CN217874270U - A forged steel gate valve with cooling device - Google Patents

Abstract

The utility model discloses a take heat abstractor's forged steel gate valve, including valve body, disk seat, flashboard, valve rod, valve gap, sealing filler, filler pressure cover, packing clamp plate and heat abstractor, heat abstractor includes the cylindricality box, and the valve gap outside sets up the cylindricality box, and the cylindricality box is provided with medium import and medium outlet, and coolant enters the cylindricality box by the medium import and discharges from medium outlet. The utility model discloses an adopt the high temperature resistant seal packing of fibre and graphite and set up the cylindricality box on the valve gap, let cooling medium take away the heat after flowing through the cylindricality box, it is very slow to add this kind of radiating rate of a heat dissipation dish on the valve gap of solution gate valve, the heat dissipation is less than the thermal problem that pipeline medium produced and the high temperature medium of pipeline directly with the temperature through the heat transfer with the temperature transmit to the seal packing chamber in lead to the problem that general filler temperature resistance is not enough and became invalid, realize that the gate valve is stable work and prolong its life under carrying the high temperature medium situation.

Description

A forged steel gate valve with cooling device

technical field

The utility model relates to a gate valve, in particular to a forged steel gate valve with a cooling device.

Background technique

High-temperature gate valves play a very important role in the control systems of modern liquefied petroleum oil extraction pipelines, high-temperature steam pipelines in combustion towers in chemical plants, high-temperature medium transmission pipelines in boilers, and high-temperature medium pipelines for natural gas. However, gate valve sealing packing often fails or is destroyed too quickly due to excessive temperature. The sealing packing is set on the upper part of the bonnet. The current gate valve is equipped with a heat dissipation plate on the bonnet. This form of heat dissipation is very slow, and the heat dissipation is far smaller than the heat generated by the pipeline medium, which cannot fundamentally solve the problem; and the high temperature of the pipeline The medium can directly transfer the temperature to the sealed packing cavity through heat transfer, but the normal operating temperature of the general packing cannot meet the temperature requirements under this working condition, so the packing will fail too quickly.

Utility model content

The purpose of this utility model is to provide a forged steel gate valve with a cooling device in order to overcome the shortcomings and deficiencies of the prior art, by adopting high temperature resistant sealing packing of fiber and graphite and setting a cylindrical box on the valve cover , let the cooling medium flow through the cylindrical box and take away the heat, solve the problem that the heat dissipation speed of the heat dissipation form of the valve cover of the gate valve is very slow, and the heat dissipation is much smaller than the heat generated by the pipeline medium and the pipeline The high-temperature medium directly transfers the temperature to the sealed packing chamber through heat, which leads to the failure of general packing due to insufficient temperature resistance, so as to realize the stable operation of the gate valve and prolong its service life in the case of conveying high-temperature medium.

The technical scheme of the utility model is a forged steel gate valve with a heat dissipation device, including a valve body, a valve seat, a gate plate, a valve stem, a valve cover, a sealing packing, a packing gland, a packing pressure plate and a heat dissipation device. Inside the body, there are two valve seats arranged symmetrically with the valve stem as the center along the channel direction. The gate plate is arranged in the valve body and cooperates with the two valve seats. Above the valve body, the valve stem penetrates the valve cover and extends into the valve body to connect with the gate plate. The valve cover is provided with a sealing groove coaxial with the valve stem, and the sealing packing is embedded In the sealing groove, it is used to form a sealing fit with the valve stem. The material of the sealing packing is a combination of fiber and graphite. The packing pressure plate is connected to the valve cover through a union bolt, and the packing pressure plate is against the packing pressure sleeve. Make the packing gland compress the sealing packing in the sealing groove;

The heat dissipation device includes a cylindrical box, the cylindrical box is arranged outside the valve cover, the cylindrical box is provided with a medium inlet and a medium outlet, and the cooling medium enters the cylindrical box from the medium inlet and flows from the medium Exit discharge.

The above technical solution solves the problem of adding a heat sink to the valve cover of the gate valve by using fiber and graphite high-temperature-resistant sealing packing and setting a cylindrical box on the valve cover to allow the cooling medium to flow through the cylindrical box and take away the heat. The heat dissipation speed of the plate is very slow, and the heat dissipation is much smaller than the heat generated by the pipeline medium. The high-temperature medium in the pipeline directly transfers the temperature to the sealed packing cavity through heat transfer, which leads to the failure of general packing due to insufficient temperature resistance. To solve the problem, realize the stable operation of the gate valve and prolong its service life in the case of conveying high-temperature medium.

Further, the heat dissipation device further includes a liquid level thermometer, and the liquid level thermometer is arranged on the cylindrical box.

The above technical solution ensures the stable operation of the cooling device by installing a liquid level thermometer on the cylindrical box to facilitate observation of the amount and temperature of the cooling medium in the cylindrical box.

Further, the heat dissipation device further includes a temperature sensor, and the temperature sensor is installed on the valve cover.

The above technical solution measures the temperature of the valve cover by installing the temperature sensor on the valve cover, and can control the cooling medium flow of the cylindrical box through the electronic signal of the temperature sensor to ensure that the temperature of the valve cover is always within the normal working range.

Further, more than two partitions are arranged in the cylindrical box, and through holes are arranged on the partitions.

The above technical solution can increase the heat conduction area and the conduction speed of the gate valve through the valve cover by arranging more than two partitions in the cylindrical box and providing through holes on the partitions.

Further, the through holes on each partition are evenly arranged around the center of the corresponding partition, and the positions of the through holes on every two adjacent partitions are staggered.

The above technical solution arranges the through holes on the partition evenly around the center of the partition, and the positions of the through holes on two adjacent partitions are staggered, which can realize the uniform flow of the cooling medium in the cylindrical box and ensure the improvement of the heat transfer efficiency of the cooling medium. .

Further, the heat dissipation device also includes a pipeline I, a pipeline II, a cooler, a medium storage tank, a pump and an electrical control cabinet; The cooling medium cools down, the pump is connected to the medium inlet through the pipeline I, the medium storage tank is connected to the medium outlet through the pipeline II, and the pump sucks the cooling medium from the medium storage tank through The pipeline I enters the cylindrical box, and the cooling medium is discharged into the medium storage tank through the pipeline II; the electrical control cabinet is electrically connected to the temperature sensor and the pump through wires and measured The temperature controls the pump to run and stop.

The above solution controls the operation and stop of the pump through the electrical control cabinet through the temperature measured by the temperature sensor, and solves the problem of adding a heat dissipation plate to the valve cover of the gate valve. The problem of heat solves the problem of automatic control of the temperature of the gate valve, ensuring the stable operation and prolonging the service life of the gate valve in the case of conveying high-temperature medium.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For technical personnel, on the premise of not paying creative labor, obtaining other drawings based on these drawings still belongs to the category of the present utility model.

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of the heat dissipation device of the present invention.

In the figure, 1. valve body; 2. valve seat; 3. gate; 4. valve stem; 5. temperature sensor; 6. valve cover; 61. cylindrical box; 611. clapboard; 6111. through hole; 612. Medium inlet; 613. Medium outlet; 62. Liquid level thermometer; 7. Hex bolt; 8. Sealing packing; 9. Slip bolt; 10. Packing gland; 11. Packing plate; ; 14, valve stem nut; 15 handwheel; 16, cooler; 17, pump; 18, pipeline I; 19, medium storage box; 20, electrical control cabinet; 21 pipeline II.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings.

A forged steel gate valve with cooling device shown in Figure 1-2, including valve body 1, valve seat 2, gate plate 3, valve stem 4, valve cover 6, hexagonal bolt 7, hexagonal nut 12, sealing packing 8 , packing gland 10, packing plate 11, bracket 13, valve stem nut 14, hand wheel 15, wound gasket and cooling device; gate 3 and valve seat 2 are made of martensitic stainless steel, valve body 1, hand wheel 15, Valve stem 4, valve cover 6, packing gland 10, packing plate 11 and bracket 13 are made of carbon structural steel, the material of wound gasket is made of stainless steel plus flexible graphite, and the material of sealing packing 8 is a combination of fiber and graphite;

The valve body 1 is a welded part. Two valve seats 2 are symmetrically arranged inside the valve body 1 along the channel direction with the valve stem 4 as the center. The gate plate 3 is arranged in the valve body 1 and cooperates with the two valve seats 2. The valve cover 6 is fixed on the valve body 1 by the hexagonal bolt 7, the valve stem 4 penetrates the valve cover 6 and extends into the valve body 1 to connect with the gate plate 3 in linkage, the valve cover 6 is provided with a sealing groove coaxial with the valve stem 4, the valve The sealing fit between the cover 6 and the valve body 1 is through the wound gasket, and the valve stem 4 is in sealing fit with the sealing packing 8 in the sealing groove on the upper part of the valve cover 6, and protrudes from the packing gland 10 and the packing pressure plate 11 on the upper part of the sealing groove. The packing pressure plate 11 is tightened with the slip bolt 9 and the hex nut 12 installed on the valve cover 6, the packing pressure plate 11 presses against the packing gland 10 so that the sealing packing 8 is compressed in the sealing groove; then passes through the bracket 13 at the upper end of the valve cover 6 The stem nut 14 on the top is matched, and then connected with the hand wheel 15, the hand wheel 15 drives the valve stem 4 to move, and then drives the gate plate 3 to move up and down, so as to realize the opening and closing of the gate valve. The above-mentioned handwheel 15 is a kind of actuator.

The cooling device includes a cylindrical box 61, a liquid level thermometer 62, a temperature sensor 5, a cooler 16, a pump 17, a pipeline I18, a medium storage box 19 and an electrical control cabinet 20; a cylindrical box 61, a pipeline II21 and a pipe The road I18 is made of stainless steel, and the temperature sensor 5 is installed on the valve cover 6;

The cylindrical box 61 is welded on the outside of the valve cover 6, and a liquid level thermometer 62 is installed on the cylindrical box 61; more than two partitions 611 are welded in the cylindrical box 61, and there are through holes 6111 on the partitions 611; The through holes 6111 on each partition 611 are evenly arranged around the center of the partition 611, and the positions of the through holes 6111 on every two adjacent partitions 611 are staggered; the cylindrical box 61 has a medium inlet 612 and a medium outlet 613;

A cooler 16 and a pump 17 are arranged on the medium storage box 19. The cooler 16 cools down the cooling medium in the medium storage box 19, and the pump 17 sucks the cooling medium from the medium storage box 19 into the cylindrical box 61 through the pipeline I18 and the medium inlet 612. At the same time, the cooling medium enters the medium storage tank 19 through the medium outlet 613 and the pipeline II21; the temperature sensor 5 and the motor of the pump 17 are connected to the electrical control cabinet through wires, and the electrical control cabinet 20 controls the operation of the pump 17 by the temperature measured by the temperature sensor 5 and stop.

The utility model solves the valve cover 6 of the gate valve by adopting high temperature resistant sealing packing 8 of fiber and graphite and setting a cylindrical box 61 on the valve cover 6, allowing the cooling medium to flow through the cylindrical box 61 to take away the heat. Adding a heat dissipation plate on top of this form of heat dissipation has a very slow heat dissipation speed, and the heat dissipation is far less than the heat generated by the pipeline medium. The high-temperature medium in the pipeline directly transfers the temperature to the sealing packing 8 cavities, resulting in general packing. The problem of failure due to insufficient temperature resistance enables the gate valve to work stably and prolong its service life in the case of conveying high-temperature media.

The direction and position terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", " "Bottom", "side", "clockwise", "counterclockwise", etc., are only referring to the direction or position of Figure 1 . Therefore, the terms used in direction and position are used to explain and understand the utility model, rather than to limit the protection scope of the utility model.

The above disclosures are only preferred embodiments of the present utility model, so of course the scope of rights of the present utility model cannot be limited by the embodiments, so equivalent changes made according to the claims of the present utility model are still covered by the present utility model scope.

Claims (6)

1. A forged steel gate valve with a cooling device, comprising a valve body, a valve seat, a gate plate, a valve stem, a valve cover, a sealing packing, a packing gland, and a packing pressure plate. The rod is centered and symmetrically provided with two valve seats, the gate plate is arranged in the valve body and matched with the two valve seats, the valve cover is installed on the valve body through fasteners, and the valve stem It penetrates through the bonnet and extends into the valve body to connect with the gate plate. A sealing groove coaxial with the valve stem is provided on the bonnet, and the sealing packing is embedded in the sealing groove for connecting with the valve stem. To form a sealing fit, the packing pressure plate is connected to the valve cover through union bolts, and the packing pressure plate is pressed against the packing gland, so that the packing gland compresses the sealing packing in the sealing groove, and the characteristics are as follows: The material of the sealing packing is a combination of fiber and graphite; It also includes a heat dissipation device, the heat dissipation device includes a cylindrical box, the cylindrical box is provided outside the valve cover, the cylindrical box is provided with a medium inlet and a medium outlet, and the cooling medium enters the cylindrical box from the medium inlet. box and discharged from the medium outlet. 2. A forged steel gate valve with heat dissipation device according to claim 1, characterized in that: the heat dissipation device further includes a liquid level thermometer, and the liquid level thermometer is arranged on the cylindrical box. 3. A forged steel gate valve with heat dissipation device according to claim 1 or 2, characterized in that: the heat dissipation device further comprises a temperature sensor, and the temperature sensor is installed on the valve cover. 4. A forged steel gate valve with heat dissipation device according to claim 3, characterized in that: more than two partitions are arranged in the cylindrical box, and through holes are arranged on the partitions. 5. A forged steel gate valve with heat dissipation device according to claim 4, characterized in that: the through holes on each partition are evenly arranged around the center of the corresponding partition, and the through holes on every two adjacent partitions The location is staggered. 6. A forged steel gate valve with heat dissipation device according to claim 5, characterized in that: the heat dissipation device also includes pipeline I, pipeline II, cooler, medium storage tank, pump and electrical control cabinet; The cooler and the pump are arranged on the medium storage tank, the cooler cools down the cooling medium in the medium storage tank, the pump is connected to the medium inlet through a pipeline I, and the medium storage tank is connected to the medium inlet through a pipeline II is connected to the medium outlet, and the pump sucks cooling medium from the medium storage tank into the cylindrical box through pipeline I, and at the same time, the cooling medium is discharged into the medium storage tank through pipeline II The electrical control cabinet is electrically connected to the temperature sensor and the pump through wires, and the temperature measured by the temperature sensor is used to control the operation and stop of the pump.

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