Integrated double-acting gate valve

Abstract

The integrated double-acting gate valve comprises a valve body, a valve rod, a valve cover, a support, a valve seat and a gate plate, a channel is formed in the valve body, the valve seat is arranged in the valve body, the gate plate is arranged in the valve seat in a liftable mode, the valve cover is detachably and fixedly arranged at the position, corresponding to the gate plate, of the valve body, and the support is fixedly arranged on the valve cover. The valve rod penetrates through the support and the valve cover and is rotationally connected with the flashboard, the two pressure tapping pipes are symmetrically arranged in the flashboard, the inductor is fixedly arranged on the valve cover, ports, located in the valve cover, of the pressure tapping pipes correspond to a connector of the inductor, and the flashboard operably drives the pressure tapping pipes to be communicated with the connector of the inductor. According to the integrated double-acting gate valve, the valve rod drives the gate plate to be opened, so that the pressure tapping pipe on the gate plate is communicated with the connector of the sensor, the gate valve and the orifice plate flowmeter exist in the same device at the same time, occupied space is reduced, and cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of flow measurement, and in particular to an integrated double-acting gate valve. Background Art

[0002] The flat gate valve is one of the commonly used valves in the field of engineering technology. Its structure is mainly composed of valve body, valve seat, parallel gate, valve stem, valve cover, and valve stem drive mechanism. The valve seat and parallel gate adopt metal hard seal or soft seal. The orifice flowmeter is a throttling device for fluid flowing through the pipeline. It causes local contraction near the throttling part, increases the flow rate, and generates static pressure difference on the upstream and downstream sides. The standard orifice plate is matched with a multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter) to form a high range ratio differential pressure flow device, so as to measure the flow of gas, steam, liquid and natural gas.

[0003] In industrial production, it is often necessary to control and measure fluids. At present, flat gate valves and orifice flowmeters are usually used to cut off and measure fluids respectively. This method requires two devices, which not only takes up space but also has high costs. Therefore, a double-acting device integrating a flat gate valve and an orifice flowmeter is needed to solve the above problems. Summary of the invention

[0004] The present application provides an integrated double-acting gate valve, which solves the technical problem in the prior art that the gate valve and the orifice flow meter are used together and occupy space, resulting in high installation costs.

[0005] The present application provides an integrated double-acting gate valve, including a valve body, a valve stem, a valve cover, a bracket, a valve seat and a gate plate, wherein a channel is arranged in the valve body, the valve seat is arranged in the valve body, the gate plate can be raised and lowered in the valve seat, the valve cover is detachably fixedly arranged in a position of the valve body corresponding to the lifting and lowering of the gate plate, the bracket is fixedly arranged on the valve cover, the valve stem passes through the bracket and the valve cover and is rotatably connected to the gate plate, and also includes a pressure taking pipe and a sensor, wherein two pressure taking pipes are symmetrically arranged in the gate plate, the sensor is fixedly arranged on the valve cover, the port of the pressure taking pipe located in the valve cover is arranged corresponding to the interface of the sensor, and the gate plate can operably drive the interface between the pressure taking pipe and the sensor to be connected.

[0006] In some embodiments, a quick connector is fixedly provided at the end of the pressure taking tube corresponding to the sensor, and the quick connector can be operably inserted into the interface of the sensor.

[0007] In some embodiments, a maintenance chamber is provided on the side of the valve body, the maintenance chamber and the valve cover are symmetrically arranged on both sides of the valve body, and the gate plate can be operably inserted into the maintenance chamber.

[0008] In some embodiments, an orifice plate is fixedly provided at the bottom of the inspection chamber, the orifice plate passes through the valve seat, the flow hole on the orifice plate is located in the valve body, the flow hole is coaxial with the channel of the valve body, a sliding cavity is opened at the lower end of the gate plate, the orifice plate is inserted into the sliding cavity, and the gate plate and the orifice plate can move relative to each other.

[0009] In some embodiments, the gate hole of the gate plate is arranged on its lower side, and the flow hole of the orifice plate is arranged on its upper side. When the gate plate is fully opened, the gate hole is coaxial with the channel of the valve body, and the diameter of the flow hole is smaller than the diameter of the gate hole.

[0010] In some embodiments, the outer wall of the gate plate is provided with a first sealing layer, the first sealing layer is sealed with the valve seat, and the inner wall of the sliding cavity is provided with a second sealing layer, the second sealing layer is sealed with the orifice plate.

[0011] In some embodiments, the material of the first sealing layer and the second sealing layer is rubber or polytetrafluoroethylene.

[0012] In some embodiments, a filter screen is provided at the port of the pressure taking pipe located in the valve body.

[0013] In some embodiments, a hand wheel is further included, the hand wheel is rotatably disposed on the bracket, and the hand wheel is threadedly connected to the valve stem.

[0014] A flow measurement system comprises the integrated double-acting gate valve as described in any one of the above technical solutions, wherein a clock module and a communication module are arranged in the sensor, and both the clock module and the communication module are electrically connected to the sensor.

[0015] The beneficial effects of this application are as follows:

[0016] The integrated double-acting gate valve provided by the present invention has a valve stem driving the gate plate to open, so that the pressure-taking pipe on the gate plate is connected to the interface of the sensor, thereby realizing the simultaneous existence of the gate valve and the orifice flowmeter in the same device, reducing space occupancy and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0018] Figure 1 Schematic diagram of the closed state of the integrated double-acting gate valve provided in this application;

[0019] Figure 2 Schematic diagram of the open state of the integrated double-acting gate valve provided in this application.

[0020] Among them, 1-valve body; 2-valve stem; 3-valve cover; 4-bracket; 5-valve seat; 6-gate; 7-channel; 8-pressure pipe; 9-sensor; 10-interface; 11-quick connector; 12-maintenance room; 13-orifice plate; 14-sliding chamber; 15-gate hole; 16-flow hole; 17-handwheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] The embodiment of the present application provides an integrated double-acting gate valve, thereby solving the technical problem in the prior art that the gate valve and the orifice flow meter are used together and occupy space, resulting in high installation costs.

[0025] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0026] like Figure 1 , Figure 2As shown, the present application provides an integrated double-acting gate valve, including a valve body 1, a valve stem 2, a valve cover 3, a bracket 4, a valve seat 5 and a gate plate 6, wherein a channel 7 is arranged in the valve body 1, the valve seat 5 is arranged in the valve body 1, the gate plate 6 can be lifted and lowered in the valve seat 5, the valve cover 3 is detachably fixedly arranged in a position of the valve body 1 corresponding to the lifting and lowering of the gate plate 6, the bracket 4 is fixedly arranged on the valve cover 3, the valve stem 2 passes through the bracket 4 and the valve cover 3 and is rotatably connected to the gate plate 6, wherein the gate valve composed of the valve body 1, the valve stem 2, the valve cover 3, the bracket 4, the valve seat 5 and the gate plate 6 is an existing gate valve, and the various structures are in a conventional matching relationship with the existing gate valve, and the above specific structural matching relationship is not elaborated in detail here;

[0027] The integrated double-acting gate valve also includes a pressure-taking pipe 8 and a sensor 9. The sensor 9 is a module in the orifice flowmeter for measuring the water pressure in the pressure-taking pipe 8. The specific method of obtaining the water pressure and measuring the flow rate is the same as that of the existing orifice flowmeter. The present invention is not an improvement on the measurement method of the orifice flowmeter. The specific improvements of the present invention are as follows: the pressure-taking pipe 8 is symmetrically arranged in the gate plate 6, and the sensor 9 is fixedly arranged on the valve cover 3. The port of the pressure-taking pipe 8 located in the valve cover 3 is arranged corresponding to the interface 10 of the sensor 9. The pressure-taking pipe 8 is located on the valve cover 3 and the interface 10 of the sensor 9 are arranged along the movement direction of the gate 6, and the port of the pressure-taking tube 8 located in the valve body 1 is located on the side of the gate 6. Specifically, the pressure-taking tube 8 can be an L-shaped through hole opened inside the gate 6, so that the pressure-taking tube 8 can introduce the liquid in the valve body 1 into the interface 10 of the sensor 9, and the gate 6 can operably drive the pressure-taking tube 8 and the interface 10 of the sensor 9 to be connected. Of course, when the pressure-taking tube 8 and the interface 10 of the sensor 9 are connected, the pressure-taking tube 8 and the sensor 9 can be sealed and matched to ensure that the pressure taken by the pressure-taking tube 8 is accurate.

[0028] Optionally, a filter screen is provided at the port of the pressure taking pipe 8 located in the valve body 1 to prevent residues from entering the pressure taking pipe 8 and causing blockage.

[0029] In the process of driving the valve stem 2 so that the valve stem 2 drives the gate plate 6 to open, the pressure taking pipe 8 on the gate plate 6 is connected to the interface 10 of the sensor 9 and conducts the orifice flowmeter, thereby realizing the simultaneous existence of the gate valve and the orifice flowmeter in the same device, reducing space occupancy and saving costs.

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Preferably, a quick connector 11 is fixedly provided at the end of the pressure taking tube 8 corresponding to the sensor 9, and the quick connector 11 can be operably inserted into the interface 10 of the sensor 9. The quick connector 11 and the interface 10 are Luer connectors or quick-insert male and female connectors. During the opening of the gate 6, the gate 6 moves in the valve cover 3. When the gate 6 is fully opened, the gate 6 drives the quick connector 11 to insert into the interface 10 of the sensor 9. The initial state of the quick connector 11 is a closed state. The quick connector 11 automatically opens after matching with the interface 10 of the sensor 9. The quick connector 11 is an existing mature product, and its specific working principle is not repeated here. The liquid in the pressure taking tube 8 can enter the sensor 9 through the quick connector 11, so that the liquid channel 7 of the orifice flowmeter is connected while the gate valve is fully opened. The structure is simple and ingenious, and space is saved.

[0032] The side of the valve body 1 is provided with an inspection chamber 12 which is mounted on the valve body 1 by bolts to facilitate replacement of orifice plates 13 of different types. The inspection chamber 12 and the valve cover 3 are symmetrically arranged on both sides of the valve body 1 , and the gate plate 6 can be operably inserted into the inspection chamber 12 .

[0033] An orifice plate 13 is fixedly provided at the bottom of the inspection chamber 12, and the orifice plate 13 passes through the valve seat 5. The flow hole 16 on the orifice plate 13 is located in the valve body 1, and the flow hole 16 is coaxial with the channel 7 of the valve body 1. A sliding cavity 14 is opened at the lower end of the gate plate 6, and the orifice plate 13 is inserted into the sliding cavity 14. The gate plate 6 and the orifice plate 13 can move relative to each other.

[0034] The gate hole 15 of the gate plate 6 is arranged on the lower side thereof, and the flow hole 16 of the orifice plate 13 is arranged on the upper side thereof. When the gate plate 6 is fully opened, the gate hole 15 is coaxial with the channel 7 of the valve body 1, and the diameter of the flow hole 16 is smaller than the diameter of the gate hole 15, so that the gate hole 15 and the orifice plate 13 are concentric after the gate plate 6 is fully opened, so that the gate plate 6 and the orifice plate 13 form a reduced diameter channel 7 of the orifice flowmeter, and the structure is simple.

[0035] When the gate plate 6 is closed, the internal channel 7 of the valve body 1 is blocked. During the opening process of the gate plate 6, the gate plate 6 and the orifice plate 13 cooperate through the sliding cavity 14, the gate plate 6 is fully opened, the gate hole 15 and the flow hole 16 are coaxial with the channel 7 of the valve body 1, so that the gate valve is opened and the orifice flowmeter is assembled. The operation is simple and two functions can be realized through one operation.

[0036] Furthermore, a first sealing layer is provided on the outer wall of the gate plate 6, and the first sealing layer is sealed with the valve seat 5. A second sealing layer is provided on the inner wall of the sliding cavity 14, and the second sealing layer is sealed with the orifice plate 13. The materials of the first sealing layer and the second sealing layer are rubber or polytetrafluoroethylene. During the up and down movement of the gate plate 6, the first sealing layer seals between the gate plate 6 and the valve seat 5, and the second sealing layer seals between the gate plate 6 and the orifice plate 13, so that the valve body 1 has a good sealing effect and avoids water leakage at the valve body 1 causing unstable liquid pressure.

[0037] Furthermore, the gate valve also includes a handwheel 17, which is rotatably arranged on the bracket 4. The handwheel 17 is threadedly connected to the valve stem 2. By rotating the handwheel 17, the handwheel 17 is rotatably connected to the bracket 4, so that the valve stem 2 drives the gate plate 6 to move up and down.

[0038] The present invention also provides a flow measurement system, comprising the integrated double-acting gate valve described in any one of the above technical solutions, wherein a clock module and a communication module are arranged in the sensor, and the clock module and the communication module are both electrically connected to the sensor.

[0039] After the gate valve is opened, the interface between the pressure taking tube and the sensor is connected. During the measurement of small flow liquids at night, the battery power in the sensor is limited and is not enough to support high-frequency collection throughout the night. The clock module presets the time period. During the preset time period, such as 2-4 a.m., the clock module sends a signal to the sensor at regular intervals, such as once every 1 minute. The sensor collects the current flow rate, and the collected flow information is transmitted to the external processor through the communication module for collection and processing. The current liquid flow can be measured at a fixed time and frequency. The flow data is richer and more accurate, reducing the situation where data loss due to insufficient sensor power is caused.

[0040] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An integrated double-acting gate valve, characterized in that: It includes a valve body, a valve stem, a valve cover, a bracket, a valve seat and a gate plate, wherein a channel is arranged in the valve body, the valve seat is arranged in the valve body, the gate plate can be raised and lowered in the valve seat, the valve cover is detachably fixedly arranged in a position of the valve body corresponding to the lifting and lowering position of the gate plate, the bracket is fixedly arranged on the valve cover, the valve stem passes through the bracket and the valve cover and is rotatably connected to the gate plate, and also includes a pressure taking pipe and a sensor, wherein two pressure taking pipes are symmetrically arranged in the gate plate, the sensor is fixedly arranged on the valve cover, the port of the pressure taking pipe located in the valve cover is arranged corresponding to the interface of the sensor, and the gate plate can operably drive the interface between the pressure taking pipe and the sensor to be connected.

2. The integrated double-acting gate valve according to claim 1, characterized in that: A quick connector is fixedly provided at the end of the pressure taking tube corresponding to the sensor, and the quick connector can be operably inserted into the interface of the sensor.

3. The integrated double-acting gate valve according to claim 1, characterized in that: An inspection chamber is arranged on the side of the valve body. The inspection chamber and the valve cover are symmetrically arranged on both sides of the valve body. The gate plate can be operably inserted into the inspection chamber.

4. The integrated double-acting gate valve according to claim 3, characterized in that: An orifice plate is fixedly arranged at the bottom of the inspection chamber, the orifice plate passes through the valve seat, the flow hole on the orifice plate is located in the valve body, the flow hole is coaxial with the channel of the valve body, a sliding cavity is opened at the lower end of the gate plate, the orifice plate is inserted into the sliding cavity, and the gate plate and the orifice plate can move relative to each other.

5. The integrated double-acting gate valve according to claim 4, characterized in that: The gate hole of the gate plate is arranged at its lower side, and the flow hole of the orifice plate is arranged at its upper side. When the gate plate is fully opened, the gate hole is coaxial with the channel of the valve body, and the diameter of the flow hole is smaller than the diameter of the gate hole.

6. The integrated double-acting gate valve according to claim 4, characterized in that: The outer wall of the gate plate is provided with a first sealing layer, which is in sealing cooperation with the valve seat, and the inner wall of the sliding cavity is provided with a second sealing layer, which is in sealing cooperation with the orifice plate.

7. The integrated double-acting gate valve according to claim 6, characterized in that: The materials of the first sealing layer and the second sealing layer are rubber or polytetrafluoroethylene.

8. The integrated double-acting gate valve according to claim 1, characterized in that: A filter screen is arranged at the port of the pressure taking pipe located in the valve body.

9. The valve as claimed in claim 1 is characterized in that it also includes a hand wheel, wherein the hand wheel is rotatably disposed on the bracket, and the hand wheel is threadedly connected to the valve stem.

10. A flow measurement system, characterized in that: The integrated double-acting gate valve comprises the one-piece double-acting gate valve according to any one of claims 1 to 9, wherein a clock module and a communication module are arranged in the sensor, and both the clock module and the communication module are electrically connected to the sensor.

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