlet, the first pipeline and the third pipeline are both connected with the valve body, the second pipeline is connected with the end part of the first pipeline, a pressure sensor 11 is fixed at the end part of the third pipeline, a valve seat is fixed in the first pipeline, a spherical first groove 4.1 is formed in the upper end surface of the valve seat, a first through hole 4.2 communicating the first groove and the bottom end surface of the valve seat is further formed in the valve seat, a second through hole penetrated by the valve rod is formed in the second pipeline, a circular cylindrical fixing sleeve 6 is fixed in the second through hole, a circular cylindrical first valve rod sealing sleeve 6.1 is fixed in the fixing sleeve, and the valve rod sealing sleeve 5 can slide up and down in the first sealing sleeve 6.1, the top of the valve rod 5 is connected with the hydraulic telescopic cylinder 12, the bottom of the valve rod is connected with a valve ball, and the valve ball 5.1 can be abutted against the first groove 4.1 to seal the first through hole 4.2; and the hydraulic telescopic cylinder and the pressure sensor are connected with the controller. The valve seat and the first pipeline are both circular in cross section. Still including being located fixed cover top covers the valve gap of fixed cover, valve gap 7 have by the third through-hole that the valve rod passed, the third through-hole with have between the valve rod with the fixed annular column shape's of third through-hole second seal cover 7.1, the valve rod can slide from top to bottom in the second seal cover. The device also comprises a medium flow sensing device and a wireless signal transmitting device 13 connected with the controller; the medium flow induction device comprises a fixed ring 8 and a movable ring 9, the fixed ring is fixed in the second pipeline, the movable ring is connected with the fixed ring through a plurality of compression springs 8.1, a cross-shaped bracket 9.1 is fixed on the inner ring of the movable ring 9, a mark plate 9.2 is fixed on the outer side wall of the movable ring, and the surface of the mark plate is provided with an identification mark; the inner side wall of the second pipeline is provided with a second groove 10.1, a light source 10.4 and an image acquisition device 10.2 for acquiring an image of the identification mark are arranged in the second groove 10.1, and a transparent sealing plate 10.3 is fixed at the second groove; the light source and the image acquisition device are both connected with the controller; when the first through hole is closed, the image acquisition device cannot acquire the image of the identification mark. The axes of the fixed ring, the movable ring and the second pipeline are collinear; the compression springs are 4, and when the first through hole is closed, the lengths of the 4 compression springs 8.1 are equal. The controller can control the hydraulic telescopic cylinder to be in a first length, and when the hydraulic telescopic cylinder is in the first length, the valve ball seals the first through hole; the controller controls the wireless signal transmitting device to transmit the alarm signal when the hydraulic telescopic cylinder is in the first length and the image acquisition device can acquire the identification mark.

According to the pressure relief valve disclosed by the invention, as shown in fig. 1, when the measured value of the pressure sensor is greater than the set threshold value, the controller controls the hydraulic telescopic cylinder to be in the second length, so that the valve ball and the valve seat are in an open state, and therefore pressure relief is realized, at the moment, as shown in fig. 1, the compression spring is compressed under the action of medium fluid, so that the identification plate is just positioned below the image acquisition device, and the identification mark can be acquired.

As shown in fig. 2, when the measured value of the pressure sensor is not greater than the set threshold, the pressure does not need to be released, the valve ball closes the first through hole, and no fluid exists in the second pipeline, so that the compression spring is in an extended state, and the image acquisition device cannot acquire the identification mark.

As shown in fig. 3, the hydraulic telescopic cylinder is at the first length, and at this time, the first through hole is closed, and theoretically, the state of the medium flow sensing device should be the same as that of fig. 2, but at this time, the compression spring is still compressed, so that the image acquisition device acquires the identification mark, and therefore it can be determined that a problem occurs in the sealing property between the valve ball and the valve seat, for example, a gap occurs in the valve ball or the valve seat, and the medium flow still exists in the second pipeline. Thus sending an alarm signal for timely maintenance. Such a valve is particularly suitable for fluid media having a certain transparency. The cross-shaped support can increase the contact surface of the movable ring and impact fluid and increase the sensitivity of the existence of induction fluid.

While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.