CN210830994U

CN210830994U - Temperature and pressure reducing valve for high-low pressure bypass of power plant

Info

Publication number: CN210830994U
Application number: CN201920984208.XU
Authority: CN
Inventors: 陆耀威; 朱峰
Original assignee: Shanghai Pin An High Pressure Control Valve Co ltd
Current assignee: Shanghai Pin An High Pressure Control Valve Co ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-06-23
Anticipated expiration: 2029-06-27

Abstract

The utility model discloses a power plant high-low pressure is relief pressure valve for bypass relates to the relief pressure valve field, including the pipeline, the outside of pipeline is provided with the shell, and the one end of shell is provided with the pressure release pipe, the bottom of pressure release pipe is connected with the water tank, the top of shell is connected with the connecting block, and is provided with the hand valve directly over the connecting block, the bottom of hand valve is connected with the connecting axle of through connection piece, and the bottom of connecting axle is connected with presses the briquetting. The utility model discloses a pipeline, shell, pressure release pipe, water tank, the pressure release chamber that set up have realized when carrying out the pressure release to the inside high temperature steam of pipeline, inside steam can get into the pressure release pipe from the pressure release chamber, then directly get into the water tank through the pressure release pipe inside, inside the water tank itself just is provided with water for high temperature steam becomes water at the inside recondenstion of water tank, cooling structure environmental protection, and whole process is airtight, can not make high temperature air injure the staff.

Description

Temperature and pressure reducing valve for high-low pressure bypass of power plant

Technical Field

The utility model relates to a temperature and pressure reducing valve field specifically is a temperature and pressure reducing valve is used to power plant high-low pressure bypass.

Background

The temperature and pressure reducing valve is a valve which reduces the temperature of a medium by adjusting the flow rate of the medium by controlling the opening of an opening and closing member in a valve body, and simultaneously adjusting the opening of the opening and closing member by the action of the pressure after the valve to keep the pressure after the valve within a certain range, and injecting cooling water into the valve body or the back of the valve to reduce the temperature of the medium.

Current pressure reducing valve that reduces temperature all is cooling earlier when using, then is decompressing the inside steam of pipeline, and the cooling makes steam carry a large amount of drop of water, and the drop of water is very fast along with steam speed when the pipeline is inside to be removed, collides the damage to the valve body production of decompression easily, and current pressure reducing valve that reduces temperature when decompressing pipeline inside, and the steam temperature of pressure release is very high, but current pressure release sets up the outside and does not cool down the mechanism, produces the injury to the staff easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem that the mode of reducing pressure after cooling can make the pressure reducing valve body receive the damage, the outside does not protect the cooling mechanism when current temperature reducing valve pressure release, provides a temperature reducing valve for high-low pressure bypass of power plant.

In order to achieve the above object, the utility model provides a following technical scheme: a temperature and pressure reducing valve for high and low pressure bypass of a power plant comprises a pipeline, wherein a shell is arranged on the outer side of the pipeline, a pressure relief pipe is arranged at one end of the shell, a water tank is connected to the bottom end of the pressure relief pipe, a connecting block is connected to the top end of the shell, a hand valve is arranged right above the connecting block, a connecting shaft penetrating through the connecting block is connected to the bottom end of the hand valve, a pressing block is connected to the bottom end of the connecting shaft, a spring is arranged inside the pressing block, a connecting plate is connected to the bottom end of the spring, a sliding cylinder is arranged on the outer side of the connecting plate, a connecting rod is connected to the bottom end of the connecting plate, a mounting plate is arranged at the bottom end of the connecting rod, a sealing block is arranged on one side of the top end of the mounting plate, a pressure, and the inner side of the cooling pipe is connected with an atomizing nozzle.

Preferably, one side of water tank bottom is provided with the outlet pipe, and the outside of outlet pipe is provided with the control valve, the top of water tank is connected with the water inlet, and the outside of water inlet is provided with sealed lid.

Preferably, the outside of connecting axle is provided with the external screw thread, the inside of connecting block is provided with the internal thread with external screw thread assorted, the hand valve passes through connecting axle and connecting block rotation with the shell and is connected.

Preferably, the pressing block is fixedly connected with the connecting shaft, a clamping groove matched with the spring is formed in the pressing block, and the spring is rotatably connected with the pressing block.

Preferably, the sliding cylinder is connected with the connecting plate in a sliding mode, the sliding cylinder is of a hollow cylinder structure without a top and a bottom, through holes are formed in the sliding cylinder, and the number of the through holes is multiple.

Preferably, the pressure release chamber can be dismantled with the pressure release pipe and be connected, and pressure release chamber and sealed piece swing joint, the outside of cooling tube is connected with the control valve, atomizer's quantity is four groups, four groups atomizer equidistance distributes in the inboard of cooling tube, and four groups atomizer all runs through the pipeline and extends to its inside.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model realizes that when the high temperature steam in the pipeline is decompressed, the steam can enter the inside of the decompression tube from the decompression cavity and then directly enter the inside of the water tank through the decompression tube, the inside of the water tank is provided with water, so that the high temperature steam is condensed into water again in the water tank, the cooling structure is environment-friendly, the whole process is closed, the high temperature air can not hurt workers, the high temperature steam decompression device realizes the decompression of the pipeline in the pipeline firstly, then the high temperature steam in the pipeline is cooled through the cooling ring, the cooling pipe and the atomizing nozzle, and the high temperature steam carrying water beads can be prevented from moving in the pipeline quickly, so as to collide and damage the pressure relief valve body, thereby avoiding the damage of the device and the influence on the use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the cooling ring structure of the present invention.

Fig. 4 is a schematic structural view of the sliding cylinder and the connecting plate of the present invention.

In the figure: 1. a pipeline; 2. a housing; 3. a pressure relief pipe; 4. a water tank; 5. connecting blocks; 6. a connecting shaft; 7. a hand valve; 8. a cooling ring; 9. a spring; 10. a sliding cylinder; 11. a connecting plate; 12. a connecting rod; 13. Mounting a plate; 14. a sealing block; 15. a pressure relief cavity; 16. a cooling pipe; 17. an atomizing spray head; 18. and pressing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a temperature and pressure reducing valve for a high-pressure and low-pressure bypass of a power plant comprises a pipeline 1, a housing 2 is arranged outside the pipeline 1, a pressure relief pipe 3 is arranged at one end of the housing 2, a water tank 4 is connected to the bottom end of the pressure relief pipe 3, a connecting block 5 is connected to the top end of the housing 2, a hand valve 7 is arranged right above the connecting block 5, a connecting shaft 6 penetrating the connecting block 5 is connected to the bottom end of the hand valve 7, a pressing block 18 is connected to the bottom end of the connecting shaft 6, a spring 9 is arranged inside the pressing block 18, a connecting plate 11 is connected to the bottom end of the spring 9, a sliding cylinder 10 is arranged outside the connecting plate 11, a connecting rod 12 is connected to the bottom end of the connecting plate 11, a mounting plate 13 is arranged at the bottom end of the connecting rod 12, a sealing block 14, and the outside of pipeline 1 one end is provided with cooling ring 8, and the internal connection of cooling ring 8 has cooling pipe 16, and the inboard of cooling pipe 16 is connected with atomizer 17.

The utility model discloses a pipeline 1 that sets up, shell 2, pressure release pipe 3, water tank 4, pressure release chamber 15, realized when carrying out the pressure release to 1 inside high temperature steam in pipeline, steam can be followed pressure release chamber 15 and got into pressure release pipe 3 inside, then directly get into inside water tank 4 through pressure release pipe 3, water tank 4 is inside itself just to be provided with water, make high temperature steam condense again in water tank 4 inside and become water, the cooling structure environmental protection, and whole process is airtight, can not make high temperature air injure the staff.

Please refer to fig. 1, a water outlet pipe is disposed on one side of the bottom end of the water tank 4, a control valve is disposed on the outer side of the water outlet pipe, a water inlet is connected to the top end of the water tank 4, a sealing cover is disposed on the outer side of the water inlet, and the sealing cover is rotatably connected to the water tank 4, so that cooling water can be conveniently added into the water tank 4.

Please refer to fig. 2, an external thread is arranged on the outer side of the connecting shaft 6, an internal thread matched with the external thread is arranged inside the connecting block 5, the hand valve 7 is rotatably connected with the housing 2 through the connecting shaft 6 and the connecting block 5, and a sealing gasket is arranged at the joint of the connecting shaft 6 and the connecting block 5 and can prevent high-temperature steam from leaking.

Please refer to fig. 2, the pressing block 18 is fixedly connected to the connecting shaft 6, a slot matching with the spring 9 is disposed inside the pressing block 18, the spring 9 is rotatably connected to the pressing block 18, the pressing block 18 rotates when the hand valve 7 rotates, but the spring 9 is only pressed and is not rotated, so as to prevent the connecting plate 11 connected to the spring 9 from rotating.

Please refer to fig. 4, the sliding cylinder 10 is slidably connected to the connecting plate 11, the sliding cylinder 10 is a hollow cylinder structure without top and bottom, through holes are formed in the sliding cylinder 10, the number of the through holes is multiple, sliding grooves are formed in the sliding cylinder 10, and sliding blocks matched with the sliding grooves are connected to two ends of the connecting plate 11 to ensure that the connecting plate 11 can only slide in the sliding cylinder 10.

Please refer to fig. 3, the pressure relief cavity 15 is detachably connected to the pressure relief tube 3, the pressure relief cavity 15 is movably connected to the sealing block 14, the outer side of the cooling tube 16 is connected to the control valve, the number of the atomizer 17 is four, the four atomizer 17 are equidistantly distributed on the inner side of the cooling tube 16, the four atomizer 17 all penetrate through the pipeline 1 and extend into the pipeline 1, and the inner side of the cooling ring 8 is provided with the sealing ring to prevent the pipeline 1 from leaking when being connected to the atomizer 17.

The working principle is as follows: when the high-temperature steam decompression device is used, high-temperature steam enters from one end of the pipeline 1, the high-temperature steam entering the pipeline 1 moves rapidly in the pipeline 1, at the moment, if the high-temperature steam is required to be decompressed, the hand valve 7 can be rotated, under the rotating action of the hand valve 7, the connecting shaft 6 moves downwards due to the matching screw threads between the outer side of the connecting shaft 6 and the inner side of the connecting block 5, the pressing block 18 is driven to move downwards, the pressing block 18 extrudes the spring 9 in the sliding cylinder 10, the connecting plate 11 moves downwards to drive the connecting rod 12 and the mounting plate 13 to move downwards, the sealing block 14 is separated from the decompression cavity 15, the high-temperature steam enters the decompression cavity 15 to complete decompression, the high-temperature steam exhausted by the pipeline 1 enters the water tank 4 from the decompression pipe 3, and the high-temperature steam reaches the inner part of the water tank 4 due to the fact that the cooling water is arranged in the water, after 4 inside water of water tank is full, can open the control valve of 4 one ends of water tank, the water discharge, 1 inside high-temperature steam of pipeline can be cooled down by atomizer 17 spun cooling water smoke after being let out the pressure, the part that cooling pipe 16 is located the cooling ring 8 outside is connected with the water pump, the control valve in the cooling pipe 16 outside opens the back, the water pump is cooling pipe 16 transport cooling water, cooling water is by atomizer 17 at pipeline 1's inside blowout through cooling pipe 16, for high-temperature steam cooling, the mode of cooling after the pressure release earlier, the damage of relief valve integument has been avoided, consequently, the loss can be reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a temperature and pressure reducing valve is used by high-low pressure by-pass in power plant, includes the pipeline, its characterized in that: a shell is arranged on the outer side of the pipeline, a pressure relief pipe is arranged at one end of the shell, a water tank is connected with the bottom end of the pressure relief pipe, a connecting block is connected with the top end of the shell, a hand valve is arranged right above the connecting block, the bottom end of the hand valve is connected with a connecting shaft penetrating through the connecting block, the bottom end of the connecting shaft is connected with a pressing block, a spring is arranged inside the pressing block, the bottom end of the spring is connected with a connecting plate, and the outer side of the connecting plate is provided with a sliding cylinder, the bottom end of the connecting plate is connected with a connecting rod, the bottom end of the connecting rod is provided with a mounting plate, a sealing block is arranged on one side of the top end of the mounting plate, a pressure relief cavity is arranged on the inner side of the pipeline and positioned on the outer side of the sealing block, and the outside of pipeline one end is provided with the cooling ring, the internal connection of cooling ring has the cooling pipe, and the inboard of cooling pipe is connected with atomizer.

2. The temperature and pressure reducing valve for the high and low pressure bypass of the power plant as claimed in claim 1, wherein: one side of water tank bottom is provided with the outlet pipe, and the outside of outlet pipe is provided with the control valve, the top of water tank is connected with the water inlet, and the outside of water inlet is provided with sealed lid.

3. The temperature and pressure reducing valve for the high and low pressure bypass of the power plant as claimed in claim 1, wherein: the outside of connecting axle is provided with the external screw thread, the inside of connecting block be provided with external screw thread assorted internal thread, the hand valve passes through connecting axle and connecting block rotation with the shell and is connected.

4. The temperature and pressure reducing valve for the high and low pressure bypass of the power plant as claimed in claim 1, wherein: the pressing block is fixedly connected with the connecting shaft, a clamping groove matched with the spring is formed in the pressing block, and the spring is rotatably connected with the pressing block.

5. The temperature and pressure reducing valve for the high and low pressure bypass of the power plant as claimed in claim 1, wherein: the sliding cylinder is connected with the connecting plate in a sliding mode and is of a hollow cylinder structure without a top and a bottom, through holes are formed in the sliding cylinder, and the number of the through holes is multiple.

6. The temperature and pressure reducing valve for the high and low pressure bypass of the power plant as claimed in claim 1, wherein: the pressure relief cavity can be dismantled with the pressure relief pipe and be connected, and pressure relief cavity and sealed piece swing joint, the outside of cooling tube is connected with the control valve, atomizer's quantity is four groups, four groups atomizer equidistance distributes in the inboard of cooling tube, and four groups atomizer all runs through the pipeline and extends to its inside.